Can Not Tell a Lie: Difference between revisions

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{{worktrope}}
{{quote|'''''"[[Large Ham|I CAN'T LIE!]]"'''''|'''[[Jim Carrey|Fletcher Reed]]''', ''[[Liar Liar]]''}}
|'''[[Jim Carrey|Fletcher Reed]]'''|''[[Liar Liar]]''}}
 
When a character or group of characters is by nature unable to tell any untruths, whether they be magical beings who are [[Tongue-Tied|bound]] by [[Magically-Binding Contract|that magic]], speakers of a [[Language of Truth|language that makes it impossible]], or simply unable to grasp the concept of lying, that character [['''Can Not Tell a Lie]]'''.
 
How restrictive this inability to lie is varies from character to character. For some, they are unable to deceive, following the letter of the law as well as its underlying meaning. For others, they are able to tell [[Jedi Truth|half-truths]] and [[Zeroth Law Rebellion|omit important information]], allowing for [[False Reassurance]] or even [[Malicious Slander]] and acting as a sort of [[Technical Pacifist]] [[Consummate Liar]].
 
Children are prone to it, being [[Children Are Innocent|too innocent]] to think of suppressing the truth -- manytruth—many truths have been blurted out by unwitting children -- butchildren—but this cannot be relied on; most children outgrow it. (Even if they may warn of it by becoming a [[Bad Liar]].)
 
Characters that are temporarily forced to tell the truth, but otherwise can lie are under the effects of [[Truth Serums]]. Characters who are capable of lying, but choose not to [[Will Not Tell a Lie]]. If they're sworn to keep a secret, they will very quickly discover [[Keeping Secrets Sucks]].
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It should be noted that this trope is for characters who Cannot Tell A Lie as a character trait, which means that at all times they are incapable of lying. If the character is under the effect of a [[Truth Serum]], it doesn't count. However, if said [[Truth Serum]] had a permanent effect, especially if it were applied before the main narrative, then that example is valid. Bad writers will use [[From a Certain Point of View]] to get away with "misunderstandings."
 
[[Trope Namer]] is [[George Washington]] from his famous story about a cherry tree, who oddly is a better example of [[Will Not Tell a Lie]].
 
See also [[Knights and Knaves]], [[Language of Truth]]. Not to be confused with [[Bad Liar]].
 
{{examples}}
== Anime &and Manga ==
 
* Belldandy and other Goddesses First Class from ''[[Ah! My Goddess]]''. This is a function of the First Class license, not the goddess in question; {{spoiler|Urd deliberately failed a promotion exam in the manga because she thought it necessary that one of the three sisters be able to lie on occasion}}.
== Anime & Manga ==
* Much of ''[[Death Note (Manga)|Death Note]]'' seems to rely on the idea that one of the rules for the death gods forbids them from lying to the people that hold their books. They are ''not'', however, required to tell the user everything. Ryuk makes a living out of leaving out that last bit of information.
* Belldandy and other Goddesses First Class from ''[[Ah! My Goddess (Manga)|Ah My Goddess]]''.
* Duo Maxwell from ''[[Gundam Wing]]''.{{context}}
* Much of ''[[Death Note (Manga)|Death Note]]'' seems to rely on the idea that one of the rules for the death gods forbids them from lying to the people that hold their books. They are ''not'', however, required to tell the user everything. Ryuk makes a living out of leaving out that last bit of information.
* Duo Maxwell from ''[[Gundam Wing]]''.
* In ''[[Princess Tutu]]'', Mytho doesn't understand much because of [[Heart Trauma|losing his emotions]], including not understanding the concept of lying... at least, until he begins to regain his emotions. The first time in the series he ''does'' tell a lie, Fakir reacts in shock.
* Variation: immortalsImmortals from ''[[Baccano (Light Novel)|Baccano!]]!'' are incapable of using aliases in the presence of other immortals, instinctively blurting out their real names if they try.
* In the ''[[Harukanaru Toki no Naka Dede|Harukanaru Toki no Naka de - Hachiyou Shou]]'' anime, after [[Dark Magical Girl|Ran]] loses her memories, the main characters decide that it will be better if she doesn't remember anything about her connections with the Oni Clan. Yasuaki, for [[The Stoic|certain]] [[Artificial Human|reasons]], fails to understand why they don't tell her everything, to the point of asking directly why they are lying. When he eventually ''does'' tell her the truth in order to figure out how the Oni Clan's curse works, [[Nice Job Breaking It, Hero|all sorts of troubles proceed to happen]].
** The manga explores this even further. Yasuaki, who ''insists'' that he has no heart or emotions, wonders at one point why people tell lies, implying that, indeed, he doesn't understand the concept of lying ([[Younger Than They Look|yet]]). When [[Small Annoying Creature|Kotengu]] gets killed, however, Yasuaki [[Character Development|ends up lying to Akane]] that he is still alive just to make her stop crying. This event confuses him a lot, as he apparently believes that, not being human, he wasn't supposed to be able to lie.
* [[Puella Magi Madoka Magica]] - [[Weasel Mascot|Kyubey]] cannot lie, {{spoiler|as he comes from a purely rational alien species. This does not, however, prevent him from invoking [[Exact Words]] and [[You Didn't Ask]]}}.
** He also did not deem it necessarily to the them everything, becoming genuinely confused when the girls got angry at him for "hiding the truths." He did intently hide some information to keep things in his favor though.
* [[The Heavy| Trueman]] from ''[[Yu-Gi-Oh! GX]]'', sort of. He claims this is the case, which is [[Meaningful Name| how he got his name]] (he named himself, actually), but he does tend to use deceit and dishonesty many times in non-verbal ways, using illusion to prey on victims.
 
== FolkComic LoreBooks ==
 
== Comics ==
* Piffany from ''[[Nodwick]]'' is apparently so naturally pure that she feels constrained to blurt out the truth even when it would be dangerous.
* ''[[The Riddler]]'', [[Depending Onon the Writer]]. A bit of belated backstory says that his father beat him for winning a contest, wrongly thinking he cheated. As a result, Ngyma has an outright compulsion to tell the truth, as expressed through his riddles. In one story he tries not to leave clues, but literally cannot stop himself, and when [[Batman]] catches him Riddler says he needs to go to Arkham because there's something wrong with him.
* In ''Courtney Crumrin and the Night Things'', it's mentioned by the narrator that the Night Things are incapable of lying. Because of this, it tends to not occur to them that ''non''- Night Things can lie to them.
 
== Fan Works ==
* {{spoiler|Achakura}} in ''[[Kyon: Big Damn Hero (Fanfic)|Kyon Big Damn Hero]]'', as Nagato programmed her. She even [[Lampshade Hanging|complains she can't lie about her weakness]].
 
== Fan FictionFilm ==
* The Thermians from ''[[Galaxy Quest (Film)|Galaxy Quest]]'' cannot grasp the concept of lying (or fiction) -- at least at first. [[Big Bad]] Sarris painfully forces them to learn about deception (and storytelling).
* {{spoiler|Achakura}} in ''[[Kyon: Big Damn Hero (Fanfic)|Kyon Big Damn Hero]]'', as Nagato programmed her. She even [[Lampshade Hanging|complains she can't lie about her weakness]].
 
 
== Films -- Live Action ==
* The Thermians from ''[[Galaxy Quest (Film)|Galaxy Quest]]'' cannot grasp the concept of lying (or fiction) -- at least at first. [[Big Bad]] Sarris painfully forces them to learn about deception.
* The main character of ''[[Liar Liar]]'' was made to be unable to tell a lie for one day, to the point where he couldn't speak one, write one, or even ask a question that he knew would be responded to with a lie. Furthermore, he couldn't even conceal the truth by not speaking or telling half-truths, which led to most of the film's humor, especially as the "no lying" thing interfered substantially with his occupation as an [[Amoral Attorney]].
** ''Liar Liar'' is a partial remake of the 1941 [[Bob Hope]] comedy ''Nothing But the Truth'', which by contrast has a [[Will Not Tell a Lie]] plot: Hope's character bets $10,000 (a huge sum in those days) that he can go 24 hours without fibbing.
* Sally in ''[[Practical Magic]]'' finds herself mystically incapable of lying to the detective who has come to investigate the disappearance of Jimmy, whom Sally and her sister had accidentally killed. She avoids confessing by giving a series of clever truthful-but-misleading answers.
* ''[[The Invention of Lying]]'' takes place in a world where no one can lie, except for Ricky Gervais's character.
* In the first ''[[Superman (Filmfilm)|Superman]]'' movie, Supes tells Lois he never lies. [[Clark Kenting|Not once.]]
* Mephistopheles from ''[[Ghost Rider]]''.{{context}}
* Jackson Rippner in ''[[Red Eye (Filmfilm)|Red Eye]]'' never lies. This has led to [[Epileptic Trees|some fans theorizing]] that his joke about killing his parents [[Fridge Horror|was actually true]].
* In ''[[PK]]'', the titular alien is incapable of lie. His species [[Bizarre Alien Biology|communicates via skin contact]] directly transmitting their thoughts, making thoughts difficult to hide or manipulate, and now that he has to use verbal language he hasn't shed the habit of saying exactly what's on his mind. {{Spoiler|By the end of the film, he has learned to lie, as proved to Jaggu when he claimed that the tapes he is bringing back to his planet are recording of Earth sounds, when in truth they are all recordings of her voice. He is so natural and matter of fact while telling that, Jaggu would have believed him if she hasn't listened to the tapes by accident during a moment he was away.}}
 
 
== Literature ==
* Most of [[Isaac Asimov]]'s robots (the earlier ones, at least) cannot knowingly lie. [[Those Two Guys|Greg Powell and Mike Donovan]] mention this explicitly in one story as they try to figure out why their robot's recollection of recent events doesn't match the facts.
** This probably relates to the Second Law, because when a human asks a direct question of a robot, that implies an order to respond truthfully... but smarter robots can deceive, mislead, and keep secrets, primarily when they are trying to uphold the First Law (no harming humans). Robots who are trying to balance conflicted directives may give meaningless answers when questioned ("The matter admits of no explanation"), or simply refuse to answer.
** There is one instance of a robot lying repeatedly. When, by accident, a robot develops telepathic powers, it lies to people when it knows the truth would hurt them (which would mean breaking the First Law). Unfortunately for the bot, humans have so many conflicting emotions, and lying to them can ultimately cause even more harm. Susan Calvin {{spoiler|destroys the robot with a [[Logic Bomb]] after one of its lies indirectly wounded her}}. The title of that story (and [[Title Drop|end words]]) is in fact '''Liar'''.
** There are also several stories where unscrupulous people take advantage of the fact that the Second Law allows you to order a robot to lie. However, this runs into the problem that a rigorous interrogation is in effect a strong order to tell the truth, and any competent roboticist can tell when a robot is straining with conflicting orders (and thus infer that the robot was ordered to lie).
*** The title of that story (and [[Title Drop|end words]]) is in fact '''Liar'''.
* Falcon shapeshifters in Amelia Atwater-Rhodes'sIn ''[[Kiesha'ra]]'' series falcon shapeshifters are able to detect blatant lies very easily through their magic, and so most falcons never blatantly lie to avoid trouble. Falcons, however, are also well-versed in the arts of misleading and half-truths, and being misled is no excuse for wrongdoing.
* Hixabrods in [[Gordon R. Dickson]]'s "Lulungomeena" are completely truthful, making them popular among other races for legal or diplomatic jobs. Any accusation of dishonesty is a deadly insult to a Hixabrod, so it might be an extreme cultural case of [[Will Not Tell a Lie]]. The story was used in a radio show, see further down the page.
* The faeries from Holly Black's ''Tithe'', ''Valiant'', and ''Ironside''. Instead they just "Bend the truth until it snaps under its own weight." i.e, they can't lie per se, but are very, very fond of leaving out important information or "little details" that could be willfully damaging to the hearer. Oh, and let's not forget the clever use of puns employed in the last book.
* Played straight and inverted in ''[[For The Love Of Evil]]''. When he shows interest in courting Orb, Satan reaches an agreement with the other Incarnations. During the courtship, it's inverted --- everything he says must be a lie or a part of a lie. When he wants to propose marriage, however, this is played straight. At that point, everything he says must be the truth.
* In Patricia Briggs's ''[[Mercy Thompson]]'' series, the [[The Fair Folk|fae]] cannot speak an untruth. Which does not mean that they are honest; they often use weasel words such as "I have heard" to deceive without lying. Also, werewolves can smell lies (through things like perspiration and heart rate), and as the protagonist was [[Raised Byby Wolves]] she has great trouble lying even to mundanes, preferring instead to use [[Exact Words]]. In one instance, when John Smith enters the room, another character says "See, I told you Bob Green would come!" implying that John Smith is Bob Green without actually saying it outright.
** Asil uses the same means of [[Loophole Abuse]] in ''Cry Wolf'', when he's compelled to tell the truth by the villain's magic but needs to conceal Bran's identity ("I told you Bran would send Tag...").
* Similarly, the [[The Fair Folk|faeries]] in ''[[The Dresden Files (Literature)|The Dresden Files]]'' are unable to tell a direct lie, but that doesn't stop them from being shifty, misleading SOB's. It's been noted that when dealing with fae, there ''is'' no "spirit of the law," only [[Exact Words|the letter]].
* Due to a cookie-stealing incident as a toddler, Rod Albright of [[Bruce Coville (Creator)|Bruce Coville]]'s ''[[Aliens Ate My Homework]]'' cannot lie when asked a direct question. This leads to a number of instances of [[Cassandra Truth]] once Grakker et al show up, including the titular response to a teacher's asking where his math assignment is.
** [[Subverted]] at the end of the book, though, {{spoiler|when he finally gets a lie out and it's believed... but only because it was a ''believable'' lie, unlike the [[Cassandra Truth|"aliens ate my homework" truth]].}}
* In [[Teresa Edgerton]]'s ''[[Celydonn]]'' books, [[The Wise Prince|Prince Tryffin]] has, as one of his geasa, that he must never knowingly tell a lie. Since breaking a geas brings ''terrible'' bad luck, this makes Tryffin's life interesting.
* Mentats from ''[[Dune]]''. Possibly something to do with their super-perceptive powers.
* Yorick (yes, that [[Alas, Poor Yorick|Yorick]]) in ''The Skull of Truth'' from [[Bruce Coville (Creator)|Bruce Coville]]'s ''[[Magic Shop (Literature)|Magic Shop]]'' series was "blessed" with the inability to lie. This led him to become a jester, the only position in which one could tell the king the truth and get away with it. It was implied this also led to his painful death, after which he became the title skull.
* Christopher Chant from [[Diana Wynne Jones]]' ''[[Chrestomanci]]'' books has this problem when in contact with [[Achilles' Heel|silver]]. Before he discovered what was causing it so that he could just avoid silver he learned to get by with telling the truth, but letting the hearer draw the wrong conclusion. He's also a traveler across dimensions, and one scene features an exchange with a school friend about getting some books for a girl in one of these dimensions. He says (paraphrased): "'I need to get a girl some books as a present. What kind of books do girls like?' When his friend looked at him strangely, he added, 'I have this cousin called Caroline.' It was perfectly true; he wasn't to know that the last sentence had nothing to do with the previous ones." And ''it works''.
* The Aes Sedai from ''[[The Wheel of Time (Literature)|The Wheel of Time]]''. They literally ''cannot'' speak a lie, even when that lie would save millions of lives. This was a magically-created prohibition to make people trust them. Unfortunately, because most Aes Sedai have found ways around the oath by not ''directly'' speaking a lie, but instead using careful phrasing to sneak around the Oath, they have such a reputation for bending the truth that people don't believe anything they say on the basis that they must be [[Literal Genie|Literal Genieing]]ing.
* In James Morrow's ''[[City of Truth]]'', the citizens of Veritas undergo painful conditioning that forces them to always tell the truth, often bluntly; cars have names like the Plymouth Adequate, and the plot is set into motion by something that happens to the protagonist's son at Camp Ditch-the-Kids.
* In [[Terry Pratchett]]'s ''[[Discworld (Literature)/Equal Rites|Equal Rites]]'', there is a short mention of a tribe of people who don't lie, except for their leader/face to the world, who they, as a testament to their honesty, call the Tribe Liar, which other people find slightly uncomfortable to deal with. Esk meets a Liar who is a kindhearted merchant.
* The protagonist of [[William Sleator]]'s ''Others See Us'' cannot lie, at least until he gains telepathy and realizes everyone around him is lying <s>even</s> ''especially'' to themselves.
* The Houyhnhnms in ''[[GulliversGulliver's Travels]]'' have no concept of lying, being enlightened beings. This paves the way for yet more satire, of course.
* In the ''[[Suzumiya Haruhi]]'' novels, Kyon noted on more than one occasion that Yuki wouldn't lie. Who knows if this is [[Will Not Tell a Lie]] or [[Can Not Tell a Lie]], but he is convinced that it is this trope. But she never did tell a lie, after all. At least, she wouldn't lie to Kyon.
** She did lie to Kyon, actually.
{{quote| '''Kyon:''' Nagato, have you seen Asahina-san's contact lens?<br />
'''Yuki:''' I haven't.<br />
'''Kyon:''' ''(internally)'' Nagato replied without flinching. I had a feeling she's lying. }}
:: In a technical sense, Nagato was lying to ‘’Haruhi’’; she was lying to Kyon so she wouldn’t know the truth. When Haruhi’s out of the picture, Nagato comes clean to Kyon.
* In James MacDonald and Debra Doyle's ''[[Circle of Magic]]'' series, if a wizard lies, they permanently lose the ability to do magic.
** The fairies have it even worse. A wizard can go for meaning rather than precise wording, but a fairy must, for instance, carry out all his promises exactly.
* Meursault in ''[[The Stranger]]''. It literally does not occur to him to lie. Interestingly, he's not terribly concerned about other people telling the truth; he never corrects their assumptions about him.
* In James White's ''[[Sector General]]'' novels, the Kelgian species are unable to lie because their fur ripples in such a way that any Kelgian can tell what any other is feeling, which makes lying impossiblepointless for them.
* The troll mirror from ''[[Hans Christian Andersen|The Snow Queen]]'' is incapable of lying but it also cannot reflect the good parts of anything.
* In [[Dan Abnett]]'s ''[[Warhammer 4000040,000]] [[GauntsGaunt's Ghosts]]'' novel ''Blood Pact'', the witch cannot lie. About anything. And foresees the future. And ''babbles'' -- she—she cannot even keep quiet.
* The fey in the ''[[Wicked Lovely]]'' series cannot lie, but they more often than not engage in 'creative truth telling', as per being [[The Fair Folk]].
* In Tamora Pierce's [[Tortall]] books, one cannot lie around Griffins. Even their feathers share some of these properties; Kel uses them to see through illusions.
* In Plaidder's ''Women on Fire'' series, shriia are required to tell the truth at all times; a shriia who tells a lie permanently loses her ability to make magical fire, the signature shriia magical ability.
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* In the ''[[Heralds of Valdemar]]'' series, Tremane has a spell put on him by the Son of the Sun, Solaris, that makes him unable to lie.
 
== Live -Action TV ==
 
* Drogyn on ''[[Angel (TV)|Angel]]'' could not tell a lie. Therefore, he always got upset when people asked him questions. [[Joss Whedon]] said that he had Drogyn not be able to lie so that when he said {{spoiler|Fred cannot be brought back}}, the characters would have to believe him. This comes in useful for Angel's later [[Xanatos Gambit]] where he has his team believe all sorts of lies he has planted like {{spoiler|his involvement in Fred's death}}. Drogyn goes to the characters with information of Angel's betrayal, and they must believe him.
== Live Action TV ==
* ''[[Star Trek (Franchise)|Star Trek]]'':
* Drogyn on ''[[Angel (TV)|Angel]]'' could not tell a lie. Therefore, he always got upset when people asked him questions. [[Joss Whedon]] said that he had Drogyn not be able to lie so that when he said {{spoiler|Fred cannot be brought back}}, the characters would have to believe him. This comes in useful for Angel's later [[Xanatos Gambit]] where he has his team believe all sorts of lies he has planted like {{spoiler|his involvement in Fred's death}}. Drogyn goes to the characters with information of Angel's betrayal, and they must believe him.
** It's said that Vulcans cannot lie, which fans used to attack the morally ambiguous Vulcans in ''[[Star Trek Enterprise (TV)|Star Trek: Enterprise]]''. Of course this ignores the fact that the first time we hear this said is in the [[Star Trek: theThe Original Series (TV)|original series]] episode "The Enterprise Incident", where Spock lies his ears off to the Romulan commander. It's put more realistically in the ''ENT'' episode "Shadows of P'Jem" that Vulcans have "a reputation for honesty".
* ''[[Star Trek (Franchise)|Star Trek]]'':
** It's said that Vulcans cannot lie, which fans used to attack the morally ambiguous Vulcans in ''[[Star Trek Enterprise (TV)|Star Trek Enterprise]]''. Of course this ignores the fact that the first time we hear this said is in the [[Star Trek the Original Series (TV)|original series]] episode "The Enterprise Incident", where Spock lies his ears off to the Romulan commander. It's put more realistically in the ''ENT'' episode "Shadows of P'Jem" that Vulcans have "a reputation for honesty".
** It's more that Spock ''implies'' his ears off, really...
** In an [[Expanded Universe]] novel, it's explained that Vulcans always tell the truth, unless it is more logical to lie. Of course, who decides when it's logical...?
** In her awesome expanded universe novel ''The Romulan Way'', [[Diane Duane]] suggests that a more accurate translation of Vulcan "logic" is "reality-truth" which, like a lot of the things Duane wrote, makes a bit more sense than the official line. Vulcans seem to have a very high estimation of truth and a distaste for untruth, but are willing to play fast and loose with the definition of a lie by proceeding according to the letter of what was said but not the spirit. And of course, they'll lie their butts off if they think it's really necessary.
** According to Spock, "Vulcans never bluff."
** And according to Data, "Androids do not lie." ''That'' one's more likely, since lying is one of those organic behaviors Data is not quite up to speed on. However, he ''does'' commit deception (in a [[Crowning Moment of Awesome]]).
* The sitcom ''[[Roseanne]]'' had one episode when one of Jackie's friends tells her to lie to Roseanne:
{{quote| '''Jackie:''' I can't lie to her.<br />
'''Friend:''' Sure you can.<br />
'''Jackie:''' No, seriously, I can't.<br />
'''Roseanne:''' ''(from the back of the restaurant)'' Jackie, could you come over here for a minute?<br />
'''Jackie:''' I'm busy.<br />
'''Roseanne:''' No, you're not!<br />
'''Jackie:''' You see? }}
* A ''[[Bewitched (TV)|Bewitched]]'' episode has Endora casting a spell on Darrin that renders him incapable of telling anything but the exact truth... which proves problematic for the guy, since he's in advertising and all.
* On ''[[Red Dwarf (TV)|Red Dwarf]]'', Kryten the android starts out like this, but with a lot of coaching and practice, he gets better. Or worse. Whatever.
* Maura Isles from ''[[Rizzoli and Isles]]'' physically cannot tell a lie.
{{quote| '''Jane:''' I thought you said you couldn't lie!<br />
'''Maura:''' What do you mean? I can't!<br />
'''Jane:''' You did.<br />
'''Maura:''' Only ''one'' time, when I said I'd finished my homework and I hadn't, and I immediately went vasovagal. [''clarifies''] Fainted. }}
* Sheldon Cooper from ''[[The Big Bang Theory (TV)|The Big Bang Theory]]'' has great difficulty with lying and must either admit when he's told falsehoods to others or engage in an elaborate covering-up of them.
* In one episode of ''[[Hustle]]'', Ash suffers a head injury resulting in this condition temporarily, right before he's about to close a "deal" with [[The Mark]]. The mark proceeds to ask a direct question, whether there's any reason at all he shouldn't give Ash 500k. He can't tell a lie, but he ''can'' [[Sarcastic Confession|tell the truth sarcastically]].
* In series 6 of ''[[Doctor Who]]'', it's revealed that the Silence want to kill the Doctor because sometime in the future, "on fields of Trenzalore, at the fall of the Eleventh, when no living creature may speak falsely or fail to give answer, a question will be asked. A question that must never, ever be answered." The question? {{spoiler|[[Title Drop|Doctor who]]?}}
* Gary Bell on ''[[Alphas]]'', as a result of having [[High Functioning Autism]] and [[No Social Skills|poor social skills]]. He's been working on it, though.
{{quote| '''Gary:''' I do lie, I've been practicing. It's a social skill. Like the other day when I said I was gonna have a pudding pop, I was lying 'cause I don't like pudding pops. ... That was a lie, I do like pudding pops. I just knew we didn't have any.}}
 
 
== Music ==
* The narrator of "A tongue that cannot lie" by Karine Polwart.
* [[Sir Mix -a -Lot]] cannot lie (nor can other brothers deny) when it comes to his love of a large posterior.
* Invoked by Arlo Guthrie in "[[Alice's Restaurant (Musicmusic)||Alices Restaurant]]", when asked if he knows how a huge mound of garbage including an envelope with his name on it ended up somewhere it shouldn't.
{{quote| And I said, "Yes, sir, Officer Obie, I [[Can Not Tell a Lie]]... [[Blatant Lies|I put that envelope under that garbage]]."}}
 
== Oral Tradition, Folklore, Myths and Legends ==
 
== Mythology ==
* Cassandra was cursed to tell true prophecies which [[Cassandra Truth|nobody would ever believe]], and was driven mad by it.
* Depending on the version, [[The Fair Folk]] can't lie. Some versions also say that the best way to earn their respect is to accept this policy yourself and ''always'' be honest with them. Like say, if you're go into their domain intending to steal from them and are caught, fessing up is the best way to get out alive.
* Depending on the version, [[The Fair Folk]] can't lie.
* The author of Hebrews in [[The Bible (Literature)|The Bible]] states that it is impossible for God to lie. That doesn't mean that God cannot deceive people, though it's usually done to those who are not interested in seeking Him and have no love for the truth that could save them.
 
* [[George Washington]] was said to have remarked, "I cannot tell a lie", and admitting to chopping down his father's cherry tree. However, this is a myth.
** In a ''[[Paperinik New Adventures]]'' short they have fun with this story. It ends up with a time traveler landing on the tree and little George telling his father that he, George, chopped it down rather than trying to explain the truth.
** The Austrian satirist Roda Roda (1872-1945, born Sándor Friedrich Rosenfeld) parodied this in a story "from an American school primer": Young Abraham Lincoln and a playmate together chop down a cherry tree belonging to Lincoln's father. When the father asks them about it, the playmate fingers young Abe, who says: "I cannot tell a lie, father, I did it." - "That is exemplary behaviour, son, I see that you will become President one day." Turning to the other boy the father added: "You, however, who would not admit..." - "Save your breath, Mr. Lincoln, I'm James Buchanan, US President from 1857 to 1861."
 
== Painting ==
* The former trope image, which depicts a scene from the [[English Civil War]], invokes this (though hopefully not playing it straight). A Royalist household (mother with her two daughters and her son) is questioned by Parlamentarian soldiers about the patriarch's whereabouts. The moment presented is the one where the young son of the family is asked "When did you last see your father?" (hence the title). It is in fact [[No Ending|never revealed]] whether he did the most sensible thing (to lie and to save his father's life) or actually [[Can Not Tell a Lie]] and, being [[Children Are Innocent|the very incarnation of innocence]] (he even is [[ColourColor-Coded for Your Convenience]]), tell the truth and blow his father's cover. In the background, his two older two sisters and his mother can be seen anxiously sobbing, making this a [[Tear Jerker]] moment.
 
 
== Radio ==
* An episode of ''X! Minus! One!'' featured a reptilian "lawyer" whose race is incapable of lying (although they don't have to say the entire truth either). This is put to the test when a [[Jerkass]] character tries to get under another character's skin by mocking his home planet, who the latter keeps saying is the most beautiful place in the galaxy. The Jerkass gets the reptilian to admit the other character's planet has been ravaged by an asteroid shower and is hardly the paradise he thought it was, but to his shock the reptilian wholeheartedly agrees that the planet is the best place there is {{spoiler|because the planet is named after the reptilian's word for "home"}}.
** That's an adaptation of [[Gordon R. Dickson]]'s short story "Lulungomeena".
 
 
== Religion ==
* The author of Hebrews in [[The Bible (Literature)|The Bible]] states that it is impossible for God to lie. That doesn't mean that God cannot deceive people, though it's usually done to those who are not interested in seeking Him and have no love for the truth that could save them.
 
 
== Tabletop Games ==
* In ''[[Dungeons and Dragons (Tabletop Game)|Dungeons and& Dragons]]'' some spells that enforce truth. If this troper recalls correctly, the "Zone of Truth" spell prevents anyone in the target area from lying while the spell lasts, but it does not compel people to answer questions. Also, the Ring of Truth allows the wearer to discern lies, but compels to say only truth in turn.
** ''[[Forgotten Realms (Tabletop Game)|Forgotten Realms]]'' NPC [http://forgottenrealms.wikia.com/wiki/Chosen#Chosen_of_Cyric Malik el Sami yn Nasser] suffers from truth-spell cast by goddess of magic personally, so it looks like he's not going to recover any time soon. By the way, he was given a title "Seraph of Lies" soon after that incident.
* An optional Disadvantage in [[GURPS (Tabletop Game)|GURPS]] is "Cannot Lie": any character with this trait is unable to lie, and if they try, they will either "blurt out the truth or stumble so much that the lie is obvious." It does not prevent them from stealing or other unlawful acts (honesty is a separate disadvantage).
* While Seraphs from ''[[In Nomine (Tabletop Game)|In Nomine]]'' '''can''' lie, doing so is very bad for them, and can easily and very quickly lead to them ceasing to be Angels, or at least being loaded down with Discords (the game's version of disadvantages).
** However, the Seraphic dissonance condition only prevents them from knowingly making untrue statements. Seraphs are entirely capable of, and are often past grand masters of, lies by omission and/or revealing half-truths.
* Inverted with the Pooka from ''[[Changeling: The Dreaming (Tabletop Game)|Changeling: The Dreaming]]''; their Frailty is that they can never tell the whole truth. Some players tend to find the perfect mixture of truth and lies, but more than a few tend to rely on, "There is ''not'' a large army of chimera charging down Main Street!"
*** A classic example is from Moe Lane's AU In Nomine material regarding his 'New Crusade' setting -- when Dominic, Seraph Archangel of Judgement, Heaven's internal affairs chief and perhaps the most archetypical Seraph to ever Seraph is asked about what priority he has assigned to his investigation into the AWOL Eli, Mercurian Archangel of Creation and public leader of the New Crusade conspiracy, he replies "The location of, activities of, and eventual resolution of the activities of Eli and the New Crusade are of critical importance to me." This entirely true statement just happens to leave out the ''context'' of Dominic's interest in the New Crusade -- specifically, that Dominic is actually the secret leader of the New Crusade with Eli as his front man.
* The Ebon Dragon from ''[[Exalted (Tabletop Game)|Exalted]]'' is a partial inversion; as the cosmic incarnation of bastardry, he is literally unable to tell the truth... unless, of course, [[Awful Truth|said truth would horribly fuck with whoever hears it]].
* Inverted with the Pooka from ''[[Changeling: The Dreaming (Tabletop Game)|Changeling: The Dreaming]]''; their Frailty is that they can never tell the whole truth. Some players tend to find the perfect mixture of truth and lies, but more than a few tend to rely on, "There is ''not'' a large army of chimera charging down Main Street!"
 
* The Ebon Dragon from ''[[Exalted (Tabletop Game)|Exalted]]'' is a partial inversion; as the cosmic incarnation of bastardry, he is literally unable to tell the truth... unless, of course, [[Awful Truth|said truth would horribly fuck with whoever hears it]].
 
== Video Games ==
* In ''[[Jays Journey|Jay's Journey]]'', the character of Puff (and other dragons like him) can't lie, but he can definitely omit information. When asked by a villain if he's seen Jay, he manages to twist the conversation into making it seem as though he has no idea who Jay is, [[Exact Words|all without lying]]. Specifically, he points out that he's traveling with [[The Ditz|a complete moron]], which is true, while failing to point out that he's traveling with about a dozen ''other'' humans.
* ''[[Knights of the Old Republic]] II'' implies that the droids of ''[[Star Wars]]'' can't lie. It does this by way of a side-quest which involves stealing a Czerka Corporation droid, programming it so it ''can'' lie, and sending it back. [[Hilarity Ensues|It ends about as well as expected.]]
* 343 Guilty spark from ''[[Halo (Video Gameseries)|Halo]]'' might fall into this trope, or he might fall into [[Will Not Tell a Lie]], depending on whether you believe he's gone rampant, or if he's just always been that way. Either way, nothing he ever says is untrue. He will withhold inconvenient facts if nobody asks about them, however.
* The Advisors (the angelic and demonic characters that float around the screen) in ''[[Black and White]]'' are honour-bound to always provide you with truthful information, though both are free to follow their own agenda (getting you to perform good or bad deeds, respectively). It's all there in the manual.
* Oni from ''[[Touhou Project]]'' are said to be incapable of lying, and may be able to instinctively detect when they are being lied to.
{{quote|Always honoring their promises, they can think of no other way to behave than to be fair and square.<br />
There are no youkai who are more honest than the oni.|''Perfect Memento in Strict Sense'', Hieda no Akyu}}
** One of Reimu's [[Informed Ability|Informed Abilities]] is that she does not lie and will most likely respond to any question honestly.
* In ''[[The Lies of P]]'', Pinocchio is the only puppet who ''can'' lie, and in this reimagining of the story, it is more a benefit than it is a hindrance. To give just one example, in the beginning of the game, he has to get into the Hotel Krat, where no puppets are allowed. Because he claims to be human, they assume he's being truthful and let him in.
 
 
== Web Comics ==
* Vashiel from ''[[Misfile (Webcomic)|Misfile]]'', whose unfortunate honesty when asked "[[Does This Make Me Look Fat?]]?" led to what he described as "the most painful day ever".
* Abraham the wizard from ''[[El Goonish Shive (Webcomic)|El Goonish Shive]]'' is sworn to an Oath of Truth. Interestingly, he deliberately avoids people so he won't have to reveal information he doesn't want to.
* ''[[Gunnerkrigg Court (Webcomic)|Gunnerkrigg Court]]'': In Chapter 12, [http://www.gunnerkrigg.com/archive_page.php?comicID=211 robots cannot lie. That is how the robot can tell Antimony is a robot]: [[LogicalCircular FallacyReasoning|she says so.]]
** Reynardine cannot lie when talking with Antimony, who, in a [[Moment of Weakness]], exploits this to force him to confront an [[Awful Truth]] she has angrily revealed to him. He turns the tables on her with ''another'' [[Awful Truth]] in response.
* Quantum Cop of ''[[Casey and Andy (Webcomic)|Casey and Andy]]'' can't lie - although he eventually gains the ability in the final arc as [[Character Development]].
* Durkon, a Lawful Good dwarf in ''[[The Order of the Stick (Webcomic)|The Order of the Stick]]'', is unwilling to lie to lawful enforcers (and he has a low Charisma stat, which in D&D mechanics means that his Bluff roll would suck if he tried), but in jail he tells a [[Half Truth]] to protect his friends.
 
 
== Web Original ==
* ''[[SCP Foundation (Wiki)|SCP Foundation]]'': Victims of [http://scp-wiki.wikidot.com/scp-1082 SCP-1082] are not only unable (and unwilling) to lie -- theylie—they won't even use euphemisms or non-literal language, and write and speak overly verbosely so as to leave absolutely no room for misunderstanding whatsoever.
 
 
== Western Animation ==
* The [[Artificial Human|Polymorphic Clone]] [[Replacement Goldfish|replacing William]] in Season 4 of ''[[Code Lyoko (Animation)|Code Lyoko]]'' was never programmed to lie. He'd respond truthfully to any question asked by anybody, including about his true nature -- althoughnature—although being quite stupid and [[Literal -Minded|literal-minded]], it's probable he'd misinterpret the question. (And while he's aware another William exists, he still responds to William's name, which can get confusing.) This has caused serious troubles for Team Lyoko on a few occasions (like in episodes "A Lack of Goodwill" and "Down to Earth"). This may look like a big oversight coming from [[Teen Genius|Jérémie]], but he has hardly mastered the programming of artificial intelligences yet... and the only code at his disposal that could improve the Clone was the one used by Franz Hopper to create [[Big Bad|XANA]], hence a way-too-big risk to take.
* Franklyn from ''[[Viva Pinata]]'' cannot lie or keep secrets at all, this is played as a running gag in many episodes
* Dr. Wily ''thinks'' that robots Cannot Tell A Lie in the animated ''[[Mega Man (Animationanimation)|Mega Man]]'' series. Rock proves him wrong.
* Mrs. Thompson from ''[[Codename: Kids Next Door]]''. Being unable to lie was a downside of the curse that made her the [[Our Werebeasts Are Different| Were-Dog Queen.]]
 
 
== Folk Lore ==
* [[George Washington]] was said to have remarked, "I cannot tell a lie", and admitting to chopping down his father's cherry tree. However, this is a myth.
** In a Paperinik New Adventures short they have fun with this story. It ends up with a time traveler landing on the tree and little George telling his father that he, George, chopped it down rather than trying to explain the truth.
** The Austrian satirist Roda Roda (1872-1945, born Sándor Friedrich Rosenfeld) parodied this in a story "from an American school primer": Young Abraham Lincoln and a playmate together chop down a cherry tree belonging to Lincoln's father. When the father asks them about it, the playmate fingers young Abe, who says: "I cannot tell a lie, father, I did it." - "That is exemplary behaviour, son, I see that you will become President one day." Turning to the other boy the father added: "You, however, who would not admit..." - "Save your breath, Mr. Lincoln, I'm James Buchanan, US President from 1857 to 1861."
 
 
== Real Life ==
* The famous SOE agent Noor Inayat Khan was taught by her Sufi preacher father never to tell a lie. Needless to say, some of her instructors thought this would cause fatal problems for someone being dropped into Nazi-occupied France as a wireless operator. She appears to have adapted though; Hans Kieffer (head of the Gestapo in Paris) testified after the war that you couldn't believe a word she said under interrogation.
* Many people with autism, [[Asperger's Syndrome]], or the like have a hard time lying to others. Aspergers can impair the capability to think in 'abstract' concepts, and the ability to put oneself in another's shoes, so the concept of deception (which requires the use of abstract thought and imagining what others think to effectively construct a believable lie) is often difficult for someone with Asperger's syndrome to grasp. Of course, it varies on a case-by-case basis; people with mild autism/Aspergers can often lie easily, while those with a more sever version often have to enact significant mental preparations before being able to lie, for making things up on the spot is much harder for then.
* There is a myth that undercover cops, when asked by others if they are a cop, are legally required to tell the truth. This however, is false, as many sting operations would be ruined if the cop was forced to tell the truth about his real job, or if the courts were forced to throw evidence out anytime the criminals were able to prove that they asked if the cop was a real cop, and he lied about it.
 
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