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[[quoteright:350:[[Film/BatmanReturns http://static.tvtropes.org/pmwiki/pub/images/bad_black_barf.jpg]]]]

->''"There's ''always'' one zombie with black gunk coming out of his mouth. See? There he is. What ''is'' that black gunk? I don't know! No one knows! It's one of the great mysteries of unlife!"''
-->-- '''Minmax''', ''Webcomic/{{Goblins}}''

Maybe you're infected by a [[TheVirus zombie virus]]. Perhaps an alien's made a [[FaceFullOfAlienWingWong home in your intestines]]. Or that demon you were trying to summon got a [[DemonicPossession little too close for comfort]]. Either way, one of the symptoms is Bad Black Barf.

Black Barf, as the name implies, takes the form of a thick black goo that issues from the victim's mouth, which they will cough up frequently in varying amounts. Sometimes it may ooze out from the nose, ears, or even the eyes (or some other, less savory orifices). Color might vary slightly, from dark brown to burgundy, but it's mostly black. In some cases the stuff might even be acidic, poisonous, or just smell really bad.

Besides the obvious gross-out factor of seeing someone puking, the human body doesn't really produce black-colored fluids, and there are very, very few diseases that cause black discharge of any kind, so combining the two informs the audience that anyone with Bad Black Barf is not just sick, but sick with some unearthly, unholy, or just downright ''unnatural'' disease.

See also BlackBlood.



[[folder:Anime & Manga]]
* Both instances where a boar is turned into a demon in ''Anime/PrincessMononoke'', they start to bleed and drool dark purple/black slime. In addition, the Forest Spirit starts releasing massive gobs of toxic black glop that instantly kill everything they touch.
* Noh-Face from ''Anime/SpiritedAway'' starts coughing and drooling black barf (among other things) after being given medicine from Chihiro.

[[folder:Comic Books]]
* ''ComicBook/TheUltimates2015:'' Logos, [[spoiler:the fused form of the maddened Master Order and Lord Chaos]], unleashes a whole ''flood'' of some sort of black fluid coming from its mouth, and eyes, and nose on Galactus, [[spoiler:forcibly turning him back into his Devourer of Worlds form.]]
* In issue #7 of ''ComicBook/BatwomanRebirth'', a pair of human/animal hybrid Colony soldiers vomit black fluid while attacking her.

[[folder:Films -- Live-Action]]
* Wikus from ''Film/District9'' starts coughing up black fluid as a result of [[spoiler:transforming into a Prawn]]; at one point it also seeps from his nose.
* The Penguin from ''Film/BatmanReturns'' discharges black goo from his mouth as he is dying.
* One of the numerous icky signs of demonic possession in the ''Franchise/EvilDead'' films.
* Happens in ''Film/JennifersBody'' when Jennifer is being possessed.
* The zombies in ''Film/RockabillyZombieWeekend'' constantly vomit (and occasionally ''defecate'') a thick black goop, the liquefied remains of their intestines.
* In ''Film/TheUgly'' (New Zealand, 1997), the main character sees ghostly entities with black goo running from their mouths.
* Old black-and-white horror flicks used chocolate syrup as fake blood and other nasty fluids coming out of the mouths of zombies and other monsters.
* ''Film/ThePossessionOfMichaelKing'' has the protagonist vomiting black goo when the demons thwart his suicide attempt via swallowing pills.
* In ''Film/TheBabadook'', Amelia starts vomiting a black liquid when [[spoiler:she expels the Babadook from her body]].
* In ''Film/PiratesOfTheCaribbeanDeadMenTellNoTales'', the ghostly Captain Salazar dribbles black liquid from his mouth while speaking. Given that he still has the ghastly head wound that killed him, it's probably congealed blood.

[[folder:Live-Action TV]]
* ''Series/TheXFiles''. An alien virus called "Black Oil" caused black liquid to come out of the mouth, nose and eyes of its victims.
* In ''Series/TeenWolf'', when Derek is poisoned and dying, he vomits black fluid. Erica, also poisoned, has to be encouraged to heal from it, Derek breaks her arm and squeezes black fluid from her veins explaining he is draining the poison from her body. Vomiting similar-looking black fluid also happens briefly to [[spoiler: Jackson which Derek explains is his body rejecting whatever it is that turns someone into a werewolf after being bitten.]]
* In ''Series/{{Supernatural}}'', black fluid from bodily orifices is usually ectoplasm and is one sign of ghost possession. Black smoke pouring out of the mouth is a sign of the end of a demonic possession.
* In ''Series/{{Helix}}'', this is vomited by those infected with NARVIK-B into the mouths of their victims in order to transmit TheVirus, and is such an integral visual motif that its featured dripping off the "X" in the series TitleCard. Dr. Peter Farragut, the ostensible PatientZero, often has rills of black mucus at the corners of his mouth, to the point where spatters of it mark his trail around the research base where he works, which Major Balleseros attempts to {{exploit|edTrope}} to hunt him through the base's network of {{Air Vent Passageway}}s.
* On ''Series/{{Elementary}}'', a suspect who died in a holding cell at the PD is examined by Watson, who takes one look at the reddish-black drool around the body's mouth and immediately orders the room quarantined due to possible anthrax contamination. The man, a known drug mule, had swallowed a balloon full of weaponized anthrax powder, apparently having been told it was drugs by the would-be terrorist who'd cultured the biological agent.

* Franchise/StarWarsExpandedUniverse:
** Mnggal-Mnggal zombies drool and vomit dark gray goo. Worse, the goo is in fact [[EldritchAbomination Mnggal-Mnggal itself]], and it can go on to infect new victims.
** The zombie virus from the novel ''Death Troopers'' is similar; some people in-universe speculate that it was derived from Mnggal-Mnggal.
* The Torment, and presumably other Children Of The Spider, from the book series Literature/SkulduggeryPleasant are able to vomit inky blackness, which then coalesces itself into hundreds of rat-sized spiders.

[[folder:Music Videos]]
* In the video for Music/MichaelJackson's "Thriller", one of the zombies encountered is slobbering some sort of viscous black fluid from its mouth.

[[folder:Video Games]]
* ''VideoGame/MetalGearSolid4GunsOfThePatriots'': After the boss fight with Laughing Octopus, she proceeds to vomit black fluid till a pool forms around her. It's not clear if this is ink, referencing her codename, or a part of her condition.
* In ''VideoGame/ShadowOfTheColossus'', some kind of black mist wafts from Wander's face every time he kills a Colossus and [[spoiler:its soul enters him]]. It's not [[PlayingWithATrope technically]] vomit since it seems to be gaseous, but the general effect is the same.
* The Unclean One from ''VideoGame/BattleRealms'' uses this as a weapon.
* The Reapers, the first gang that Cole fights in ''VideoGame/InFamous,'' are a mob of goons in [[InTheHood red hoodies]] who move strangely and occasionally vomit black goo (which in no way impedes their ability to shoot you). It turns out that [[spoiler:they used to be innocent civilians who were kidnapped and doused in Sasha's mind-controlling tar.]]
* In ''VideoGame/{{SOMA}}'', all of the [=WAU's=] horrific cyborg creations are covered in thick, black slime, a side-effect of the Structure Gel used to forcibly meld flesh and metal together or bring cybernetics under the control of the mad [=AI=].

[[folder:Web Comics]]
* Khran pukes up black barf in ''Double-U Tea F'' just after purging himself of Skreel's influence. Raike has to clean it up after his siblings make him do it, much to his disgust.
* [[LampshadeHanging Lampshaded]] by Minmax in ''Webcomic/{{Goblins}}'' when confronted with a horde of undead, also providing the [[http://goblinscomic.com/01082013/ page quote.]]
* In ''Webcomic/ClockworkGame'', William Schlumburger is throwing up what is called "Black Vomit"--the final stage of yellow fever (see the Real Life section below).

[[folder:Web Original]]
* Has appeared in various works of Franchise/TheSlenderManMythos, most likely [[FollowTheLeader due to its use in]] ''WebVideo/EverymanHYBRID'', where Vinny has been shown to vomit up a black, ash-like substance when he is in the Slender Man's presence.
* The CreepyPasta ''Morbus.avi'' deals with an infection that makes people vomit a substance that looks like old motor oil and tastes like rotten meat. They are [[spoiler: rounded up and [[TheyWouldCutYouUp vivisected]] by {{Plague Doctor}}s]].

[[folder:Western Animation]]
* In the ''WesternAnimation/SouthPark'' episode "Tsst!", Cartman vomits black goo when [[OOCIsSeriousBusiness he actually starts to listen to his conscience]].

[[folder:Real Life]]
* Some fungal infections of the respiratory tract, such as pneumonia or sinusitis, can cause one to cough up black mucus. Frequent smoking or inhaling polluted air can do the same.
* The Inky Cap mushroom, so named because it quickly disintegrates into a black ooze shortly after releasing its spores.
* One of the signs of major upper gastrointestinal bleeding is "coffee-ground emesis," so named because blood that has been digested in the stomach looks dark brown-black and granular, just like spent coffee grounds, when it's vomited back up. Yellow fever, viral hemorrhagic fevers such as hantavirus and Ebola, and severe upper gastrointestinal damage from long-term alcohol, drug and/or painkiller abuse can all cause this sort of thing to occur. This association explains why "yellow fever" (named in English for its association with liver failure) is known as ''vomito negro'' ("[[ExactlyWhatItSaysOnTheTin black vomit]]" in Spanish). Any way you slice it, it's a bad symptom to have; depending on the cause, morbidity and mortality associated with hematemesis runs anywhere from 11-90%.
* A benign example: Bismuth subsalicylate (better known as Pepto-Bismol) can sometimes cause a person's saliva, tongue, or stool to turn black when the bismuth reacts with the tiny amounts of sulfur naturally found in the mouth and GI tract. The reaction is unsightly, but harmless, and usually goes away on its own.