[[quoteright:330:[[Webcomic/TheNonAdventuresOfWonderella http://static.tvtropes.org/pmwiki/pub/images/wonderella_octopus_from_mouth.png]]]]
[[caption-width-right:330:Using this trope as a weapon.]]

A variation of BodyHorror, where a creature is inside someone else, and then leaves through an established opening of the body (as in naturally, not a cut or piercing), even if it's not really an opening (like the navel). It could be the mouth, the nostrils, the ear, or through orifices below the belt. Pores could even count. The point is that the orifice is pretty much intact when the creature leaves.

Sometimes this can kill the "host", sometimes the host lives, or sometimes the host can already be dead.

Sometimes this can be horrific, but sometimes not. It depends on the nature of the evacuation. As the picture shows, it can even be PlayedForLaughs.

Compare ChestBurster (when the creature makes its own orifice to leave, or mutilates an orifice to get out), GivingUpTheGhost.

Contrast OrificeInvasion, FaceFullOfAlienWingWong.



[[folder:Anime & Manga]]
* A small devil leaves through a guy's mouth in an episode of ''Manga/YuYuHakusho''. Strangely enough, TheAbridgedSeries let that moment slide by without a comment.
* In ''{{Naruto}}'' when the tailed beasts are shown being removed from their hosts they exit from their mouth and eyes.
** In the anime Itachi uses a genjutsu that makes the victim feel like a crow is crawling out of their mouth.
** When his body is about to be maimed beyond being able to simply reattach (via snakes... somehow), Orchimaru throws up himself with his clothes undamaged (thank Nicolas Cage), which usually works. He is very fond of this technique.
*** Sasuke also uses this technique to escape being burned alive by Amaterasu, although his clothes [[MrFanservice don't regenerate]].
* Namekians in ''Manga/DragonBall'' are a OneGenderRace of LittleGreenMen (though as adults they tend to be quite tall and don't fly ufos) that give birth to their kin by putting out eggs '''through the mouth'''. It tends to be quite {{Squick}}y to look at, especially since they visibly struggle with it. It's even possible (though not seen) that they can choke to death from it.

* The recent ''[[ComicBook/TeenTitans Titans Annual]]'' #1 has Kid Eternity being wrapped around a computer output input cable kind of combining this with naughty USB inputs, disabling his powers by going down his throat. Or summink.
* In the penultimate StoryArc of ''ComicBook/TheSandman'', "The Kindly Ones", Cluracan spawns [[TheMarvelousDeer the wild Hart]], his nemesis (and a full-grown stag), from his mouth. Its exit leaves him bleeding profusely but he survives.

[[folder:Fairy Tales]]
* A common fairy tale punishment for rudeness and deceit is to have the afflicted spew toads and reptiles from their mouth when they try to speak.
** It's often paired with a good person rewarded by having roses and diamonds come out. Although the reward seems like BlessedWithSuck, since roses and diamonds seem like they would be even ''more'' painful in one's throat then something smooth like a snake.

* A whole ''roomful'' of roaches leave Mr. Pratt's mouth, wounds, and so on in ''Film/{{Creepshow}}''.
* In ''Film/BruceAlmighty'', a gang pushed Bruce around, and he later got revenge by taking the leader's comment about monkeys flying out of his ass literally. And after Bruce sets the other members away, he "returns home"...
* In the movie ''Film/{{Evolution}}'', Dr. Harry Block finds himself the unwilling home of a parasitic alien. It's not shown how it went ''in'', but it was extracted through his ass. Not willingly, either.
* In the second segment in ''Film/TalesFromTheDarksideTheMovie'', a cat kills a hitman (sent to kill that very cat) by [[AttackTheMouth leaping into his mouth]] and crawling all the way inside as the hitman chokes. In the Creator/StephenKing story it was based on, the cat burrows out of the stomach, but in the movie, the cat waits there until morning, and crawls back out of the guy's mouth, just after its real intended victim comes home to witness this (and then has a heart attack).
* In ''Film/ClassOfNukeEmHigh'', Chrissy smokes marijuana tainted by nuclear waste, and discovers later that it caused a [[BalloonBelly rapidly-growing]] mutant creature to take up residence in her stomach--which she quickly vomits up.
* In ''Film/SnakesOnAPlane'', a snake is shown slithering out of a victim's mouth just to drive home the fact that he's dead.
* The Ceti eel crawling out of [[spoiler:Chekov]]'s ear in ''Film/StarTrekIITheWrathOfKhan''.
* A spider crawls out from a corpse's nose in ''Film/{{Arachnophobia}}''.
* In ''Film/PoltergeistIITheOtherSide'', the father swallows an evil-possessed worm from a bottle of tequila, then [[VomitIndiscretionShot barfs it back up]] when it starts growing larger inside him.
* A remarkably silly version in the 1988 film ''Film/{{Uninvited|1988}}'': a mutant cat monster that hides inside a normal cat. It's about the size of a rat when it crawls out of the cat's mouth (although the cat looks like a toy puppet), then grows to about the size of a dog.
* In ''Film/ResidentEvilAfterlife'' [[spoiler: Albert Wesker]] is infested with... something that occasionally peeks out of his mouth. Much like the Plagas from the video games, it has four insectile pincers and would probably take your head off.
* In ''Film/FantasticVoyage'' , the shrunken crew escapes via the patient's tear duct after the sub is destroyed.

* When Ron broke his wand in the second ''Literature/HarryPotter'' book, he tried to make Draco puke out slugs after he insulted Hermione, but it backfired on Ron.
** This scene was gruesomely recreated with loving detail in the second movie adaptation.
** The Death Eaters' symbol, a snake emerging from the mouth of a skull, is a variant of this.
** [[spoiler:In book seven, after hiding inside the digestive tract of Bathilda Bagshot's reanimated corpse, Nagini the snake attacks Harry and Hermione after crawling out the corpse's mouth.]]
* The Yeerks in ''Literature/{{Animorphs}}'' enter through the ear to take control of the host's brain, and leave the same way every three days to feed on Kandrona rays.
** Rachel's burping up of the crocodile in "The Reaction". We aren't told exactly what orifice it came from, but she's definitely intact once it leaves.
* In one of Danish writer Jorn Riel's books, a parasitic worm leaves its host's body through his tear duct. It's not particularly painful or dangerous...at least for the host. Most of the damage is incurred by his mates, who argue about it so much the whole thing ends up in a fist fight.

[[folder:Live Action TV]]
* An episode of ''Series/{{CSI}}'' had a rat leave a body through the mouth. This was the ColdOpen, so it inspired a QuipToBlack by Grissom.
** Another episode had a tapeworm crawl out of a corpse's mouth.
** ''Series/{{Bones}}'' did the same thing with a crab, and averted it with a boa constrictor (which exited via a corpse's torn-open gut instead).
* On ''Series/{{Buffy the Vampire Slayer}}'' Willow's [[BackFromTheDead resurrection]] of Buffy is accompanied by her choking out a large snake, apparently as a trial by Osiris.
* In ''{{Series/Primeval}}'', the parasites crawl out of the mouths of their victims' corpses.
* In the "[[Recap/FringeS01E11Bound Bound]]" episode of ''{{Series/Fringe}}'', a drink is spiked with a genetically altered [[MegaMicrobes cold virus that expands into a giant slug]] (about the size of a rabbit) within the victim's body before exiting via the throat, choking the victim in the process.
* In the ''Series/{{Merlin 2008}}'' episode "The Witchfinder" one of the witnesses [[spoiler: the Witchfinder drugs to make hallucinate]] claims to have seen a sorcerer cough up a toad. Later on, [[spoiler: Merlin makes the Witchfinder cough up a toad.]]
* In a real life incident recounted on ''Monsters Inside Me'', a man who'd gone swimming in a pond in India started getting nosebleeds. Several days later, the leech that was causing them revealed its presence, extending its mouth out of the man's nostril.
* A popular trick for witches in ''Series/{{Supernatural}}''. Always involving {{Squick}}--one witch killed a man by hexing him to ''cough up '''razorblades'''''.
* One of the escaped souls in ''Series/{{Reaper}}'' could do this. While the soul could and did turn entirely into insects, one of the times was prefaced by the soul releasing a swarm of insects from a SkywardScream.
* One of ''Series/TheXFiles'' monsters of the week was a guy with... some sort of... spider creature... implanted inside by ex-Nazi scientists on orders of TheConspiracy. The creature leaned out of the mouth, did the killing, then hid back in.
* In ''Series/FallingSkies'' one of the things the invaders use to attack the survivors is a mass of spiders that seem to be able to infect someone, multiply inside their body and finally tens of them erupt from the victim's mouth. The victim is awake for much of this.

* The music video for Papa Roach's "Between Angels And Insects", in which cockroaches come out of Jacoby Shaddix's mouth when he screams. [[ShockSite Don't search for that scene]].

* This goes all the way back to the Hittite myth called ''Kingship in Heaven''. The god Kumarbi decided to overthrow the sky god Anu, wrestling him and biting off his genitals. This made Kumarbi [[MisterSeahorse pregnant]] with three deities: Teshub (the storm god), Tigris (the river), and Tasmisus. Since he had no actual birth canal, they had to emerge by other means. Teshub came out via "the good place", although [[NoodleImplements it's unstated where that is]].

[[folder:Other Sites]]
* ''Wiki/SCPFoundation'', [[http://scp-wiki.wikidot.com/scp-695 SCP-695 ("Eels")]]. After SCP-695 eggs have grown to juvenile size inside a female human host, they may escape by exiting through her vagina, anus or mouth.

[[folder:Tabletop Games]]
* ''TabletopGame/DungeonsAndDragons'':
** The spell ''Vipergout'' lets its casters do this to themselves on purpose as a weapon, for those problems that can be solved by projectile-vomiting snakes at them.
** The Vasharan worm pod is a gruesome BioAugmentation implant that lets its owner spit deadly parasitic worms.

[[folder:Video Games]]
* The first VideoGame/LegoIsland game. There's an in-game mission where you drive an ambulance around the island, making the occasional stop here and there. Apparently one of them is at the Pizzeria where you see a choking guy who after being helped by paramedics, barfs up a whole live Shark that's bigger than he is, and that shark then barfs up a live dog, and then the dog barfs up a live cat, and so on.
* In a ''VideoGame/{{Tradewinds}} Caravans'' story, the eldest Jasaret daughter's "curse" is to have all manner of frogs, insects, and other small animals constantly flowing from her mouth when it is open. (At least one NPC notices her sneeze out a hawk.)
* In ''VideoGame/AliensVsPredator2010'', Weyland-Yutani is farming aliens in human hosts, using canisters over the hosts' chests to capture the creatures as they emerge. One alien circumvents this trap by emerging through its host's mouth.
* In ''VideoGame/ResidentEvil5'' the Majini are all infested with variant Plagas parasites. Occasionally one of these will emerge from the victim's mouth as a much larger mouth with four pincers that will tear your head off if you let it.
** Ouroboros takes this trope UpToEleven, emerging as a black slime creature from every pore of the victim's body. Then there's what it does to [[spoiler: Excella, which you can [[http://www.youtube.com/watch?v=j77m3hmYYuQ watch here.]]]]
* In ''VideoGame/FiveNightsAtFreddysSisterLocation'' Ennard uses this trope to expel themselves from [[spoiler: Eggs Benedict in a cutscene that plays after finishing the 'Golden Freddy' challenge on Custom Night.]] Fortunately for the player, the cutscene is animated in an 8-bit, Atari-esque style.

[[folder:Web Comics]]
* One of ''[[Webcomic/TheNonAdventuresOfWonderella Wonderella]]'''s powers is to spew a large octopus out of her mouth. The alt text made it clear if this was {{Anime}}, the octopus would be [[RuleThirtyFour forcing its way in]].
* In ''Webcomic/{{Gnoph}}'', a Gnoph symbiote lives inside one of its host's lungs, and can enter and exit using the mouth. The host needs to take hormones to prevent the Gnoph from growing too large to fit comfortably, or else BodyHorror ensues.
* Happens in ''WebComic/SchlockMercenary'', during [[spoiler:General Karl Tagon's backstory]]. A person is used (willingly or unknowingly) as a host for weaponized self-replicating nanorobots as part of an assassination attempt. The person is dies in horrible pain as the nanites activate, but their body appears mostly intact even as they belch out a stream of infectious killer nanites.
** Schlock also winds up spitting up a small patch of himself that was infected by nanites when he "took a sample" of Xinchub's corpse.
* ''Webcomic/{{Oglaf}}'' has one strip where a woman asks her sex partner to "bring out the goddess in [her]". After coitus, the Tapeworm Goddess leaves through her mouth, and offers to grant both of them a wish each for freeing her. The couple then requests BrainBleach:
-->'''Woman:''' I'd like to forget I saw this, please.\\
'''Man:''' Yeah, me too.

[[folder:Western Animation]]
* In ''WesternAnimation/XiaolinShowdown'', Omi escapes from Evil Dojo's body by shrinking himself and escaping through a sweat gland.
* Mr. Slave from ''WesternAnimation/SouthPark'' enjoys forcing small animals to [[OrificeInvasion crawl up his ass.]] Most of these animals die, but one gerbil named Lemmiwinks manages to traverse Mr. Slave's entire digestive system and crawl out his mouth. Later, Creator/ParisHilton has [[MakesJustAsMuchSenseInContext to try escaping the same way]].
* In ''WesternAnimation/{{Futurama}}'', Fry accidentally drinks the emperor of a race of liquid people. Several options are discussed for extracting the emperor, most of which he deems too undignified (although he did like the idea of being squeezed out by a bone-crushing centrifuge). He eventually settles for exiting via Fry's tear ducts.

* Squicky in the extreme, but some internal parasites eventually leave the body this way, either as part of their life cycle or upon the death of their host.
* In 1726, a woman named Mary Toft became (in)famous in England, as she'd reportedly begun giving birth to rabbits. Investigation revealed that she was "birthing" pieces of dead rabbits, which she eventually confessed her husband had purchased; she'd inserted them into her birth canal for later expulsion, in a weird attempt to gain fame and a possible pension from the king.
* It's not unheard of for people with tapeworms to, ahem, ''expel'', in whole or in part, their uninvited guest during a visit to the toilet.