Twin Switch

A popular plot in series where the lead actors are twins, either identical or very close fraternal, is the Two-Timer Date. The advantage in having a twin is, of course, that one can at least try to pull off both dates at the same time. The disadvantage to all this, however, is that the twins in question are usually Different As Night and Day—the wild one must pose as the book learner to successfully fool the boyfriend, or the book learner has to be a party animal to fool their friends.

Since most twins in such series are high school age or younger, An Aesop almost invariably follows. And even though it's almost always the same Aesop every time, rest assured that there will be another Twin Switch not too far in the future. (See Genre Blindness.)

A real-life variant sometimes occurs on April Fools' Day, when twins attending the same school switch classes to play a prank on a teacher. The teacher being pranked, however, often exposes the switch by asking the twin about a test that the other twin took.

One should note that in real life it is likely much less easy for twins to pull this off. They don't always have the same hairstyle, body weight, or voice.

See also Tag-Team Twins for a different type of Twin Switch.

Anime and Manga
"Terriermon: Man, how could he think I was Lopmon?! When I get my hands on him, I'll-- Suzie: Terriermon, momentai!"
 * Ouran High School Host Club, with the Hitachiin twins. The fact that Haruhi could tell them apart (rather easily, so it would seem) is what causes their attraction and respect for her.
 * Turn a Gundam had Dianna Soriel and Kihel Heim periodically switching places. Dianna originally seemed to do it as a practical joke on her attendants (being Queen doesn't give you too many chances to have fun), but it ends up going a bit far when they are separated by a war.
 * Subverted with Kagami and Tsukasa in Lucky Star. On Konata's advice, Kagami temporarily unbinds her hair, while Tsukasa dons her sister's ribbons for her own Girlish Pigtails. Kagami (whose hair is longer to begin with) looks even more mature and...rather pretty. Tsukasa (whose hair is short) just looks even more childish.
 * In the Seinen series Monster, this is played interestingly: we know that a pair of twins were taken.
 * Michio Yuki and his older brother in MW. After the death of, his brother makes an evil grin to the viewers, concluding that it is none other than , and that.
 * The Sonozaki sisters on Higurashi no Naku Koro ni are called "Shmion" for a reason. Their Twin Switches cover all bases from comedic to dramatic, reinforcing the confusion as to who is who when (you eventually find out). They even loved pulling this off in their childhood. Just to make it more complicated,
 * Taken to a an incredibly creepy level with Hansel and Gretel in Black Lagoon.
 * Tragic example in Naruto: After Hiashi Hyuuga killed a ninja(who was a visiting delegate for another hidden village) for trying to kidnap his daughter, Hinata, the ninja's village demanded Hiashi's head in compensation. The clan elders suggested sending Hiashi's twin brother and Neji's father, Hizashi, in his place. Though Hiashi objected, Hizashi agreed as a way to save his brother, prevent a war and choose his own destiny.
 * The manga series Tsubasa Reservoir Chronicle, which is RIFE with Tomato in the Mirror moments, involves at least one classic Twin Switch...of the distinctly unfunny, taking-my-dead-brother's-place type with.
 * The omake-verse includes a lighter variant: during a treasure hunt featuring one of the twins in question and a "friend" of his, there is a black out, and when the lights go back on the twins are swapped. The second twin is later revealed to be the actual prize of the treasure hunt, having gone off to Italy years prior and just now returning in secret to his brother.
 * The  twins accidentally pull one in The Prince of Tennis.
 * The classic 80s shoujo Cipher did this with the main character twins Siva and Cipher. They used to be actors and models together until Siva got a scar on his forehead, and now Cipher does all the modeling and acting work under the name of Siva while Cipher is said to have quit the business. By the way, their actual names are Jack and Roy.
 * Sae and Yumi from Asatte no Houkou occasionally do this.
 * An episode of D.N.Angel has twin sisters Risa and Riku Harada pulling this off, and almost being found out.
 * Happened in a recent manga chapter:
 * In the second Digimon Tamers movie, Henry accidentally grabs his sister's partner Lopmon instead of his own, Terriermon. The latter was not pleased.


 * In Touch, Tatsuya impersonates his brother a few times, once taking his place on the baseball team when Kazuya is injured (as Kazuya is a star pitcher and Tatsuya is not, the idea was never for him to actually play; just to keep their players' morale up and the opposing team intimidated). At least one other time he pretends to be Kazuya to try and pick up girls, only to be scolded by Minami.
 * Mixed with Identical Stranger in Weiss Kreuz.
 * Hideyoshi from Baka to Test to Shoukanjuu. The guy is so girly all he needs to do is swap into a school girl uniform, take off a hairpin, and change his voice a bit and he'll look/act the same way as his twin sister Yuuko.
 * Later in episode 3 of season 2, both Hideyoshi and Yuuka switch places, this time on purpose, and end up making things worse for each other.
 * Though they aren't actually twins, Ui from K-On! pulls this in the  episode of the first series.   Don't worry though-
 * Ui did forget to switch out her, though surprisingly none of the ladies noticed.
 * Taken to an incredibly cruel length with  in Angel Beats!.

Comic Books

 * Vivian and Constance D'Aramis actually faked Constance's death so that one could appear as Justice League Europe member The Crimson Fox, while the other acted as CEO of their family corporation. Since they had identical superpowers, they switched between the roles.
 * Tintin adventure "King Ottokar's Sceptre" where a man's twin brother switches places with him as part of the plot to usurp King Muskar.
 * Played more realistically than most instances of this trope in that the twins weren't much alike; the evil twin had to wear glasses, didn't smoke, and was a lot less absent-minded than his brother, who was near-sighted, smoked like a chimney and kept dropping his butts when he was done with them without noticing.
 * Another non-comedic example: in Detective Comics #374, Robin gets assaulted and Batman deduces that the man is responsible is boxer Jim Condors. However, upon attempting to turn him into the police, Batman is informed that Condors was in the middle of a boxing match when the assault took place. Batman later figures out that Condors had a twin brother and was able to pull a twin switch in order to get revenge on Robin for sending his brother to jail.
 * Batman Black & White featured a story where a woman faked her own death by murdering her twin sister and stealing her identity.
 * In the Blackgate one-shot, part of Cluemaster's Great Escape plan involves one of the Trigger Twins answering to both names during a emergency role-call while the other sneaks away.
 * In the Dutch Donald Duck magazine, Huey, Dewey and Louie once swapped hats to confuse the hell out of everyone, since you can usually identify who's who by their coloured caps.
 * Girls' comic Bunty ran a story in which a vain, arrogant teenage model became disfigured and had her shy twin sister pose as her for modelling jobs until the first twin's face healed.
 * Roderick Kingsley, AKA the Hobgoblin and enemy of Spider-Man, frequently used his twin brother Daniel Kingsley in his criminal schemes. Since Daniel was a whiny, sniveling Dirty Coward, Roderick exploited this to make people think that he too was a pathetic weakling rather than the Magnificent Bastard he really was.
 * In X-Men Noir, made a game of making people think there was only one of them when they were kids. After their father died, they were adopted by different families—but when they met up as adults,  insisted on keeping up the game. If anything you could probably consider this an inversion; they used this trick so their singular identity could be in two places at once.

Fan Works

 * In the Axis Powers Hetalia fic Seven Little Killers, For example, in the hostage scene,   For extra bonus   He only breaks
 * In the Tales of the Abyss fanfic Reflections, tend to do this a lot. it's also a major plot point in parts of the story.

Film

 * The entirety of the plot of The Parent Trap and its many remakes.
 * A major element in, hinted at early on but only revealed at the end.
 * About the B'naii Bagels has the team winning a championship game this way. When Mark's mother, the coach, finds out, she forfeits the game.
 * The Jackie Chan movie Twin Dragons, featuring twin boys who had been Separated at Birth. One is a formal, polite pianist and the other is a rough, street thief who knows how to fight. At one point, they accidentally switched places and another time, they did it on purpose to fool the enemy.
 * Start the Revolution Without Me involves two different mismatched sets of twins getting mixed up with one another.
 * A similar premise was used in the Bette Midler/Lily Tomlin film Big Business, and much earlier in the Laurel and Hardy film Our Relations.
 * In She's the Man (based on Shakespeare's Twelfth Night below), the entire plot is about this.
 * In the Softcore film Video Vixens (about an Adult Film awards show) one of the films is about a serial rapist who turns out to be twins - one twin would go out raping while the other is his alibi, having been seen doing some mundane activity at the same time.

Literature

 * Variation in the Song of the Lioness books: Alanna is to be sent to the convent to receive instruction in the proper behavior of a noblewoman and wants to be a knight; her twin Thom is supposed to go to the palace to be a page, but wants to learn magic (taught at the convent). Instead of switching identities, Alanna dresses as a boy and the two switch destinations.
 * Castor and Pollux from Robert A. Heinlein's The Rolling Stones took each other's places in one semester of high school. Instead of each being burdened with two time-consuming classes, they split it up to each take one class twice. The Aesop occurred in deep space, when the twin who'd taken history instead of advanced math had to spend all his leisure time playing catch-up in that essential spaceman's discipline.
 * The 'one twin dies and the other takes up their life' variant is actually fairly common in mystery novels; a brilliant usage appears for example in Agatha Christie's
 * Slight correction:.
 * However, the Twin Switch plot was used in .
 * Fred and George Weasley in Harry Potter have a habit of trading places or names for a joke in both the books and the movies.
 * In One Hundred Years of Solitude, the twins Aureliano Segundo and Jose Arcadio Segundo swap themselves around constantly during childhood, resisting all attempts to distinguish them, because they find others' dismayed reactions to be amusing. Their family has two traditional male names which are used repeatedly down through generations, each of which comes to imply a different set of personality traits; of course, Jose Arcadio becomes more like an Aureliano (silent, disconnected from reality, embittered, a fighter for lost causes) and vice versa (Aureliano is cheerful, charismatic, generous, an epically Big Eater), until both the audience and the members of their family are led to believe that they swapped permanently at some point. They both seduce the same woman; one ends up keeping her as a concubine. During adulthood, they grow VERY dissimilar, but slowly return to their former state until
 * The Prince and the Pauper, by Mark Twain.
 * In the fifth book of the Anne of Green Gables series, Anne's House of Dreams, the titular Anne meets a woman named Leslie, whose past is a tragic one. To make it worse, her once cruel husband, Dick, is now a helpless, brain-damaged man after coming home from a sea voyage, forcing her to have to take care of him for 11 years. You learn later in the book that he has a cousin named George that he looks exactly the same as, however, because their parents had been two sets of twins who married one another...
 * The book series Double Trouble is all about this trope with twin sisters Sandi and Randi, usually with the switch being imperfect and them being found out. It gets cranked up a notch with the  Triple Trouble books that feature their identical cousin Mandi.
 * Central to the resolution of one of the The Cat Who... mysteries by Lilian Jackson Braun.
 * In The Roman Mysteries, Gauis poses as his twin brother Marcus (who has recently been shipwrecked), in order to convince the bankers who want to foreclose on Marcus's home that Marcus is in good health and should get more time to pay off his loan.
 * In Dido And Pa by Joan Aiken, aristocratic siblings and  swap places so the latter can politely attend a meeting with an adviser while the former hunts wolves. It's never made quite clear whether the two are twins, and even if they were they couldn't be identical. The ruse only works in any case so long as the person they're fooling isn't really paying attention, and  gets into hot water when her disguise is rumbled.
 * from Ranger's Apprentice switches places with his twin in book eight of the series.
 * Invoked in A Tale of Two Cities to get Charles Darnay out of prison. Sydney Carton (not actually his twin but a look alike) forces Charles' accusers to admit they can't identify him since he looks identical to Sydney.

Live Action TV
"Cody: Great! Except he looks nothing like us! *to Sanjay* His plans only work for twins."
 * Sister, Sister far too many times to mention. (In the first few seasons, Tia wore a mole to make her look identical to Tamera, but the mole was off by senior year, and was even talked about.)
 * Funnily enough, the girls have mentioned that this doesn't work for them in real life. They once tried it for laughs (faking the mole with mascara) and all their friends immediately recognized them.
 * Actually Inverted in one episode—both sisters make plans to go out with a boy, who accidentally asked both out thinking that they were the same person. The three-person date was naturally a bit awkward.
 * Subverted in another episode where one of their friends asks Tia why she's coming out of Tamera's classroom, blowing their cover.
 * The Suite Life of Zack and Cody, many times in the earlier episodes. However, they haven't used it as much now that the one twin is clearly thinner and slightly taller than the other one.
 * Lampshaded in one episode, when Zack suggested that one of them should take the place of their middle-eastern friend Sanjay at a ceremony that Sanjay didn't want to attend.

"Patrick: Yeah, it would have been worse if they'd been identical..."
 * Two of a Kind, starring the Olsen twins; they even managed to fool their father, who you'd think would remember that one twin was left-handed and the other wasn't.
 * It's even sillier when the Olsen twins aren't actually identical.
 * Most episodes of The Patty Duke Show, albeit the same actress played both twins with the help of Nerd Glasses and a Scottish Accent.
 * A grisly and totally non-comedic Twin Switch was the basis for an episode of Law and Order Special Victims Unit:
 * Another non-comedic example: A man murders his twin, then takes over his twin's life on Diagnosis: Murder.
 * Parodied in Degrassi Junior High. A girl has to leave her date early, so she has her twin sister take her place half-way through. It's all for nothing, because the boyfriend is too busy hitting on another girl to notice.
 * An episode of Tales from the Crypt has a fake Twin Switch. A man falls in love with a pair of beautiful twins, but they tell him that they promised each other that they'd only marry another set of twins. So he replies "But I do have a twin!", and makes up a story that he and his "twin brother" switch places every month, with one of them staying home and the other going on a business trip. So in this way he can date both twins, by doing a fake Twin Switch with himself at the end of the month. Of course, this being Tales from the Crypt, the twins find out eventually, and solve the problem with a chainsaw.
 * Matthew pulls this on News Radio when his twin brother Andrew came to visit. Trouble is, they didn't look alike, because they really weren't twins. In fact, they weren't even blood brothers; Matthew was adopted but never caught on.
 * In a subversion of Matthew's normal stupidity, at the end of the episode it is revealed Matthew has known all along they weren't twins, but went with it because it is Andrew who was adopted.
 * One of the many things the original CSI makes extremely creepy.
 * An episode of Barney and Friends where the kids discover the girl they've been playing with is in fact two girls. This editor was fooled (the only way to tell them apart was their hair bangles...and I was five at the time).
 * And a season later, Ashley and Alyssa became part of the cast. Interestingly, not all of their episode appearances were together.
 * Dennis the Menace UK where he discovers he has a twin who looks just like him. He uses this to his advantage: have the twin talk to Sergeant Slipper whilst he is catapulting everyone with tomatoes (thus getting him out of trouble because Slipper claims "Dennis" was talking to him), making others around Beanotown think they've gone potty, and at the end the twin ends up doing Dennis's washing up after he sneaks out after tea (he had told his twin to wait outside whilst he went to check the coast was clear).
 * In one episode of Home and Away, Kirsty got Laura to take her place during an exam. Unfortunately for them, Dan had seen everything.
 * These twins from the British Big Brother (not the last, the one before, just to state facts more clearly: 2008) actually did that to their boyfriends. They took the other's boyfriend to the bedroom and indulged in foreplay and fondling and then swapped back and scolded them. So hot yet so wrong.
 * The Australian Big Brother had a set of twins pretend to be one person. One twin would spend some time in the house while the other would be in his own room with books and TV and such. At any time Big Brother felt like, they would swap over, with only a couple of minutes to update each other on what was happening in the house. They managed to keep it up for two or three weeks until one of the twins cut himself in an accident.
 * The American edition did this too with Adria and Natalie. In season 5, Project Do Not Assume, it was assumed that Cowboy and Nakomis were the twist because they turned out to be half-siblings. However; it was then revealed that someone else had a sibling in the house and they were pulling one of these. It was then revealed that to be Adria and Natalie, who switched places in the diary room until the reveal. There was also some brilliance from the crew, because it could have also been Diane or Drew, since they both had a twin sibling outside the house.
 * There's an episode of Coupling in which Patrick relates a story in which he'd been unknowingly dating twins for some time, to the point of near-complete exhaustion.


 * A sinister version of this occurs in the season one finale of The Worst Witch television series, where Miss Cackle's evil twin "Agatha" locks her sister in a cupboard and proceeds to masquerade as her to launch her revenge against Cackle's Academy.
 * Katie and Emily switched in one episode of Skins, so that Emily could sit Katie's exam while she was sat at home moping. All of the teachers were fooled, but none of their fellow students.
 * And Katie later pretended to be Emily to trick Naomi, although that was mostly over the phone.
 * Actually, after watching the show for a while, it becomes almost ridiculously easy to tell them apart. They have subtle but different manerism and dress-senses. It is almost as if they are two different people.
 * An episode of Fringe had characters played by Shawn and Aaron Ashmore pull this one off—one twin presumed dead  while the other assumes his identity for years.
 * This is a variation in that one twin had developed into The Atoner because of his twin's status,
 * Kitchen Nightmares had an episode where twins owned the failing restaurant and the first action upon meeting Gordon Ramsey was for the one up front to shake his hand then go back, get his brother and pretend they were or weren't the same person.
 * Korean drama series You Are Beautiful (and its Japanese remake Ikemen desu ne) is based around a girl taking her twin brother's place as a member of a rock group while he is having surgery abroad.
 * The main plot of Ringer.
 * Also the main plot of The Lying Game.

Music

 * There was one Vocaloid song (well, series of songs) about Rin and Len in a fantasy world, where Rin was an evil princess and Len her servant, since they were separated from each other. Since Rin was doing terrible things and was a tyrant, soon she was overthrown, but before they could get to her, Len forced Rin to flee, while he disguised himself as her, and was punished in her place. Each of the major characters get their own songs with the same melody as the original "Daughter of Evil", except for Len who does the sequel, "Servant of Evil," which tells his side of the story and elaborates on it. And then the last installment was Rin's message of regret, which was basically about how she regrets what happens.
 * The only official song in the series are as follows: Daughter of Evil, Servant of Evil, Regret Message, and Daughter of White. I've also never understood how the Rin/Len switch worked in those songs. Len looks awfully manly for a princess.
 * All songs to the tune of Daughter of Evil except the song itself are fan-made and their storyline has been Jossed.
 * There was another song Monochrome Ward, where it appears that Len was a failed experiment and the doctors wanted to get rid of him. Rin, who was the successful part of the experiment, chooses to switch places with him and died in his place, where Len would live.

Professional Wrestling

 * WWE's Brie Bella debuted by winning matches by disappearing under the ring after she's been beaten up for a while and then "mysteriously reappearing" completely unfatigued to pick up the win. This was revealed to be a ruse with her twin sister Nikki.
 * During his WWE tenure, Kurt Angle was also apt to pull this with his brother Eric. This would often play out with Eric coming out first dressed as Kurt (but not removing the hood from Kurt's entrance warm-up jacket), and when his opponent would go up to approach Eric thinking it to be Kurt, it would cue an ambush from the correct Angle brother.
 * In TNA, Kurt would do this trick with Mixed Martial Arts fighter Frank Trigg, who looks similar to him.
 * The Dudley Boyz did a complete parody of this with Bubba Ray and Devon doing the switch in the middle of matches while the then commissioner Paul Heyman claimed he couldn't tell the difference. Aside from at least a 50 pound difference, one is black and the other is white.
 * The Basham Brothers did this all the time too.
 * Parodied in a tag match involving The Bella Twins mentioned above against Jillian Hall and Maryse. Jillian tried to pull the switch swapping places with Maryse...only to have the ref order her out of the ring. Not only do they not look like twins, they weren't even wearing the same outfits.
 * Irish indie wrestlers Kasey and Leah Owens do this occasionally though Leah has shorter hair and they have different tattoos. If Leah ever shows up wearing hair extensions then you can bet they'll try it. Once it even worked when the two of them were wearing different outfits.

Theater

 * Shakespeare's The Comedy of Errors, involving a set of twins both named Antipholus, and their servants, also twins, both named Dromio. This, in turn, is based on a play by classical Roman playwright Plautus, making this trope Older Than Feudalism.
 * Twelfth Night as well. Viola thinks her twin brother Sebastian has drowned, and disguises herself as him (well, sort of) to go and serve Orsino. So of course things get crazy when Sebastian shows up.

Video Games

 * In Total Overdose, the Good Son is injured in an undercover investigation and in order to salvage the operation, gets the Bad Son sprung from jail to take his place. Different as night and day works in this case, as Ram is far more capable of acting the psychopathic criminal for underworld rep.
 * Siren:
 * In Final Fantasy XII,
 * Tokimeki Memorial 2 and 4 has examples of Twin Switch with Miho and Maho Shirayuki, and Tadashi and Rui Nanakawa. The first set are identical twin sisters with personalities Different As Night and Day, with Maho as the shadow sister, and you'll need to spot the differences in order to know who is who during dates, if you want to score Maho. The second set are brother and sister twins, and the only way to formally get to know Rui and be able to date her is to spot her a few times during her Twin Switch sessions.
 * Pulled off nicely in Nancy Drew Warnings At Waverly Academy with . Because their guardian wasn't able to take care of them, got themselves accepted into a boarding school...but only under one name, so they pulled this on the faculty. And they actually did a very good job at this, since even some of the players were fooled when The Reveal came.  It also turned out well for them because despite that they were expelled, the alumnae said that their scheme was so they could get a good education and should be rewarded, so the faculty paid for their tuition and room and board.
 * In 428 Fuusa sareta Shibuya de better known as the basis/sorta prequel for the anime Canaan,
 * Ami and Mami Futami in The Idolmaster do this as part of their idol career. The only people that know they're actually a pair of twins is the staff of 765 production. Subverted in the second game when Mami grows her hair out and goes solo.

Visual Novels

 * The end of Phoenix Wright: Trials and Tribulations contains a rather complicated example of a Twin Switch. After discovering that is actually  you assume that they were pulling off a Twin Switch as part of  By the end of the case, it turns out that  At the end though, the story drops one more bomb --
 * But wait, that's not all!
 * Done in Clannad with Ryou and Kyou at the end of Kyou's route. Interestingly enough, they're not identical twins and you can tell them apart by looking. Tomoya was pretty stressed by that point, though, so it's hardly surprising.
 * The maid Kohaku pretends to be her twin younger sister Hisui (in a manner which is not at all comedic) a number of times in Tsukihime. Contact lenses help with this, as they have different color eyes—blue for Hisui, gold for Kohaku.
 * In Symphonic Rain

Webcomic

 * In Drowtales, Kel'Noz says that he and his sister Mel'arnach used to do this all the time with a nostalgic smile.
 * In Keychain of Creation, Secret suggests Karen and Marena do the Twin Switch to get Karen with Ten Winds, because Karen is interested in Ten but very poor at romantic interaction, while Marena is awesome at that sort of thing. Marena smacks her upside the head for such a stupid suggestion, since those plotlines never work.
 * Kevin and Kell has Kell and Sheila swapping for kicks when they were kids and later when Sheila covers for Kell while her leg heals. Subverted in that they're cousins.

Western Animation
"Wolf: Say, I wonder if there could've been more than one of that guy... (pan to the hall outside the cell, where a small army of Droopies is standing) Droopies: What do you think, bub?"
 * Both Donald and Douglas, and Bill and Ben on Thomas the Tank Engine have impersonated each other at times.
 * Particularly Egregious on All Grown Up!, where Lil forces her brother to impersonate her for a date she doesn't want to keep.
 * Happened quite often on the original show, where the only way anyone could tell the two apart was Lil's hairbow.
 * Four times the fun with the titular Teenage Mutant Ninja Turtles in the 2003 cartoon, where they all stood in for the same turtle while trying to teach a one-time character named Arnold how to be a ninja.
 * Which doesn't work out as well as you'd think, since in the 2003 series each turtle had a unique skintone and facial features. Arnold even comments that there's something different about them each time.
 * A nasty example on Galaxy Rangers. Jackie Subtract, a Criminal Mastermind in the show's Rogues Gallery had a twin named Aiden. Aiden was a harmless Gadgeteer Genius who wanted nothing to do with his brother's criminal life. Unfortunately, Jackie decides he's going to fake his death by killing his twin and stealing Aiden's identity.
 * This turned out to be the explanation for Droopy's Offscreen Teleportation in Northwest Hounded Police


 * In the Centurions episode "Return of Cassandra", Hot Witch Cassandra Cross' Evil Twin Lilith imprisons her sister and impersonates her as part of one of Doctor Terror's schemes. It's not a perfect impersonation—viewers who saw "That Old Black Magic" will immediately notice that "Cassandra" is acting a bit different and that her magic is red instead of blue.
 * In the Looney Tunes short "Tortoise Beats Hare", Cecil Turtle and nine identical relatives pull this on Bugs Bunny "all through the picture".
 * Gravity Falls:
 * One clever variation occurs in the Duck Tales episode "The Duck in the Iron Mask". After Hewie, Dewey, and Louie are captured by the villain and thrown in the "unwelcome guest room" of the castle, they devise a way for two of them to leave and investigate without arousing suspicion: Dewey sits with his back to the door, and the others place three mirrors in front of him in a way that his reflection is in all three. Thus, when the guard uses the slot on the door to check in on them he is fooled into thinking three of them are there. Not that the guy was all-too smart anyway.

Real Life

 * Television shows have been known to hire twins to play a single child character (like the Olsen Twins on Full House) to get around child labor restrictions and have a backup if one is cranky or sick.
 * All they had to do was charge Reggie while he was in prison. If they charged him while he was there, they could've sent him right back to the cell until his trial.
 * The Manchester United defensive pairing, Fabio and Rafael Da Silva, are pretty much made for this. The only way the team staff and management can tell them apart is the fact that one of them is married, and thus wears a ring - and they have been known to swap it. Presumably with the wife's consent...
 * There was a story where a pair of twins had trouble passing their driving exam when they were teenagers. So, one took the written exam for both of them while the other took the driving test.
 * NHL, the Sedin twins. Read here.
 * Once during the twins' second season, when Henrik was kicked out of a face-off circle, he skated around and went back to take the draw without the linesman being the wiser.
 * Crawford recalls once airing out Henrik between periods for blowing coverage on a face-off. Then the coach stormed into the dressing room, where Daniel stopped him and said he was the one who had erred. Henrik had never said a word.
 * Meet Mr. Raj, a Malaysian man caught smuggling marijuana. The penalty for this in Malaysia is hanging, and they even had DNA evidence to prove Raj did it. Then came in Raj's identical twin brother, and all the pair had to do was accuse the other twin of smuggling the drugs. With no way to distinguish between the two, the police were forced to let them both go.