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[[quoteright:350:[[Film/FreakyFriday http://static.tvtropes.org/pmwiki/pub/images/Freaky_Friday_Flip_1520.png]]]]
[-[[caption-width-right:350:[[BeCarefulWhatYouWishFor "I wish I could switch places with her, for just one day..."]]]]-]

->'''''Body Switch Movie:'''''\\
''The brain of one character somehow finds itself in the body of another. Requires actors to confront an actor's nightmare, i.e., acting as if they were another actor.''
-->-- ''Literature/EbertsGlossaryOfMovieTerms''

The most benign subtrope of BodySnatcher: two or more characters swap bodies (or, equally, swap minds) by some form of magic or AppliedPhlebotinum. Typically, a deeper appreciation of the other's life is attained. Named for [[Film/FreakyFriday a novel and movie]] about a body swap between a mother and her daughter.

To be really convincing, the actors may have to mimic the body language and speech patterns of the actor they are supposed to have switched with - ie, an older person using very modern language and slouching. This is doubly complicated if they are trying to imperfectly pretend they are the other person.

When this plot is done in animation, usually the ''voices'' [[VoicesAreMental also switch]] as narrative cheat to help younger viewers keep track of who's who. More subtly, it's just the eyes. More serious/action-oriented shows might not do this. The Flip often involves characters of different ages, genders, races, or social classes. Another variation is a protagonist and antagonist switching, which usually involves each trying to undermine the other's organization while simultaneously trying to switch back. Alternatively it may lead to a HeelFaceTurn. If one or both of the characters have [[StockSuperpowers superpowers or other special abilities]], they'll [[HowDoIShotWeb have a lot of trouble figuring their new powers out]].

A similar idea, with less learning and more evil, is GrandTheftMe. Compare PersonalitySwap, when the characters' personalities are swapped but their minds stay where they are meant to be. It will often involve similar tropes to transformation stories (such as GenderBender) as this is essentially two of these in one, with the addition of confusion resulting from the transformations being into other known characters.[[note]]TheMirrorShowsYourTrueSelf is sometimes used to reveal the switch.[[/note]]

Nearly an ObligatoryJoke in some genres (as in, bound to happen sooner or later in the series, if it's popular enough).

In the more traditional applications of the trope, [[SlipstreamGenre the reason of the switch is never explained in-universe]]. However, the [[WatsonianVersusDoylist Doylist]] reason for any application is often to force the age-old [[AnAesop moral]]: To better understand others, you must experience life in their shoes.

This is such a prominent trope that [[Wiki/{{Wikipedia}} The Other Wiki]] has [[https://en.wikipedia.org/wiki/Body_swap_appearances_in_media an entire list article]] dedicated to covering all instances of body swapping in media.
!!Example subpages

* FreakyFridayFlip/AnimeAndManga
* FreakyFridayFlip/ComicBooks
* FreakyFridayFlip/FanWorks
* [[FreakyFridayFlip/LiveActionFilms Films Live-Action]]
* FreakyFridayFlip/{{Literature}}
* FreakyFridayFlip/LiveActionTV
* FreakyFridayFlip/VideoGames
* FreakyFridayFlip/{{Webcomics}}
* FreakyFridayFlip/WesternAnimation


* A T-Mobile advert from 2003 shows a woman getting a video message from her husband. The video shows her young daughter activating her science project; a brain switcher, which swaps her older brother's body with the family dog. The dog speaks with the son's voice while the boy lifts his leg to scratch behind his ear. Cue mom {{fainting}}. A very brief scene after this shows the dad playing fetch with the dog in the boy's body.
* From the 2016 UsefulNotes/EuropeanChampionship, Nike's [[https://www.youtube.com/watch?v=scWpXEYZEGk "The Switch"]] deals with this happening between Christiano Ronaldo and an English boy.

[[folder:Audio Plays]]
* The ''AudioPlay/BigFinishDoctorWho'' story, "[[Recap/BigFinishDoctorWho156TheCurseOfDavros The Curse of Davros]]" sees the Sixth Doctor switching bodies with Davros.

[[folder:Films -- Animation]]
* Happens to Donkey and Puss-n-Boots in ''WesternAnimation/ShrekTheThird''.
* In a scrapped scene in ''WesternAnimation/{{Cars}}'', Lightning is given a choice of participating in a race or doing community service. When he picks the community service, he wakes up the next day and finds that his engine (apparently the car equivalent of a brain) has been swapped with a steamroller, much to his horror. Fortunately, this is AllJustADream, but when he wakes up he fearfully changes his mind and decides to do the race instead.

* In Music/JohnnyCash's song [[http://www.youtube.com/watch?v=fS7fSL_E4JU "Chicken in Black"]], Johnny's "body's outlived [his] brain", so he is given the brain of a recently killed bank robber. And Johnny's brain winds up in a chicken. HilarityEnsues.

* The MadScientist's experiment in ''Pinball/StrangeScience'' involves doing this with a teenage girl and a chimpanzee.

[[folder:Tabletop Games]]
* ''TabletopGame/DungeonsAndDragons''
** The [[http://www.dandwiki.com/wiki/SRD:Mind_Switch Mind Switch]] and [[http://www.dandwiki.com/wiki/SRD:True_Mind_Switch True Mind Switch]] spells. While Mind Switch is only semi-permanent, True Mind Switch is completely permanent and can only be undone by another True Mind Switch.
** Before this, 2nd edition had the "Switch Personality" telepathic science from ''The Complete Psionic Handbook''. It allows the psionicist to switch mind with another creature, but any prolonged use is dangerous, as both bodies tend to degrade when inhabited by the wrong mind.
** ''The Complete Book of Necromancers'' also introduced the "Life Force Exchange" spell, which is permanent and can be used on any two creatures (including or not the caster). It is one of two powerful spells allowing aged necromancers to [[GrandTheftMe abandon their old body for a new, younger and stronger one]].
** This is just one condition that the [[ArtifactOfDoom Alchemist's Apparatus]], an evil device found the ''TabletopGame/{{Ravenloft}}'' setting can create. (It can also split one being into two bodies, [[EvilTwin one good and one evil]], or merge two beings into ''one'' body.) The only way to reverse ''any'' of this device's effects is to use it a second time, and using it ''at all'' is incredibly dangerous. (Not only is it prone to blowing up, it tends to drive the victims insane, requiring Ravenloft Powers checks for the user and Madness Checks for the victims. Unfortunately, even when it does blow up, someone always rebuilds it later.)

[[folder:Web Animation]]
* Triggering this trope is just one of many ways to get [[YouAreGrounded grounded]] in Website/GoAnimate "Grounded" videos. For one example, [[https://www.youtube.com/watch?v=NkOvcndsTUU this video]] involves WesternAnimation/{{Caillou}} switching bodies with his mother in an attempt to avoid getting grounded. Unfortunately for Caillou, the switch lasts for all of about 20 seconds before he and his mom switch back, after which [[DiggingYourselfDeeper he is given additional grounding time]] for the swap. VoicesAreMental tends to be in effect whenever this occurs.
* ''WebAnimation/DrHavocsDiary'': Episode 24, appropriately called "Freaky Friday". All thanks to one of Havoc's machines, this happens between Ally and Havoc, and then various other characters as well. Oh, and VoicesAreMental is averted.

[[folder:Web Original]]
* The WebVideo/{{Britanick}} video "A Monologue for Three" ends with a four-way body swap between Brian, Nick, Danny Pudi, and . . . well, you'll just have to watch it.
* There is a web series made by [[ThreeAmigos Three friends from Florida]] called ''WebVideo/FreakyForever''. It can be watched [[http://www.youtube.com/user/osnapitzari here.]]
* In the WebVideo/LoadingReadyRun video [[http://www.youtube.com/watch?v=UGSNu1kNU_U "Brain Transplants Made Easy"]], Paul does this to everyone just to prove a point. This is taken to the hilarious extremes of [[spoiler:Jer]] getting switched with [[spoiler:Dana (a random stranger)]] and [[spoiler:Bill]] getting switched with [[spoiler:Gib (a puppet).]]
* ''Series/{{Noob}}'' has a dungeon that will cause an avatar switch between two players after the first boss gets beaten. Voices don't change despite the fact that it would actually make sense.
* This happens to all the main characters in the TheDevilIsAPartTimer Halloween OVA.
* ''WebVideo/SuperMarioLogan'':
** Used in the episode, "Switching Bodies!". Chef Pee Pee and Bowser Junior both go to bed wishing what it's like to be each other, and then wake up the next morning with their bodies switched. HilarityEnsues, surprisingly. This is soon exploited when Chef Pee Pee-as-Junior tells Junior's friends to take his toys, and Junior-as-Chef Pee Pee angrily gets back at him by telling Bowser to start beating, strangling, insulting and paying him, knowing that Chef Pee Pee will get blamed for saying that.
** Used again in the episode, "Life Is Ruff!". Junior and his pet Chain Chomp, Chompy get hit by [[Franchise/ToyStory Woody's]] truck, and somehow end up in each other's bodies. The entire episode is a WholePlotReference to the 2005 Creator/DisneyChannel Original movie of the same name.
** Used yet again "1 2 Switch Bodies!", wherein [[LightningCanDoAnything a lightning bolt strikes Junior and Jeffy]] while they are playing ''1-2 Switch'' on the UsefulNotes/NintendoSwitch, [[{{Pun}} switching]] their bodies as a result. Near the end of the video, [[spoiler:the exact same thing happens to Chef Pee Pee and Cody]].
* When Body Switching Movies Collide is a skit done by the Website/{{Cracked}} staff. It starts off when [[Series/QuantumLeap Sam Beckett]] Leaped into [[Film/FreakyFriday Ellen Cunningham]]'s mind after she switched bodies with Anna. [[Film/{{Ghost}} Sam Cunningham]], Ellen's dead husband, shows up, explaining how he will possess Sam and have sex with Ellen one last time. Al argues that Sam Cunningham possessing Sam Beckett to have sex with Ellen would result in Anna's body having sex with Helen, who has Anna's mind at the moment. The Ghost Sam leaves in disgust, saying he plans to have sex with someone else. Al reveals that Anna is a [[Film/SpyKids secret agent]] hired for the [[Series/StargateSG1 Stargate project]] in the [[{{Series/Torchwood}} Torchwood Institute]] in Roswell. [[Franchise/TheMatrix Trinity]], who works for the [[Series/{{Millennium}} Millenium Group]], shows up in a [[Series/{{Sliders}} Slider Hole]] and explains that the world is a false reality created by sophisticated computers contained within the mind of [[Film/BeingJohnMalkovich John Horatio Malkovich]]. When Sam Beckett asks Al to Leap him out of this madness, Al can't because [[Creator/DeanStockwell he's ]]actually a [[Series/BattlestarGalactica2003 Cylon]]. It turns out it was all Michael Swaim's dream, and the camera zooms out to reveal that sequence was [[Series/StElsewhere imagined by Michael looking at his snowglobe]].
** [[http://www.cracked.com/blog/so-youve-swapped-bodies-with-your-mortal-enemy/ "So You've Swapped Bodies With Your Mortal Enemy"]] [[ExactlyWhatItSaysOnTheTin which is about a guy finding out he switched bodies with his mortal enemy]].
* ''Machinima/Supermarioglitchy4sSuperMario64Bloopers'' pulls this off accordingly, not once, not twice, but ''three times''.
** "The Switcheroooveralls". Mario, [=SMG4=] and most of the gang switch their color codes in this blooper. Hilarious antics ensue, including a crazy Indian mistaking [=FM54321=] for [=MCGustavo=], and attempting to chase him as revenge for [[ItMakesSenseInContext stealing his toilet]], Luigi, in X's body, becoming friends with a Toad zombie he calls "Brains", and Toad even becoming a rock, forced to spend his time with Bowser after accidentally getting thrown towards his lair.
** The episode "The Swap", where Mario annoys a wizard to the point where he switches his and [=SMG4=]'s bodies as punishment. It doesn't help that [=SMG4=] is applying for a job as a janitor.
** "Mineswap" has this. Mario starts to break a scientist guy's machine as Steve mistakes it for chocolate, leading to the two swapping body shapes; Mario becomes a ''VideoGame/{{Minecraft}}'' model while Steve is a ''VideoGame/SuperMario64'' color code. [[spoiler:This is defied since in the end, [[{{Cliffhanger}} the machine is destroyed and Mario and Steve are still in their opposite body shapes]].]]
* In one episode of ''WebVideo/TheTimeGuys'', Doc Chronos invents a brain-switching device. [[spoiler: [[DefiedTrope Turns out he can only invent time machines]].]]
* In ''WebAnimation/{{Ducktalez}} 3'', Vegeta pulls a Captain Ginyu on Scrooge [=McDuck=]. [[ArtShift Vegeta gets Scrooge's art style and Scrooge gets Vegeta's art style]]. Dewey and Louie immediately wonder why Scrooge looks crappy.

[[folder:Real Life]]
* Scientists have found that by syncing a pair of VR goggles on one person's head with a set of cameras on a mannequin or another person's head, the brain is fooled into believing that they are in the body of the mannequin or the other person. Again, [[http://www.newscientist.com/article/dn16180-swapping-your-body-becomes-a-virtual-reality.html no, seriously.]]