Up the Real Rabbit Hole

""As I said, O'Neill, ours is the only reality of consequence.""

- Teal'c, Stargate SG-1, "Point of View"

In fiction, especially the Trapped in Another World department, many characters have the curious habit of talking about their world (almost always Present Day Earth) as "the real world". This is justified when the world they're trapped in is a construct, such as a computer simulation or All Just a Dream. It gets far murkier when it's filled with sentient inhabitants.

But even if the Magical Land is a place in and of itself, so many of the classical ones have been used as metaphors for something (for instance, Oz or Wonderland) that there is the faintest impression that this one just may be as well. As such, the "rules" on behavior are different in different worlds. Sure, you might have been fireballing the warlord's goons in that other world right and left, but using those powers on, say, a mugger in "the real world" would be wrong. Of course, this is sometimes justified due to the fact that it would break the Masquerade, but that doesn't cover a moral double standard.

And even if the main characters treat everyone in the other world as people, there's still the stupefying habit of referring to their homeworld as "the real world". This seems like it would be incredibly rude, yet nobody ever calls them on it. Even more bizarre is when the natives themselves start doing it.

A type of Creator Provincialism, one step above Earth Is the Center of the Universe. Compare Expendable Clone, All the Myriad Ways, Welcome to The Real World, The Time Traveller's Dilemma, This Is Reality. Contrast Down the Rabbit Hole.

Anime

 * Digimon has its protagonists refer to "the real world" so much that the commercials started making fun of it. In this case, it was more that "Digital" was a kind of Pure Energy as opposed to Matter, which was referred to as "Real".
 * The very first thing that a Digimon tells the kids in Season One is "You're in the Digi-World". Apparently, Digimon don't think of their own world as the real one.
 * This leads to a rather interesting case of Your Mind Makes It Real near the end of the second arc, when Taichi thinks that the Digital World doesn't have any consequences, and that nothing that was happening was real. So he acts really irresponsibly and almost gets everyone killed until he wises up. This seems to be a reoccurring problem throughout the various continuities.
 * Magic Knight Rayearth has the Magic Knights having a curious discussion about this. They concluded that Magical Land Cephiro was "real enough" and the clincher was that if they died there, they would "die in the real world too".
 * Inuyasha: Kagome has often referred to her present timeline as "The Real World." Thankfully, the others just refer to it as "Kagome's world." Interestingly, nobody ever says "The Past" or "The Future", despite the fact that she got there through pure Time Travel.
 * Subverted in Fushigi Yuugi; when Big Bad Nakago escapes the book-reality most of the series has taken place in and starts trying to conquer the real world, the heroes protest that he cannot do this because he is just a character from a book. Nakago refutes that this only makes it more amusing for him to rule this "world of the gods".
 * In Magical Girl Pretty Sammy, the heroine is finally deciding to do something about her best friend's Parental Abandonment problem, so tries to use her magic to fix the situation. It doesn't work. She's confused until her Animal Sidekick explains magic doesn't work so well against problems in the "real" world. She finally uses her powers to send a letter that her best friend has written to her father but couldn't find the courage to put in the mailbox. This is beginning of the turning point in the entire series.
 * In chapter 251 of Mahou Sensei Negima, Negi refers to "our" world as "the real world" (In the Magic World, it's known as "the old world"). Note that he corrects himself immediately afterwards.
 * Even more notably, when Fate tries to talk Negi out of getting in his way, he emphasizes the idea that Negi's "reality" is our world, and he has no obligation to bother with helping Mundus Magicus because it's "nothing more than a fantasy" to him and the girls that followed him over. Negi very nearly falls for it.
 * Shockingly, there might actually be a good reason for this, as
 * Zegapain subverts this with the "real" world of Maihama Kyo comes from and the After the End world on board the Oceanus.
 * In Fullmetal Alchemist: Conqueror of Shamballa, Edward feels this way about, subverting the trope.
 * Many characters in Bleach call Ichigo's world "The World of the Living." Granted, people from Ichigo's world have to die to go to Soul Society, but considering that there was a conspiracy revolving around who killed Captain Aizen, that in the same conspiracy they were going to execute Rukia, Yumichika ordered for preparations to be made for Ikkaku's funeral procession, etc.
 * There's a bit of Lost in Translation in this one. The Japanese word used for this, "gense" (現世) is commonly translated as this for commodity when dealing with the world of the dead as opposed to that of the living, but "gense" has a more fundamental meaning as "present/real/material world", the last of which would make far more sense given shinigami are spiritual beings, as opposed to the material beings that living humans are.
 * There's a bit of Lost in Translation in this one. The Japanese word used for this, "gense" (現世) is commonly translated as this for commodity when dealing with the world of the dead as opposed to that of the living, but "gense" has a more fundamental meaning as "present/real/material world", the last of which would make far more sense given shinigami are spiritual beings, as opposed to the material beings that living humans are.

Comic Books
""So, Grand Central is a parallel upon which the Roman Empire never fell?" "No, your &%$£-hole world is some freak parallel where it did!""
 * Alan Moore (who also created "Earth-616") takes a playful swipe at this trope in Top Ten:

""The hand. The shadow. My world. Your world." "Naturally, you mean the other way around." "Your world is too thin to cast a shadow.""
 * Inverted in the comic book adaptation of Neil Gaiman's Neverwhere with this exchange between the Marquis de Carabas and Richard Mayhew while trying to explain London Below.


 * In the crossover JLA-Avengers comic, during a dream-state where in The Avengers and the JLA regularly meet up, the heroes argue which Earth is Earth 1.
 * In Infinite Crisis, the Superman of Earth 2 said they allowed the JLA to refer to themselves as Earth 1 out of politeness.
 * In The DCU, the main earth being called New Earth (and the real one) was justified in the fact that it forms the fulcrum/nexus of all the other Earths.
 * In the JLA "Red King" story arc, the villainous Red King has access to six billion alternate Earths (one for every human soul) and they are identical except for his own actions. So he uses these "free second chances" to try every possible course of action, finds out which ones work for him, then obliterates the "failed" realities. In short order, he's become wealthy, influential, and has every super-power imaginable - all at the cost of reducing six billion universes to four. Including killing six billion versions of himself (who didn't count because they were "losers").
 * Grant Morrison wrote a JLA story where a heroic version of Lex Luthor arrives from a Mirror Universe and refers to the main DC world as "Earth 2."

Fanfiction

 * Done rather bizarrely in the case of My Inner Life - the author insists that the story documents a "second life" she leads while she dreams, a life which she insists is "very real" and seems to identify with more than her waking life.

Film

 * Tron has onscreen text at one point saying "Meanwhile in the Real World." In dialog, the world of Users is only called "the Real World" by the Master Control Program, who exists in both worlds.
 * In the Tron: Legacy prequel comic Tron: Betrayal, CLU actually calls Flynn on this, pointing out that while he calls the realm of the users "The Real World"; The Grid is "The Real World" to all programs.
 * Enchanted: After one attempt to locate it, as far as Robert is concerned, Andalasia (a very real if Magical Land) is "fantasy", and This Is Reality. Nobody ever corrects him or acts as if this makes anything but perfect sense.
 * Avatar: At one point, protagonist Jake Sully says "Everything is backwards now, like out there is the true world, and in here is the dream." Sully spends half his time Brain Uploading to an alien body an "avatar" which is just as physically real as his human body, and this alien body exists on the same moon ("out there" is the Pandoran jungles, "in here" a human military base). Therefore, neither "world" is actually less real than the other. The avatar experience does involve the human body entering a stasis, so in that sense, it's a "dream" but the same case could be made the other way around, because the avatar body sleeps when the human one is awake.

Literature

 * One of the ur-Trapped in Another World stories, Alice in Wonderland, was All Just a Dream. Thus, the tyranny of the Queen of Hearts and the pointless executions didn't matter.
 * The Faction Paradox book Dead Romance has an extreme version of this - the main character's world is just a small bottle universe sold to the Time Lords. Upon escaping to the universe "above" (outside the bottle), she begins to realise, that may be yet another bottle universe. So she starts a quest to find the uppermost universe - the true Universe.
 * In The Wizard of Oz movie - one of the major influences on this trope - it turned out that Oz was All Just a Dream of Dorothy's. In the original books, on the other hand, not only is Oz real, but Dorothy moves there to become an immortal princess, and eventually goes back to bring her Auntie Em and Uncle Henry because living in the Dust Bowl sucked.
 * Works both ways in The Chronicles of Narnia: Despite Narnia only being a country in another world, the characters refer to the entire other world as "Narnia" (which actually causes Jill some confusion on her first trip, as Eustace told her he'd been to "Narnia" -- the world, not the country). Earth is "that other place" -- fair, since both "Narnia" and Earth are just two of many, many worlds... none of which are, ultimately, "real." When the characters finally reach Aslan's Country, they discover that it is the only real world; everything else, including the physical world that we know, is just a cheap imitation.
 * In the first Chronicles of Thomas Covenant, Thomas persistently denies that The Land is real (giving him the title of "The Unbeliever", which somehow helps him defeat the Big Bad.
 * In the Discworld books, the Nac Mac Feegle know that there are multiple worlds, and are able to cross the borders. However, they believe themselves to be already dead, for the Discworld seems like paradise (to them). They drink, fight and steal as much as they can to enjoy their afterlives. They don't suspend all morals, but do act as if the Discworld is a disposable "temporary" world.
 * Yeah, but we're given to understand that that's how they would have behaved in their "real" world as well. That's just what Feegles do.
 * Also, Archchancellor Ridcully, while heading out to battle elves (with million-to-one odds), is told that, because of the whole multiverse thing, for every one Ridcully that survives the fight, 999,999 other Ridcully's will die. He responds, "Yes, but I'm not bothered about those other buggers. They can look after themselves."
 * The characters in Everworld refer to Earth as "the real world," although the series at least lampshades it when Senna mocks them about it. For their part, the inhabitants of Everworld refer to this world as "the old world" (lowercased), since Everworld is a colony dimension created by the gods who originally lived in our world.
 * There's a slip-up in book seven where Athena follows this trope, though, despite being a long-time Everworld resident.
 * Robert A. Heinlein's The Number of the Beast has one character use "Earth-Zero" (to refer to the "real world") once. This gets jumped on immediately by his companions, arguing it implies an Earth-Zero-centric multiverse. He says it's just for simplicity, and admits any of the other worlds they're traveling to have just as much claim to being "the real world" as theirs.
 * In Heinlein's The Cat Who Walks Through Walls, the interdimensional police agency uses labels for each dimension based on the first moon landing, that being understood as the "branching point". "Our" universe's designation is "One Small Step".
 * In Roger Zelazny's Book of Amber series, Earth (where the action starts) is just one of the many Shadows cast by Amber, which is supposedly the "real" world. As it turns out, there's an uninhabited Amber that's even realer.
 * Lampshaded and subverted in the German novel Dreizehn (Thirteen). Woosh, a talking bat from another dimension who gets caught in heroine Thirteen's world, complains that she wants to return to the "real" world. Thirteen tells her that this is the real world. Cue reply: "Says who?", leaving Thirteen to sputter a bit.
 * Both averted and somewhat inverted in the Young Wizards series by Diane Duane. While none of inhabitants of all the different universes are treated as more or less morally important than any of the others, some universes are more metaphysically potent than others, and our universe just isn't that important when ranked metaphysically.
 * Averted in the Suzumiya Haruhi novels. In later books, Kyon
 * Averted in Larry Niven's "All the Myriad Ways", set in a world where travellers to parallel universes report worlds where the Cuba War was "a damp squib" (called the Cuban Missile Crisis) and return with different technology such as the stapler.
 * Kinda played with in "Cowboy Angels". One version of America has developed dimension-jumping tech, and makes contact with all the other versions. The first one now refers to itself as "The Real".
 * Played with in the Dark Tower books, where it is first implied that our world is not, in fact, the "real" one. In the real world, Co-op City is in Brooklyn, the, and there's a , among other things. In fact, that's only only partially true - that world is directly stated to be more important than ours, but the real world is All World. Maybe. It's kinda confusing.
 * The Neverending Story, both the book and the movies.
 * There's a moment in Sidhe Devil when the main viewpoint character, Zeb, apologizes to Doc for having taken the attitude that the fair world was "Less real than where I come from." He's changed his view after failing to completely prevent a terrorist attack; a little girl died of her injuries as he was carrying her to a doctor. Now It's Personal.
 * In Brave Story there is the "real world" and the world of Vision. Everyone in Vision easily, and nonchalantly, accepts the seemingly unprovable fact that Vision is created from people's thoughts in the real world, and that their unique Vision, out of infinite others, is the creation of one individual (Wataru). Actually really confusing, since all of Vision was originally created by a Goddess, and it's suggested that the real world was created by the same, and that the two worlds are "like two sides of the same coin." So it's kind of like a semi-maybe-un-subversion?
 * Played with in Flatland, where A. Square assumes that there may be more than three dimensions because of what he's seen on his journey, but the Sphere denies this possibility as emphatically as the Flatlanders refuse to believe in a third.

Live Action TV

 * Related: Holograms in Star Trek are mostly programmed not to realize that they are programs and not to recognize characters referring to the Real World, and will become depressed and/or ticked off if a malfunction results in them becoming aware of this. Which of course it does. Often.
 * In a not-dissimilar way, in Life On Mars, nobody from 1973 ever appeared to take Sam Tyler seriously if he mentioned being back in time, or anything relating to his pre-car-crash existence. In Ashes to Ashes, Alex Drake is quite sure that the whole experience of being in 1981 is a hallucination, and repeatedly says so out loud, but, again, nobody bats an eyelid (or suspects that she's deranged).
 * In Sliders, Earth Prime refers to the original Sliders' homeworld. Inhabitants of the other dimensions don't generally use this name, though.

Real Life

 * In American military slang, the "real world" is used to refer to the Continental U.S. Might have something to do with all the mayhem and fighting they deal with on a regular basis not existing back home.
 * In gamer lingo, RL refers to Real Life, and is used when something outside the game is mentioned or requires attention ("BRB RL"). So far so good. However, some gamers have taken on to use the term to describe different portions of their actual lives, as if one part of their lives is more real than others.
 * This can get especially odd if they refer as "real world" to the non-work, non-school time of their lives, which is often spent playing the aforementioned games.

Tabletop Games

 * A standard trope to appear in the Planescape Dungeons and Dragons setting, among other things. It's practically expected of any clueless prime who wander into Sigil to assume that their home plane is the most central and most important place in all of the Multiverse, and that everyone should know of it and follow their rules and customs. (Conversely, some Sigilians claim the same thing about Sigil - proving that you don't have to be a Prime to be Clueless.)

Video Games

 * In The Legend of Zelda: Link's Awakening, the world of the game turns out to be real enough, since the monsters turn out to be motivated by a desire to not be destroyed. Link decides to Kill'Em All anyway.
 * Eternal Sonata: The entire premise is that the fantasy world in which the game takes place is a figment of Chopin's imagination created on his deathbed, and that the characters and events of the game are allegories for his own life experiences and personality traits. Chopin himself, being a smart guy, quickly figures all this out. But suddenly, No, I didn't understand either, but this is a game that ends with a tête-à-tête between a caterpillar and a snail after all.
 * The plot of Final Fantasy Tactics Advance follows the protagonist's attempts to convince his friends to help him destroy the magical kingdom of Ivalice, which has replaced their ordinary modern-day hometown, also called Ivalice. Basically a textbook example, as he takes for granted that the old Ivalice is the "real" one (though all evidence indicates that it ceased to exist as soon as the new one appeared) and doesn't think twice about mowing down anyone who gets in the way of bringing it back. Lampshaded by a character who tries to convince Marche that this world is just as real as his own, a point which is promptly ignored.
 * Early in Brave Story New Traveler, after the protagonist has wandered into his fantasy land he meets a young girl who says "Travelers only come from the real world". That's a downer.
 * Played with in Touhou. The fantastic beings are aware that their reality is just a phantasm and there's a real world out there. And they're OK with that, taking things and customs that drift from the outside, for example the sport of soccer. However, it's a serious problem with humans: only humans that reject the "real world" can stay in Gensokyo.
 * Cross Edge mentions a number of worlds; including "the Fantasy World, the Demon World, and the Real World." As per this trope, said with a completely straight face from natives.

Webcomics

 * Jump Leads takes the assumption of infinite parallel universes to its extreme conclusion: agents visiting parallel universes need not worry about anything except fulfilling their missions and self-preservation, because "We have, bluntly, universes to burn."
 * In Erfworld, Parson initially believes that it's all a hallucination, and later he notes the various odd parallels between Erfworld and Earth as supporting evidence. Of course, his reluctance to accept Erfworld on its own terms might have something to do with his being stuck in an apparently hopeless situation. Later, the viewpoint is inverted by Wanda's statement, "You didn't wish for this world, Parson Gotti. It wished for you."

Western Animation

 * In The Adventures of Super Mario Bros. 3, not only the Mario Brothers, but the Princess and other characters native to the Mushroom Kingdom, called Earth the "Real World".
 * Captain N: The Game Master had this same phenomenon.
 * Subverted in Futurama. When Dr. Farnsworth's "dimension in a box" experiment ends up creating a gateway into an alternate universe, the inhabitants of both universes instantly proclaim the others to be Evil Twins. After much debate and a rereading of the New Testament, it is decided that no one is evil and the universes are named "Universe 1" and "Universe A". Even stranger, at the end of the episode, the portals are rearranged such that each universe contains a box containing itself.
 * In Cyberchase, the residents of Cyberspace interchangeably refer to Matt, Jackie and Inez's world as either "Earth" or "the real world."
 * In Danny Phantom, Danny and the others talk about the 'real world' and the 'ghost world'. Even some ghosts (who should identify more with the ghost world) refer to the human world as the 'real world'.
 * Fridge Brilliance: Since at least some of the ghosts were once human (maybe) they might still think of that as the "normal" reality.
 * Averted in the Dexter's Laboratory episode "Jeepers, Creepers, Where is Peepers?". Deedee's Not-So-Imaginary Friend Koosalagoopagoop tries to enlist Dexter's aid in saving his home dimension, the Land of Koos, but Dexter initially doesn't care because, as far as he's concerned, the Land of Koos isn't real. It's not until he sees some of the more adorable locals get carried away as the land falls apart that Dexter is moved by their plight.