->'''Thunderstorm:''' Who are you?
->'''Calvin:''' Who are we? Your worst nightmare.
->''{{beat}}''
->'''Socrates:''' Ya know, Calvin, [[DiscreditedTrope that line has been used so many times now, it's not even]] ''[[DiscreditedTrope mildly]]'' [[DiscreditedTrope threatening anymore.]]
->'''Andy:''' [[{{Narm}} Yeah, it actually just took all the drama out.]] It's like having FiveFiveFive for a phone number.
-->-- ''Fanfic/CalvinAndHobbesTheSeries'', [[Recap/CalvinAndHobbesTheSeriesS3TVM2Thunderstorm "Thunderstorm"]]

A common way for a character to announce him/herself in an intimidating manner. It doesn't matter whether he's a good guy or a bad guy, as long as the character is {{Badass}} enough to live up to this claim. That is, unless people are spoofing this line (often by the second character describing his [[RealDreamsAreWeirder actual worst nightmare]]).

It can also be used as a {{Characterization Trope|s}}. In that the person using this stockphrase is a {{Geek}} of sorts, based on the fact that he uses {{Cliche}}s to present himself.

Compare PrepareToDie.

Not to be confused with YourWorstNightmare (which is about actual nightmares).
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!!Examples:

[[foldercontrol]]

[[folder:Anime And Manga]]
* The ''Anime/DragonBallZ'' dub seemed to enjoy characters using this trope. And having its "victims" [[LampshadeHanging point out]] how unintimidating they sounded.
** ''Anime/TheTreeOfMight'' [[TheOceanGroup Ocean Group Dub]]
-->'''Piccolo:''' I think you'd better let the boy go.
-->'''Turles:''' Oh? Is that right? And just who are you?
-->'''Piccolo:''' ImYourWorstNightmare.
-->'''Turles:''' [[SarcasmMode I'm trembling in my boots.]]
** Goku vs Burter and Jeice
-->'''Burter:''' Hi! ImYourWorstNightmare! Burter!
-->'''Goku:''' [[BadassBoast I'm not afraid of dreams]].
*** The final sentence of Goku's I AM speech after he became a Super Sayian to Frieza in the Funimation Dub has this gem.
-->'''Goku: Ally to good, nightmare to you!'''
* ''TransformersCybertron'':
-->'''[[PraetorianGuard Undermine]]:''' Identify yourselves!
-->'''[[BigBad Megatron]]:''' I am Megatron.
-->'''[[TheStarscream Star]][[TropeNamer scream]]:''' And I'm your worst nightmare!
[[/folder]]

[[folder:Comics]]
* Franchise/{{Batman}} often uses this phrase when a criminal asks what he is.
* ''ComicBook/TheSandman'''s Merv Pumpkinhead: "Lady, I'm your worst nightmare. A pumpkin with a gun." Justified, as Merv is a literal nightmare.
** Which is based on the infamous subplot from Steve Gerber's run on ''ComicBook/TheDefenders'': "I'm your worst nightmare. An elf with a gun!"
* Used as a joke in a Frank and Ernest strip where Ernest is being chased by a giant sausage that says: "I'm your WURST nightmare!"
* GreenLantern (Kyle Rayner) to a group of alien invaders in {{JLA}}: "I'm your worst nightmare. A [[AscendedFanboy Manga nut]] with a [[GreenLanternRing power ring!]]"
* Grushko from ''ComicBook/GlobalFrequency'' introduces himself:
--> "Did you ever have a nightmare about a large man who killed your parents, and your siblings, and then your lover, and then everyone you know? [[CrossesTheLineTwice And then burned down your house and destroyed everything precious you've ever conceived of?]] That was me."
[[/folder]]

[[folder:Fan Fic]]
* Examples from Fanfic/{{the Calvinverse}}:
** From ''Fanfic/ThePezDispenserAndTheReignOfTerror'':
--> '''Giant robot:''' ''What in God's name are you? And your friends?''\
-->'''Andy:''' You and your "creator's" worst nightmare.
** Lampshaded and discussed in ''Fanfic/CalvinAndHobbesTheSeries'': Socrates says that the line is not even ''remotely'' threatening [[DeadHorseTrope since it's been so overused]], resulting in the page quote.
[[/folder]]

[[folder:Film]]
* Occurs in ''{{Rambo}} III''.
* ''Film/{{UHF}}'' spoofs the ''Rambo'' films, including this line.
* Parodied in ''Film/LoadedWeapon1'':
-->'''Mr. Jigsaw''': I'm your worst nightmare.
-->'''Jack Colt''': No, [[RealDreamsAreWeirder waking up without my penis is my worst nightmare.]]
-->'''Mr. Jigsaw''': Okay, alright, so I'm not actually your worst nightmare. But I am right up there.
* This is said in ''Disney/{{Mulan}}'' by [[http://www.youtube.com/watch?v=693T6K6igNk Mushu]]. Depending on who you ask, this is either a ''Batman'' reference, or it refers to ''48 Hours'', where Eddie Murphy actually says the quote, making it a self-reference.
* ''Cop and a Half'': "I'm your worst nightmare. An eight year old with a badge."
* ''48 Hours'':
-->'''Eddie Murphy''', in a redneck bar: "I'm your worst nightmare... a nigger with a badge."
* Spoofed in ''CanadianBacon'': The main characters use the line on a Canadian, only for the character to whom they say the line to describe their actual worst nightmare.
* ''Look Who's Talking Too'':
-->'''[[BruceWillis Mikey]]:''' Who are ''you''?\\
'''[[{{Roseanne}} Julie]]:''' I'm your worst nightmare!
* ''TheSantaClause'':
-->'''E.L.F.S. Leader:''' We're your worst nightmare. Elves with attitude.
* In ''[[Series/PowerRangersTurbo Turbo: A Power Rangers Movie]]'', Kimberly does this for the Rangers.
-->'''Kimberly:''' Franchise/PowerRangers, this is Divatox. Divatox, this is your worst nightmare.
* In ''WesternAnimation/TheLorax'', O'Hare warns Ted that if the boy doesn't stop trying to find out about trees, he'll become his worst nightmare. Which, in his view, is Frankenstein's head on a spider's body.
* ''Film/RaisingArizona'': Glenn turns up after getting punched out by H.I, sporting a black eye and a neck brace, and proceeds to blackmail him. He triumphantly states that he's H.I.'s worst nightmare, apparently ignorant of how ridiculous he looks, then ungracefully spits on the sidewalk.
* Hilariously used by Gary Busey in the 80's cheeseball flick ''Bulletproof'':
-->'''Bad Guy:''' ''What the fuck is this?!''
-->'''[=McBain=]:''' ''[[MemeticMutation Your worst nightmare, butthorn!]]''
[[/folder]]

[[folder:Literature]]
* Literature/{{Discworld}}:
** Spoofed in ''Discworld/{{Hogfather}}''. Teatime uses this line on a guard, but his would-be victim wants to know ''which'' nightmare that would be. When it's clarified that he means, "The one where the man appears out of nowhere and kills you stone dead", the guard relaxes and points out that ''that'' nightmare isn't particularly scary. Then Teatime kills him stone dead.
** ''Discworld/GuardsGuards'' has: "Someone out there was going to find out that their worst nightmare was a maddened Librarian. With a badge."
** In ''Discworld/{{Snuff}}'', Vimes makes Stinky the goblin a Special Constable, and Stinky responds to Vimes' quip that someone's worst nightmare is "a goblin with a badge" with "Stinky donít need no badges, fellow po-leess-maan! Stinky worst nightmare all by himself!"
* Sidorio from ''Literature/{{Vampirates}}'' [[BadassBoast describes himself]] as the sort of thing your worst nightmares "[[UpToEleven wake up screaming about]]."
[[/folder]]

[[folder:Live Action TV]]
* Uttered verbatim by Riker while showing off his poker skills in ''Series/StarTrekTheNextGeneration''.
-->'''Geordi:''' [[YouHaveGOTToBeKiddingMe I do not BELIEVE it!]]
-->'''Riker:''' IAmYourWorstNightmare.
* The Titanium Ranger's introduction in ''Series/PowerRangersLightspeedRescue''
** In the ''Series/MightyMorphinPowerRangers'' episode "White Light: Part 2", Kimberly delivers a variation to tiny!Rita as the Rangers re-seal her.
-->'''Rita:''' Oh no, not you again!
-->'''Tommy:''' Afraid so, Rita.
-->'''Kimberly:''' We're like, you're worst nightmare.
* Used for comical effect in an episode of ''[[Series/HermansHead Herman's Head]]'' where Louise (Yeardley Smith, better known as the voice of Lisa Simpson) says it to a tyrannical boss two heads taller than her.
* In the MysteryScienceTheater3000 episode "Teenage Caveman" the bots have a squirrel say this to the title character when he has rather more trouble catching than he should.
* ''TalesFromTheCrypt'': One story has a woman tangling with three {{CIA}} agents. She has killed two of them (not bad for a housewife) and faces the last agent, woman to woman. The housewife tells the agent, "I'm your worst nightmare. I'm a woman with ''balls''!" The agents acts dismissive about it. [[spoiler: The housewife ends up revealing that s/he's the male rogue CIA agent they're looking for. S/he easily kills off the agent]]! She clearly wasn't kidding when she said that!
* BurnNotice: [[PsychoForHire Simon]] is called a "walking nightmare" by several characters as well as the on-screen character designation captions.
* In the miniseries Creator/StephenKing's ''{{IT}}'', Pennywise says to the Losers' Club, "I'm every nightmare you've ever had! I'm your worst dream come true! I'm everything you ever were afraid of!"
[[/folder]]

[[folder:Music]]
* EmilieAutumn's "Gothic Lolita":
-->"I am your sugar, I am your cream, I am your anti-American dream\\
"I am your sugar, I am your cream, I am your worst nightmare, now scream!"
[[/folder]]

[[folder:Tabletop Games]]
* The tagline for the [[AlwaysChaoticEvil Dark Eldar]] in ''TabletopGame/{{Warhammer 40000}}'' is "They are not your worst nightmare -- they are your EVERY nightmare!"
[[/folder]]

[[folder:Video Games]]
* One of Anders' battle cries in ''VideoGame/DragonAgeII''.
* Cyan from ''FinalFantasyVI'' says this to the captain of the troops attacking his castle, and then [[CurbStompBattle defeats him in about two/three turns]].
--> ''"I am Cyan, retainer to the king of Doma. I am your worst nightmare..."''
* Lo Wang, the ''ShadowWarrior'', is everybody's worst nightmare, at least according to himself.
* "Welcome to the castle of nightmares! I'm your greatest nightmare!" So says the FinalBoss of ''VideoGame/CastleOfShikigami 3''.
* ''SoulSeries'': "I will show you the greatest nightmare!"
* Bruce Irvin's only opening pose in ''{{Tekken}}''.
* In ''Videogame/DynastyWarriors 8'', We have [[{{Adorkable}} Li Dian]], who is the most awkward member of Wei. He makes impromptu FreudianSlip {{Love Confession}}s ([[BiTheWay regardless of]] the PlayerCharacter's sex) as his praise quote if he's an allied officer and the player is performing well. and [[InvokedTrope introduces himself]] with ''"I am Li Dian, your worst nightmare!"'' if you encounter him as an enemy (and you are not playing as [[HeterosexualLifePartners Yue Jin]]).
[[/folder]]

[[folder:Webcomics]]
* [[http://www.brunothebandit.com/d/19990511.html This]] ''BrunoTheBandit'' strip.
* ''{{Goblins}}'': [[http://www.goblinscomic.com/11072005/ "...a goblin with a readied action '''and''' an elevation bonus.]]
* In ''BobAndGeorge'', [[http://www.bobandgeorge.com/archives/000806c Cut Man uses it on Megaman.]]
** Two game parodies later, [[EnsembleDarkhorse Dark Man]] uses a similar line and gets... [[http://www.bobandgeorge.com/archives/020306c mixed results.]]
* In [[http://www.undefined.net/1/0/?strip=37 this]] ''OneOverZero'' strip, a character attempts to intimidate another by using this line, with absolutely no success. Note that the character being threatened is an anthropomorphized and enlarged molecule.
[[/folder]]

[[folder:Web Original]]
* Parodied on ''SFDebris'' where the evil MirrorUniverse Star Fleet captains are arguing. Kirk says this line, leading Picard to shock him by asking if he's going to be raped by a giant spider. Picard is then severely underwhelmed by Kirk's actual intention of shooting him, pointing out that he has to worry about that [[ChronicBackstabbingDisorder all the time]], and that you might as well say slipping in the shower is his worst nightmare.
--> '''Picard:''' [[SarcasmMode Oh no, it's Jim!]] And he's ''slightly miffed''.
[[/folder]]

[[folder:Western Animation]]
* ''WesternAnimation/BatmanTheAnimatedSeries'': Batman replies with this when a terrified criminal asks "Who are you?!" in [[http://www.youtube.com/watch?v=xDP8zru0FPE episode 5, ''Pretty Poison.'']]
* From ''JusticeLeague'', "[[Recap/{{JusticeLeagueS2E5And6OnlyADream}} Only A Dream]]":
-->'''Doctor Destiny:''' I'm your worst nightmare.
-->'''Batman:''' You have no idea what ''my'' nightmares are like.
** The exact same sequence occurs between Payback and Bruce Wayne in ''WesternAnimation/BatmanBeyond''.
* ''WesternAnimation/TheTransformers'' in the episode "War Dawn" when Optimus Prime is built from the wrecked body of Orion Pax, he steps onto the battlefield and quotes "You've caused enough destruction for one day, Megatron!" Megatron retorts with "I haven't even started!" then takes aim and blasts Prime - only for it to [[NoSell glance off]]. He then says in a panic "You! Who are you?!" Optimus responds with "Your worst nightmare!" and promptly inflicts a CurbStompBattle on Megatron's drones. Doubles as a CMOA for Optimus
* ''ThePenguinsOfMadagascar'', "Can't Touch This":
-->'''Randy:''' Is somebody there?\\
'''Skipper:''' Yes, somebody's here. Your worst nightmare!\\
'''Randy:''' A flying coyote with eye laser beams?\\
'''Skipper:''' Huh? No! Four angry penguins.\\
'''Randy:''' Phew! Cause if coyotes ever develop flight and eye laser technology, it's game over, you know?
* Used to comedic effect on KingOfTheHill. [[CrazySurvivalist Conspiracy nut]] Dale Gribble, who has a virtually encyclopedic knowledge of the ins and outs of government bureacracy, intimidates a worker at the Department of Motor Vehicles into providing better service by naming all of the worker's superiors in ascending order, then threatening to call them, using this exact line:
-->''I am your worst nightmare! I have a three-line phone and absolutely nothing at all to do with my time!"''
* ''WesternAnimation/StarWarsTheCloneWars'': Said by Cad Bane to C-3PO in the episode "Evil Plans".
[[/folder]]

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