->''"[[LargeHam YOUR MOTHER ATE MY DOG!]]"''
-->-- '''Paquita''', ''Film/{{Braindead}}''

Lightmare Fuel is when NightmareFuel is PlayedForLaughs. It is the perfect combination of the truly scary with the truly funny. This often happens in comedy works, typically BlackComedy, but can just as often occur in horror stories.

A work of this nature will sit around the center of the SlidingScaleOfComedyAndHorror.

A SubTrope of MoodDissonance. Compare FauxHorrific and BloodyHilarious.

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!!Examples:

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[[folder: Anime and Manga ]]

* ''Manga/TheKurosagiCorpseDeliveryService''. Most of the series features a lot of this trope. In the first book, one of their stories features a corpse [[spoiler: made from parts of seven different girls]] who gets vengeance on her killer by telling him a joke. It drives him insane.

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[[folder: Film ]]

* ''Film/{{Ghostbusters}}''. The Librarian scene. In the DVD commentary, Harold Ramis and Ivan Reitman stated that they achieved the perfect balance in that moment of people in the audience during the first screening of both laughing and screaming at the same time.
* ''Film/PeeWeesBigAdventure:'' The encounter with [[BewareOfHitchhikingGhosts Large Marge]].
* ''Film/TwilightZoneTheMovie''. "You wanna see something ''really'' scary?"
* ''Film/AnAmericanWerewolfInLondon'' is seemingly made of this in some parts. Griffin Dunne and David Naughton are laughing it up, joking about the superstitious villagers as they walk along the moonlit road one second, and in the next second Dunne's throat is ripped out on-camera and Naughton is slowly bleeding out from a werewolf bite.
* "[=MacGoogles=] the Scottish Frog" in ''Film/MaxKeeblesBigMove''. He ''is'' genuinely creepy-looking... and yet you won't be able to stop laughing.
* In the "musical comedy" version of ''Film/LittleShopOfHorrors'', we go from laughing to cringing, especially once Seymour starts feeding Audrey II whole human beings.
* ''Film/ShaunOfTheDead:'' Once they finally get refuge in the local pub, they are quickly besieged by zombies. As Shaun and the others try to keep the zombies at bay with a rifle, Shaun's mother admits to Liz (Shaun's ex, although his mother isn't aware of the breakup) that she was bitten by a zombie earlier in the movie, dooming her to death and resurrection. She dies in Shaun's arms as he begs her not to leave him. This is followed by a genuinely tense Mexican standoff over what to do with Shaun's mother - David reckons they have to shoot her, Shaun and Ed are hysterically protective - which is punctuated with some of the movie's funniest dialogue.
* In ''Film/{{Jaws}}'', the scene where Brody is complaining about having to dump chum (chopped up fish and fish blood) into the ocean begins with the line "Slow ahead. I can go slow ahead. Come on down here and chum some of this shit." and ends with the line "We're gonna need a bigger boat", having gone from funny to scary in a nanosecond when the shark abruptly appears.
* In ''Film/{{Sleuth}}'', the story jumps from funny to horrifying within a second. Some scenes you might alternate between smiling and being afraid for the characters' lives several times within one moment. You could even find yourself grinning while thinking "I think something horrible is going to happen any minute".
* The 1989 comedy ''Film/TheBurbs'' on the surface seems to be a wacky "mistaken identity" comedy about three childish protagonists who suspect that their next-door neighbors are a family of serial killers. The protagonists' wives, of course, think they're just being stupid. [[HilarityEnsues Wacky hijinks fill the rest of the movie]], until the protagonists discover that the the trunk of the next-door neighbors' car is filled with decomposed human remains. Because the neighbors really are a family of serial killers.
* There are more than a few moments of this in ''Film/{{Beetlejuice}}''.
* ''Film/{{Gremlins}}''. The little monsters are hilarious... until they start killing people in messy, messy ways...and sometimes still are then.
* ''Film/{{Zombieland}}''. The explanation of Rules #1 ("Cardio") and #2 ("DoubleTap") are accompanied by a visual of people being graphically attacked and killed by zombies. They are hilarious and tragic and scary all at the same time.
** The various "zombie kills" (especially the "Zombie Kill of the Week").
* ''Film/AbbottAndCostelloMeetFrankenstein'', especially the scene involving the AbsurdlyIneffectiveBarricade.
* ''Film/BrainDead'' is a textbook example of this, since the amount of gore and horror is so ludicrous mixed with dumb humor that it's pretty damn funny. A notable example is Lionel finding his mother ate Paquita's dog:
-->'''Paquita''': ''[[LargeHam YOUR MOTHER ATE MY DOG!]]''\\
'''Lionel''': Not all of it...\\
[[BlackComedy [Pan to show blood and bits of dog on the bed] ]]
* Creator/SamRaimi films drift back and forth along the SlidingScaleOfComedyAndHorror, and sometimes folds the scale in half, mashing both ends together. ''Film/TheEvilDead1981'' started with doses of Lightmare, ''Film/EvilDead2'' increased both Horror and Comedy, ''Film/ArmyOfDarkness'' slid to slapstick extreme, the ''Film/DragMeToHell'' snapped to the other extreme but added a few tension-breakers.

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[[folder: Literature ]]

* Any ''Literature/{{Discworld}}'' novel involving the Things From The Dungeon Dimensions, or similar LovecraftLite monstrosities, will make it clear they're a serious and disturbing threat and, at the same time, completely ridiculous, often making the point that a creature seemingly made of the bits left over once everything else was created is probably going to fall over a lot.

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[[folder: Live Action TV ]]

* ''Series/DoctorWho'' has been doing this for longer than most series could dream of. Granted, it ''also'' dishes out plenty of outright {{Comedy}} (all flavours), HamAndCheese and high octane NightmareFuel, as well. Being able to do all of this at once, though? It's an art: which individual writers occasionally get horribly wrong. But, when it goes right, it goes ''very'' right indeed. Creator/DouglasAdams' run is still held up as ''the'' benchmark for getting Lightmare Fuel right, for all it was going on ''before'' he pitched up and has continued since. For just cause, however.
* ''Series/BeingHuman'' constantly whips between wacky sitcom hijinks and extremely gory supernatural horror, which can be more than a little jarring.
* ''Series/AmericanHorrorStoryMurderHouse'' has a moment of this. In one episode, [[PsychoExGirlfriend Hayden]], Ben's former mistress and student, discovers where he lives and threatens to reveal to Ben's pregnant wife that she is [[TheBabyTrap pregnant with her and Ben's love child from the affair]]. When Ben agrees to go someplace with her to discuss the pregnancy, [[PsychoSidekick Harvey]] comes out of the blue and ''[[ShovelStrike hits her dead in the face with a shovel]]''. Upon realizing that she's ''not'' dead, [[DoubleTap he hits her again]].
* Frequently, ''{{Series/Supernatural}}'' dips into this.
* ''RedDwarf'' wouldn't be what it is without its capacity to make you both laugh and shudder. Often at the same time: the Polymorph, anybody? MoreTeethThanTheOsmondFamily... masquerading as a pair of increasingly tight boxers. And, that's just ''one'' instance. If the EndingTheme doesn't convince you after that, nothing will.

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[[folder: Stand Up Comedy ]]

* Creator/EmoPhillips: "They say public speaking is the number-one fear in the country. I would've thought the number-one fear would be being BuriedAlive ... with a severed head. And just before your flashlight's battery dies, the eyes open. [''{{Beat}}''] But no, apparently it's the public speaking thing."

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[[folder: Tabletop Games ]]

* The universe of Warhammer40K is a cruel and unforgiving one, with madmen given power to burn everything they see as heretical, daemons invading worlds through the nightmares of the psychic, where merely surviving to adulthood is an accomplishment... Unless you're the orks, in which case the universe is a permanent excuse to fight, get drunk, shoot impossibly cool guns and drive really fast without caring where you're going. Where other armybooks get lurid descriptions of the slaughter caused by daemonic incursions or waking up tomb worlds, orks get things like defeating daemon princes with a defiant gesture involving a power claw and the daemon's groin, or a Waaagh travelling back in time and (possibly) defeating itself. Orks have it ''made''.

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[[folder: Video Games ]]

* Between {{Shout Out}}s to several horror franchises, the ([[BlackAndBlackMorality rather]] [[SociopathicHero unique]]) [[VillainProtagonist player character's]] [[BloodKnight attitude]], the [[{{Gorn}} game]] [[VideoGameCrueltyPotential mechanics]] [[BloodyHilarious and mood]], ''VideoGame/{{Blood}}'' has ''plenty'' of this to go around.

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[[folder: Web Comics ]]

* ''WebComic/StandStillStaySilent'': This comes packed with hilarious, top-quality character interplay... that just happens to have a threat or two skulking quietly undercover if you [[FridgeHorror pause to think]]. We know for certain the [[SceneryPorn utterly gorgeous scenery]] ''definitely'' has oodles of [[BodyHorror horror]] just waiting to pounce, even while we're up to our eyeballs in such wonderful things as kitties and [[CoolTrain sawblade-trains]], too. And, when you do see the NightmareFuel and frenetic action upfront and in your face, it's timed to knock your socks off, before ducking back undercover. Yup: if this work doesn't count, nothing does.

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[[folder: Web Original ]]

* Quite a few articles from the Wiki/SCPFoundation are simultaneously somewhat scary and ''hilarious''.
** [[http://www.scp-wiki.net/scp-426 SCP-426]]: I am a toaster that can only be spoken of in the first person. My entire article is consequently written in this manner, which leads to a great deal of amusement. However, prolonged exposure to me also has some... ''[[PsychologicalHorror unpleasant]]'' side-effects, leading my previous owners to, be respectively, electrocuted attempting to eat an electrical socket, eating so much bread their stomach exploded, dying of blood loss after attempting [REDACTED] with me, and finally, to suffer from malnutrition after inserting two slices of bread and waiting for them to pop.
** [[http://www.scp-wiki.net/scp-914 SCP-914]]'s experiment log, in between straight-up funny.
--->Input: 1 lb. raw ground beef\\
Setting: Very Fine\\
Output: [DATA EXPUNGED]. Appeared to be [DATA EXPUNGED] ██████████ started mooing ██████████ bitten subject [DATA EXPUNGED] ██████████ escaped into ██████████ screaming ██████████ [DATA EXPUNGED] hungry for [DATA EXPUNGED]. Subject immediately terminated.
** Similarly, [[http://scp-wiki.wikidot.com/scp-447 447]]. It's perfectly safe as long as it doesn't come into contact with dead bodies. It's a good lubricant, salad dressing and improves gasoline efficiency as long as doesn't come into contact with dead bodies. It seems to be entirely benevolent but ''[[NoodleIncident must never come into contact with dead bodies]]''.
** [[http://scp-wiki.wikidot.com/scp-1839 SCP-1839]], a book about fish that causes readers to begin to think they are fish as long as they read it and either hold their breaths while in air, or try to breathe underwater, causing them to drown. Note that this will not happen to you as you are a fish.
** [[http://www.scp-wiki.net/scp-1545 SCP-1545]], a two-person llama suit that causes the wearers to continue playing their characters until their deaths. If the back dies, the front continues to walk around and play the act. If the front dies, the back will keep dancing.
* Website/{{Cracked}} [[http://www.cracked.com/funny-1934-spiders/ would like you to know]] that SpidersAreScary.

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[[folder: Western Animation ]]

* ''WesternAnimation/CourageTheCowardlyDog'' is pretty much ''made'' of this, being a genuinely creepy cartoon that happens to be a comedy.
* Similarly, ''WesternAnimation/TheMarvelousMisadventuresOfFlapjack'' is prone to bouts of some seriously scary imagery that's played entirely for laughs.
** ''WesternAnimation/AdventureTime'' often falls into this. Given that Pendelton Ward works on ''Flapjack'', it was probably inevitable.
* ''WesternAnimation/TheRenAndStimpyShow'' was all about this, at least up until [[Creator/JohnKricfalusi John K.]] was kicked out from it. The episodes produced by Games Animations also stepped in the territory of Nightmare Fuel frequently - however, with these, it was unintentional and more prone to be genuinely horrifying rather than just used for comedic effect.
* ''WesternAnimation/SpongeBobSquarePants'' does this a lot, especially after TheMovie.
* ''WesternAnimation/TheSimpsons''' [[WesternAnimation/TreehouseOfHorror "Treehouse of Horror"]] episodes basically run on this trope.
* In ''WesternAnimation/SouthPark'', pretty much anything that gives the audience NightmareFuel will also end up [[RuleOfFunny making them laugh]] at the same time such as [[TheyKilledKennyAgain Kenny's multiple deaths]], and [[Recap/SouthParkS5E4ScottTenormanMustDie Cartman making Scott Tenorman eat his own parents]].
* ''WesternAnimation/MyLittlePonyFriendshipIsMagic'' is known to use this trope occasionally. If the show's [[NightmareFuel/MyLittlePonyFriendshipIsMagic Nightmare Fuel page]] is anything to go by, it might be overshooting.
* Peri stalking Entree in the ''WesternAnimation/{{Spliced}}'' episode "Stuck Together" is portrayed as this.
* ''WesternAnimation/GravityFalls'' had traces of this in it's first season, and appears to be going full force in its second.

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