%%Do not use spoiler tags AT ALL on this page. Thank you.

[[caption-width-right:350:[[AxCrazy He has sadistic and murderous tendencies,]] [[DisproportionateRetribution and made a guy eat his own parents over $16 (and takes sadistic pleasure in it)!]] [[OhCrap Holy fuck!]]]]
Being a [[LongRunners very long running series]], ''WesternAnimation/SouthPark'' was bound to have some [[NightmareFuel horrors]] that [[WhatDoYouMeanItsNotForKids little children should not see]] (never mind that the show, in America, is rated TV-14(Some episodes rated TV-MA) and makes it explicitly clear with every episode that it shouldn't be watched by anyone who's young, impressionable, or a MoralGuardian).

'''As per NightmareFuel guidelines, all spoilers are unmarked!'''

* Cartman is generally frightening when he shows his psychotic and extremely sadistic behaviour.
** In the episode "Scott Tenorman Must Die", Cartman ground up a kid's parents into chili and tricked the kid into eating them. And, to top it off, sang "Nyah, nyah, nyah, nyah, nyah! I made you eat your parents!"
** That's not to mention that Scott ''liked'' the chili before finding out what was in it.
** "Do you like it? Do you like it, Scott? I call it: Mr. and Mrs. Tenorman chili." The look on his face seals the deal.
---> "Let me taste your tears Scott. Mmmm, your tears are so yummy and sweet!"
** Stan and Kyle put it best...
--> '''Kyle''': Dude, I think it might be best for us to never piss off Cartman again.
--> '''Stan''': Good call.
** A lot of Cartman's angry expressions throughout this episode are a little unsettling.
** While it gets overshadowed, Scott's plan to feed Cartman chili containing ''the pubic hair of every kid in town'' is pretty disgusting too.
** This is more of a FridgeHorror, but certainly qualifies. While Cartman almost always proves somewhat immoral and sociopathic behavior, is somewhat frightening if you think how he will be when he grows up and becomes an adult. If he has made one of the most cruelest acts in a TV series ever done in "Scott Tenorman Must Die", imagine how inhumane he could be as an adult.
*** If you've seen [[FutureLoser the end of "My Future Self 'n' Me"]], [[NightmareRetardant you'll know you have nothing to worry about.]]
** In the Season 15 episode "T.M.I.", in response to [[http://southpark.cc.com/clips/386584/youre-a-fat-little-boy an anger management counselor calling him "fat"]], he whips out his phone, seemingly nonplussed by the insults.
--->'''Counselor''': Huh. Well, I just don't see it, Ms. Cartman. Your son doesn't seem to be triggered by anger at all. In fact, I'd say he's [[HorribleJudgeOfCharacter one of the more even-tempered children I've ever seen]].
*** The counselor is then interrupted by a phone call from his wife, which is then cut off when she ''shoots herself'' due to a "fourteen year old girl" and "an official police record", brought to light by a "Mitch Connors". After this, the counselor stares at Cartman in [[OhCrap dawning realization]], and Cartman just fixes him with a DeathGlare and says "[[TranquilFury I'm not fat.]] [[InsistentTerminology I'm big-boned.]]"
** Several episodes have shown how easy it is for someone like Cartman to legally purchase a gun.
* Ms. Crabtree's character design and abrasive personality sometimes crossed into this territory for the first three seasons, to the point it even, in-universe, scared the living bejesus out of characters like Mr. Garrison, ''Chef,'' and even '''''Cartman!'''''
* The show's unsettling fixation on suicide. It ''really'' makes you wonder about the mental health of [[Creator/TreyParkerAndMattStone the creators]].
** In the episode "Marjorine", the reaction of Butters' parents when they think he's committed suicide, especially his mother's shriek when she sees his "body" hit the ground. It is one of the few times that I've found the show to fully cross over into DudeNotFunny territory.
** The multiple gay suicides at the camp Butters is sent to in "Cartman Sucks" might've been darkly funny when the episode first aired in 2007, but the recent rash of [[RealLife real life]] gay suicides and homophobic hate crimes between 2010 and 2011 really give the episode a darker feel.
* Kenny's deaths. Sure, it is played as a [[TheyKilledKennyAgain run]][[YouBastard ning]] [[DeathIsCheap gag]], but there are quite a few of them not for the faint of heart.
** "Mysterion Rises" makes it even worse combining Nightmare Fuel with FridgeHorror, Kenny states that he is unable to die:
--> '''Kenny''': [[AndIMustScream I can't die. I've experienced death countless times. Sometimes, I see a bright light. Sometimes, I see Heaven or Hell. But eventually, no matter what, I wake up in my bed wearing my same old clothes. The worst part? No one even remembers me dying. I go to school the next day and everyone is just like "Oh, hey Kenny," even if they had seen me get decapitated with their own eyes.]]
* Much of Shelly's over-the-top abuse of Stan, like electrocuting him with a TV, ''running over his face with a lawnmower, burning and dousing him'' (though that was a DeletedScene), and ''[[SuperStrength crushing him (and Kyle) with a piano.]]'' [[HairTriggerTemper DO NOT piss her off.]]
** Also, when Cartman once badmouthed her behind her back, he reacted with ''absolute fear'' when she addressed him. Oh, and not to mention she's based on Trey Parker's sister (though the worst she did to Trey was push him down some stairs, lock him out of the house, and punch him in the face. Compared to what Shelley does to Stan on the show, it's nothing).
* The Woodland Christmas Critters?
-->'''[[Franchise/FridayThe13th Jason]]''': [[EvenEvilHasStandards Man, I do]] ''[[EvenEvilHasStandards not]]'' [[HorrifyingTheHorror want to meet the kid that dreamt those things up.]] [jump cuts to Eric Cartman]
** Given what the villainous cohorts already [[EyeScream did with]] WesternAnimation/StrawberryShortcake, their own [[UpToEleven suggestions]] are pretty goddamn frightening.
* ''''' GOD! ''''' Yes, God is on here. He may be one of the most terrifying things to come on the show. He is shown to be a short-legged squirrel, elephant, cat, hippopotamus tetra-morph with an extendable, reptile-like tongue. And his voice! Oh god, his fucking voice is scary!
* Tweek Tweak has on multiple occasions offered other kids coffee as a host, which they tend to refuse. You know what's in his coffee? Meth. It's not entirely clear whether Tweak has no idea or thinks what's sprinkled in there is a harmless special ingredient, but can you imagine kids drinking that coffee? You know, kids who haven't built up Tweek's special tollerance.
* [[https://www.youtube.com/watch?v=R7CWcxd30Xs The original version of the theme song]] that aired during the initial airing of the pilot. The music just sounds ''wrong'' [[EarlyInstallmentWeirdness when slowed down that much]]. Not helping is the boys' singing, which is completely void of emotion.
** Long-time fans may recognize that down-tempo version as being the ending credits theme, but the "singing" does make it sound a lot creepier.

* The operation scene is this mixed with {{squick}}.
* Kenny's death. It even has a small HopeSpot before coming to a bloody end.
* Kenny getting sent to Hell, complete with demons fighting over him.
** Don't forget that, according to the movie, almost EVERYBODY goes to Hell. Kenny even runs into Mahatmas Gandhi down there! The population counter for Heaven reads 1,656, while the population counter for Hell reads over 900 billion and ''keeps increasing.''
* The M.A.C. in general. It starts out as another of Sheila's MoralGuardian soapboxes, but it quickly escalates into a plan of war, mass murder and ''genocide''. [[DisproportionateRetribution All because of a dirty movie.]]
* The war itself, with soldiers on both sides getting shot, stabbed, beheaded and dismembered.
* Just how quickly the USA becomes all but indistinguishable from Nazi Germany. Not one adult has any objections.
* There is even an operation where the black African Americans are on the front lines in the war against Canada. Given the divisive culture of today's politics, this operation would be considered racist and even Chef objects in the movie.


[[folder: ''Season 1'' ]]

* In "Cartman Gets an Anal Probe", the "dream" that Cartman insists he had about aliens probing him doubles as an in-universe example.
* The Grim Reaper chasing the boys in "Death".
** Grampa Marsh's grandfather. Enough said.
* The deleted ending of "Fishsticks" is rather disturbing. In it, the Coast Guard finds Music/KanyeWest's body in the water, apparently drowned. He has a rather disturbing expression on his face.
* The end of "Pinkeye," when all the zombies revert back to their normal selves and we see a TON of dead bodies scattered around the field.
** Very likely the dead bodies were those people that were originally buried when the episode began.
* ''Very'' narrowly averted with "Starvin' Marvin." The episode was originally going to end with Sally Struthers being killed and the Ethiopians feasting on the fat from her belly for Thanksgiving. However, [[ExecutiveMeddling Comedy Central would not allow the episode to end in such a way.]] So it ended with Struthers being tied up as the Ethiopians feasted on Dr. Mephesto's cloned turkeys.
* In "Tom's Rhinoplasty", Wendy sends Miss Ellen into the ''fucking Sun'' at the very end of the episode! Also Wendy getting Miss Ellen kidnapped by Iraqis and sent into the sun was solely [[DisproportionateRetribution because]] [[MurderTheHypotenuse Stan developed a crush on her]]?
--> '''Wendy''': Bye-bye, Miss Ellen.
--> '''Kyle''': Wendy, you didn't!
--> '''Wendy''': I warned her. ''(her eyes change)'' [[PunctuatedForEmphasis Don't. Fuck. With Wendy. TESTABURGER!]]

[[folder: ''Season 2'' ]]

* Stan's hellish vision of Kyle's parents in "Ike's Wee Wee".
-->''"Let us cut off your pee-pee, Stan!"''
* Seeing the remains of the people everybody was forced to kill and eat in "Cartman's Mom Is Still A Dirty Slut" could definitely give some kids nightmares.
* Another early example can be seen in "City on the Edge of Forever", in which the children are trapped on a school bus teetering off the edge of a cliff. One of the students, an actual RedShirt, decided to take his chances outside even after Mrs. Crabtree said there was a big, black, monster outside. He seems alright at first but then the monster attacks, grabbing him and pulling him into a tree. As the students watch on to learn of his fate, WHAM! His eviscerated body hits the window. The children think they're safe until the monster rips the top off the bus and steals Kenny. Yes, it was AllJustADream from Stan but the fact remains. [[http://images.wikia.com/southpark/images/6/6f/Big_Black_Scary_Monster.jpg That monster was something that comes from the bowels of your worst nightmares]].
* Seeing the remains of Tom and Mary at the end of "Cow Days." Granted, they were just extras with little significance to the episode's plot. But still...
* Sharon's SanitySlippage and the satanic pets in "Spookyfish".
** The fish itself. It doesn't swim, just stays in one spot staring at Stan with a creepy grin, sends creepy messages to Stan, and can kill people in gruesome ways.

[[folder: ''Season 3'' ]]

* Veronica's transformation in "The Succubus". It comes out of nowhere and causes the entire plot to turn [[MoodWhiplash from a "bros before hos" storyline into a quest to save Chef's very soul]]. It is quite possible that Franchise/ArchieComics characters Jughead and Veronica are the inspiration for this episode.
* "Tweek vs. Craig":
** This episode is notable for shop teacher Mr. Richard Adler reliving the stress of his fiance's death which is pictured in live-action elements.
** Mr. Adler does try to kill himself by laying on a sawbelt, but the fight between Tweek and Craig, which the boys have been trying to promote, spills into the shop class and kills Kenny in a pile of rusty nails.
* "Sexual Harassment Panda" is an exercise in stupidity at best. Let us count the ways.
** First the title character tells kids that they should sue one another in court in order to get rid of sexual harassment.
*** And this is after five hours of showing the children ways to commit sexual harassment.
** The first case just happens to be Eric Cartman vs Stan and the school with Kyle's Dad, Gerald representing Cartman for Stan calling him an ass-sucker. Cartman ends up winning and taking half of Stan's belongings.
** However things quickly spiral out of control with the lawsuits piling up, the Broflovski's getting richer, and the school system getting poorer to the point that the students have no desks and Mr. Garrison has to write on the chalkboard with a rusty nail.
** Eventually the case of Everybody vs Everybody is heard. This happens to take the issue to the extreme which is SOP for the series.
** Even the way Kenny is killed is surreal as he holds a magnet which is pulled into a fan that then chops him into many bloody pieces.
* "In "World Wide Recorder Concert", a "[[BrownNote brown note]]" causes the person who made the note to crap their pants. Our four boys intend to get this music revision to the New Yorkers that have been bullying them the entire episode.
** This attempt at changing the music ends up affecting everyone as the organizer thinks the music has been changed yet again, and as a result, the entire world craps their pants when the "brown note" is played by 4 million children.

[[folder: ''Season 4'' ]]

* "Cartman's Silly Hate Crime 2000": This episode is notable for the fact that all crimes are hate crimes and the fact that Cartman can sneak Disneyland into juvenile hall by using his anus.
* "Trapper Keeper." On one hand, it's an awesome episode with a cool homage to ''Manga/{{Akira}}'' (among other sci-fi classics). On the other hand, ''[[TransformationTrauma it has an homage to Akira]]''. And then the B-plot is about Rosie O'Donnell...
* In "Hellen Keller", Cartman's blindfolded and has headphones put over his ears in an attempt to understand how it'd feel to be Hellen Keller to get inspiration for lyrics, every time he closes his eyes, he sees horrible stuff, like a body being opened up, a rotting corpse, war, an atomic bomb going off, a rat eating a dead rat, a man on fire, [[ArsonMurderAndJaywalking a mime]] and other stuff. Cartman mentions that he sees that everytime he closes his eyes. What makes this scene even worse is the fact that all the aforementioned footage is shown in '''live-action'''.
* In "Fat Camp", the manatee dissection scene. They use actual photographs of various muscular structures. Then the ridiculous amount of peer pressure Kenny receives regarding the manatee spleen. First Stan and Kyle make him dissect, then the other kids get him $41 to eat manatee spleen, then an additional $19 to eat the regurgitated spleen. This leads to Kenny's rise to fame as a gross out stuntman. The whole thing is really frightening because it all started with his friends egging him on.

[[folder: ''Season 5'' ]]

* People vomiting up their intestines in "It Hits the Fan".
** The entire episode can be seen as a message to not blindly follow Television. Practically all of New York is in Times Square to watch the HBC series "Cop Drama" which kick's off the entire mess in the episode. In addition, the network has a night of a million shits which is saying the "S" word live a million times. A lizard-like monster attacks everybody attending the live performance of "The Drew Carey Show."
* When [[AbusiveParents Butters' mom]] learns about her husbandís horrible secret in "Butters' Very Own Episode", [[SanitySlippage she starts to paint the walls while slowly losing sanity.]] She even goes far to [[UpToEleven kill her own son!]] [[KarmaHoudini She does not even get arrested!]] Holy shit!

[[folder: ''Season 6'' ]]

* The ending of "Ass-Pen" is also a little... troubling, to say the least. To wit, the scene where the nerdy girl lifts up her shirt to reveal [[Film/TotalRecall1990 two grotesque creatures]] in place of her breasts, and [[BigLippedAlligatorMoment it appears out of nowhere as well without any indication that it's going to happen]].
* In "Freak Strike", when the freaks tell Butters about the time they killed a freak impostor ("Lobster-boy", who actually was just a normal lobster) by boiling him alive, and we see Butter's imagination of the lobster cooking in a scalding metal cauldron, complete with eerie piano music and the sound of the lobster crying in slow agony.
* Wendy getting breast implants in "Bebe's Boobs Destroy Society." Luckily, the syndicated version of the episode removes the scene.
* The entirety of "The Death Camp of Tolerance".

[[folder: ''Season 7'' ]]

* In "Krazy Kripples", Creator/ChristopherReeve demonstrates using stem-cells.
* In "Lil' Crime Stoppers", the boys continually want to solve crimes in South Park. Despite the simplistic nature of the incidents (stolen pie, lost doll) they essentially screw OccamsRazor and come up with insanely brutal motives. Some of the details include having a older gentleman beat his wife with a hammer, decapitate her and dissolve her body in acid. Another has a pedophile looking into a girl's room and cutting himself in pleasure.
* In "Casa Bonita", upon hearing that Kyle is going to Casa Bonita for his birthday, Eric Cartman stops at nothing in an attempt to go there once he hears that he can go if Butters can't, meaning that Cartman becomes a MagnificentBastard as he elaborately lies to Butters about a meteor crashing into South Park, traps him inside a bomb shelter for ''3 days'', sending the town into a search for him and [[XanatosSpeedChess upon hearing that the police are going to check bomb shelters, moves him into an abandoned gas station]] and traps him inside a fridge... only for it to get sent to the dump and he gets convinced that the meteor really did hit it. If not for a worker at the dump finding him, he would have likely remained missing for much longer than a week and Cartman would have gotten his wish of going to Casa Bonita. [[TheBadGuyWins He very barely manages to get away in the end though]] with the authority very close by him and ends up jumping off of a fake cliff into some water. When he lands, the captain asks him if it was worth it that he sent his entire town into a panic, lost all his friends and was going to be sent to Juvenile Hall for a week, his only response is [[WorthIt "totally."]]

[[folder: ''Season 8'' ]]

* "Good Times with Weapons" is without a doubt this. The basic plot is that the boys get martial arts weapons and pretend they're ninjas, compete with an ArtShift to that of an average anime. Butters wants to play with them but the boys refuse him, so he later encounters them as [[SuperpoweredAlterEgo Professor Chaos]] and fight him in a typical anime fight sequence... only for Kenny to throw a shuriken [[EyeScream directly into his left eye]], revealing his true self and ending the sequence. His anguished screams and how the boys cover the scene up in an attempt to heal him don't help matters much. Talk about the designated [[TheWoobie Woobie]].
** The worst of it probably comes close to the end with him (still dressed in the slap-dash dog disguise, covered in not only his own blood, but dirt and his own tears) finally making it to the veterinarian hospital. He's so traumatized that he continues to pretend to be a dog, pitifully whimpering out "woof woof", and all the hospital staff looks horrified. Right up until they deliver the WhamLine that they ''would'' help him, but since he's a "dog", he needs a vet.
** "We can't do anything to help him, we'll have to put him down. [...] Let's just murder one of these other dogs." This line was said by the ''town veterinarian''.
* In "Up the Down Steroid", Jimmy Valmer takes illegal steroids he acquired from (his at the time of the episode future rival) Nathan to cheat at the Special Olympics. Eventually, his roid rage gets the best of him and he threatens and attacks his girlfriend with his crutches when she threatens to leave him. Jimmy's mother tries to intervene, but Jimmy beats her as well. He then puts a dent in a wall with his crutches before breaking down in a fit of agony. The effects of drug abuse could not have be made any more clearer in this episode.
* In "The Passion of the Jew", Kyle has an EXTREMELY DETAILED nightmare where Jesus is crucified. Kyle is the one poking Christ with the spear at the end of the nightmare. Eeesh.
* The scene in "You Got F'd in the A" where a traumatized Butters is looking through the box containing his old tap-shoes. The music starts off sad and sentimental as he looks through the articles about his winning performances, then turns darker and creepier, as do the articles. Later, we get a flashback to the trauma: during his last performance, his tap shoe flew off and knocked down one of the stage lights, setting off a small-scale massacre as people were cut in half by wires, crushed by falling objects and trampling one another. Oh, and Butters gets splattered with their blood as he watches in horror. Only ''South Park'' could turn a tap-dance competition into ''that''. And when Stan and some other kids finally convince Butters to tap dance again as part of a dance squad competing against a rival squad, he ends his performance by having his shoe fly off again, disconnecting some stage lighting and ''killing the opposing squad''. Which makes the South Park squad the winners by default. Which results in Butters yelling out in horror as his inadvertent killing of six people is '''celebrated.'''
* The episode "The Jeffersons" (The episode about Music/MichaelJackson). The whole episode has a creepy atmosphere, but the worst part has to be the end of the episode when parts of the face of Mister Jefferson fell off, starting for the nose.
** Special props go to the impromptu sleepover at Stan's place, complete with his nightmare about Mr. Jefferson and Cartman starting to make out.
* "Pre-School":
** First we have the horrible fate of Miss Claridge the preschool teacher. Burned nearly beyond recognition, [[Series/StarTrekTheOriginalSeries confined to an electric wheelchair, and her only method of communication is beeping once for "yes" and twice for "no."]]
** Then we have Trent Boyett, who was wrongly imprisoned because he was believed to be responsible for Miss Claridge's fate (in reality, the four main characters talked him into it). In his crazy drive for revenge, he hospitalizes Butters and a whole gang of older boys with a series of stereotypical bully attack moves (wedgies, Indian burns, noogies, etc.), but also a lot of nastier ones, like one which involves "tabasco sauce, a telephone pole, and the anus."
** The boys' ''complete apathy'' when it comes to the situation, both Miss Claridge's fate and Trent's wrongful imprisonment. They do try to tell Miss Claridge that they caused the accident, but only because Stan's older sister made them do it in exchange for protection from Trent.

[[folder: ''Season 9'' ]]

* ''Mr. Garrison's Fancy New Vagina''. All of it, including the opening scene, Gerald as a dolphin, and Kyle breaking his legs in his tall black kid body. Said opening is about Mr. Garrison getting a sex change, cutting between Mr. Garrison with ''live-action footage of a real sex-change operation!''
* In "Ginger Kids", when the ginger kids swarmed and kidnapped all the non ginger kids, it was pretty horrific. That and Cartman came really close to succeeding in his plan to wipe out all non-gingers.

[[folder: ''Season 10'' ]]

* "The Return of Chef": [[CruelAndUnusualDeath He was burned, battered, impaled, shot,]] [[FacialHorror his face]] ([[EyeScream including one eyeball)]] [[CruelAndUnusualDeath was pulled off, and his limbs were torn apart by a grizzly bear and a mountain lion, and he finally defecated as he died.]] [[TearJerker You can even hear the poor man screaming for his life!]]
** On a subtler note, there is the fact that all of Chef's dialogue is recycled from earlier in the series due to Isaac Hayes' absence. Due to taking a lot of dialogue out of context, Chef's voice tends to randomly shift tones as words from previous lines are spliced together to make complete sentence, causing jarring tonal shifts that indicate a sort of linguistic UncannyValley. [[note]]UsefulNote: Isaac Hayes left the series because it made fun of Scientology in "Trapped in the Closet" which featured Tom Cruise refusing to come out of Stan's closet.[[/note]]
* Kyle's nightmare in "Cartoon Wars" in which the town is attacked by terrorists, and Ike goes missing. Kyle finds him just as a nuclear warhead goes off, complete with a very graphic depiction of '''IKE'S BODY MELTING WHILE SCREAMING AN ECHO-Y''' ''' ''"KKY-Y-Y-Y-Y-Y-Y-A-A-A-A-A-A-ALLLL!!!!!!"''' '' '''FOLLOWED BY KYLE.''' ''' ''("I-I-I-I-I-I-K-KKKEEEE!!!!!!")'' ''' Easily the single most horrifying display of graphic violence in the series to date, not to mention somewhat tearjerking considering it is centered around Kyle and his baby brother.
** It should be noted that the image of Ike burning alive as he screams used to be this page's image. Most likely, it was changed for being too graphic and unsettling, and something of a JumpScare if a hapless troper was not expecting it.
* "Tsst", Cartman is about to murder his mother when he gets into a fight with his inner demons, vomits black goo and starts [[Film/AlteredStates flickering like a TV set into different forms]].
** The ending where we see Liane spoiling Cartman and it zooms up to his face while [[Film/TheOmen1976 "Ave Satani"]] plays.
* In "Mystery of the Urinal Deuce", the show explores 9/11 conspiracies. Eventually Stan, Kyle, and and a 9/11 truther are arrested by government agents and dragged before UsefulNotes/GeorgeWBush. He gives them a chilling speech on how the public will never know or accept the truth about how the government caused 9/11, before executing the truther. Stan and Kyle are barely able to escape with their lives, becoming fugitives. Of course, all this is subverted later on, when it's the government just wrote conspiracy theories, and the so-called conspiracy theorist is alive and well, but ''damn'' George Bush was made scary.
* The climax of "Stanley's Cup". When the pee-wee hockey team that Stan is coaching go on to play against the Detroit Red Wings, they are brutally, horrifically, and bloodily beaten up. What makes this scene even more horrible to watch is the fact that Nelson, a kid on their team who came down with cancer, had to see this as the last thing he saw before he died. Doubles as both NightmareFuel ''and'' [[TearJerker/SouthPark Tear Jerker]]
** The child actor who voices Nelson is heartbreaking in the role. He makes Nelson sound so weak and vulnerable that it's almost like they got an actual cancer patient to voice the character.

[[folder: ''Season 11'' ]]

* Almost all the lice getting wiped out in "Lice Capades."
* In "Night of the Living Homeless", a parody of the ZombieApocalypse where the large group of homeless that overruns the town are the "zombies". And both are in the same few minutes. When the kids traveled to Evergreen, Colorado, the last place these "zombies" were, there's only 3 guys left in the entire town, carrying shotguns and wearing filthy, plant-covered clothing. They tell the kids of how the homeless flooded their town, moaning about "change" (as opposed to brains). Eventually though, the homeless got enough to rent apartments... soon, it was impossible to tell who was "homeless" and who was not. The Wall Banger, of course, was that if you could rent an apartment, you weren't homeless anymore. But everyone treated it like it was an actual, incurable affliction, like most zombies are. So, the "leader" of the three guys "found out" that his wife was "homeless". He was shocked at that "information" and wondered how could he have possibly missed this after 20 years of marriage! So, he had to kill her...with a flamethrower. The Nightmare Fuel comes in when the rubble behind the "survivors" starts shaking... and this gray, vaguely-human shaped thing rises from the rubble, moaning. That's his wife, still somehow alive despite having maybe about 75% of her flesh burned away. After some rather useless dialogue "''You nurned ny ips ough!'' (You burned my lips off), she shoots all three dead, after sustaining several bullet wounds herself.
** In that same episode, a scientist tries to shoot himself to death...and fails. He then proceeds to keep shooting himself all over his body, with many shots to the head and heart and still doesn't die. When he finally does, there's a huge puddle of blood underneath him. Just think about living in all of that pain. It makes you shudder, doesn't it?

[[folder: ''Season 12'' ]]

* "Britney's New Look", also known as the ''entire episode'' devoted to Music/BritneySpears, doing a graphically-animated impression of [[http://en.wikipedia.org/wiki/Mike_the_Headless_Chicken Mike the Headless Chicken]]. Urgh. (By the way, for more Nightmare Fuel, [[SchmuckBait click that outgoing link]].) Very little humor, lots of gore, and lots of biting, truly unsettling social commentary. For those too afraid to watch the episode, Britney shoots herself in the face after being tricked into thinking the South Park kids are her sons, but fails to kill herself and is left instead without most of the top of her head. She appears to be unaware of anything that's going on, but is still paraded around on stage as-is to do a concert. [[FateWorseThanDeath Being as in her current state]] [[AndIMustScream all she's capable of doing is making a horrible gurgling sound]] she proceeds to get shot down by fans and media, and a frighteningly literal comparison is drawn between human sacrifice and the way society sets up celebrities, then viciously tears them down. The entire episode is both nausea fuel and nightmare fuel, but as always, SomeAnvilsNeedToBeDropped.
* The scenes in "The China Problem" with Creator/GeorgeLucas and Creator/StevenSpielberg raping Franchise/IndianaJones. Those scenes were supposed to be played for laughs, but are nothing short of disturbing.

[[folder: ''Season 13'' ]]

* Gordon Stoltski's horrifying murder over the school intercom at the start of "Dances with Smurfs." We get to hear an armed psychopath burst in, shoot a faculty member, then kill Gordon while forcing the confused and terrified 8-year-old boy to fellate the barrel of his gun. That the psycho apparently confused the kid with a similarly-named trucker who cheated on his wife strongly suggests the whole thing was PlayedForLaughs, which makes it so very much worse. We love you, Matt & Trey, but seriously; what the ''fuck'', dudes!?
** If just hearing it horrifies you, someone made a [[https://www.youtube.com/watch?v=RegUuKO9Whg fan animation of the scene]]. Holy fuck.....
* Doubles as NauseaFuel: The idea of drowning in urine in "Pee."

[[folder: ''Season 14'' ]]

* "[[AllMenArePerverts Sexual Healing]]". The [[TechnicallyASmile chimp's]] [[SlasherSmile face]].
* In "201", Scott Tenorman's return as a Joker-like supervillain gets pretty unsettling. There's something about the bags under his eyes and slightly messed-up state of his hair that goes into UncannyValley territory. He also takes a little too much pleasure [[NoYay getting right up in Cartman's face,]] which even Cartman seems creeped out by throughout that scene.
** Also, what's in the chili he was going to feed Cartman? Given what's revealed immediately beforehand, it might be the same chili Cartman gave him back then!
** Cartman actually seems scared when he sees that his mother's been captured by Scott. For all we know, had he not been interrupted, Scott might have tried to kill her in front of Cartman to make things perfectly even.
* In the episode "[[Recap/SouthParkS14E10Insheeption Insheeption]]", Stan, a sheep hearder and Mackey go into Mackey's therapy dream to reveal a field trip where Mackey runs from bullies, hides in a building and is molested by Woodsy Owl only to reveal [[Franchise/ANightmareOnElmStreet Freddy Krueger]] piercing Woodsy Owl's chest open and Mackey waking up so Stan doesn't want his therapy and Kyle asks how he knows that wasn't his.

[[folder: ''Season 15'' ]]

* Kyle being hunted down by Apple so they can make him part of the "[=HUMANCENTiPAD=]" in the episode of the same title.
** The sight of Kyle being the middle of a human sandwich is jarring at best.
* In the episode "City Sushi" Dr. Janus and his multiple personalities were quite scary. Mainly the part parodying ''Film/ParanormalActivity'' where he comes into Butters' bedroom, stares at him for 3 hours, urinates on his face, then beats him and leaves before he wakes up.
* All the "shit" imagery in "You're Getting Old". Also counts as ''serious'' NauseaFuel.
* The end scene of "1%" with Polly Prissy Pants. Cartman is more fucked up than anyone thought.
** The charred body of Peter Panda.
** Muscle Man Mark being [[KillItWithFire boiled alive]], ''Film/FatalAttraction'' style.
** Considering [[VisualNovel/UminekoWhenTheyCry the series the episode may have been a parody of]], (more specifically a jab at the Shkannon Culprit Theory) it should not be surprising this episode is nightmare fuel.
* In "The Poor Kid" the police remark on how it's supposed to feel safe. However when they show the soft room surrounded by pictures of creepy looking clowns...
** Then there's [[TheyKilledKennyAgain Kenny's rather epic death]] at the end of the episode. Even with all the [[{{Foreshadowing}} foretelling implications]], it still makes for some major MoodWhiplash.

[[folder: ''Season 16'' ]]

* Cartman's NightmareSequence from "Jewpacabra", from lambs being sacrificed, to childrens' [[YourHeadASplode heads exploding]] which concludeswith his own head exploding.
* The scene where the 2012 GOP candidates say quotes they said in RealLife during the local debate in "Faith Hilling". The voiceover quotes and how unlike most celebrity appearances their appearance had little humor until they started Faith Hilling gave it a creepy and surreal UncannyValley vibe.
* Butters' Grandma as seen in "Butterballs". [[EvenEvilHasStandards At least his parents don't beat him]] [[ExecutiveMeddling (not after what happened in "Jared Has Aides")]].
** Special mentions go to stabbing him with a fork under the table and trying to force-feed him a urinal cake.
** How Butters beats her in the end is worse, since he has no idea that what he said scared her as much as it did.
*** [[AlternateCharacterInterpretation Or maybe he knew exactly what he was talking about.]]
* The completely senseless death of the UPS driver in "Insecurity", mostly due to the parallels with real life situations of innocent people having their lives destroyed by ignorance.
* Randy's SanitySlippage a la ''Film/TheShining'' in "A Nightmare on Facetime".
* "Let Go, Let Gov". Where the NSA gets all their information from: hooking up Santa Claus to a machine.
** ''And nobody cares!''

[[folder: ''Season 17'' ]]

* Aaron Hagen's dead mother being wheeled out by paramedics in "Informative Murder Porn". Her face is horribly disfigured with a knife being [[EyeScream lodged in her eye.]]
* The Black Friday shoppers brutally killing each other in "Titties and Dragons". What makes it worse that those scenes are mixed in with ''actual Black Friday footage'' to make you realize ''what's happening in the cartoon is no different from real life''.
** Towards the finale, when the kids go through the mall to buy a video game console, they go through a ''literal lake of blood'' to get there. The carnage was caused by the usual Black Friday human greed chaos.
*** The entire "Black Friday" trilogy ended up leading to the launch of the South Park video game, "The Stick of Truth." This means that you can not only watch South Park for bloody gore, but produce your own gore on your own video game system.
* In "It's a Jersey Thing", you have Snooki.
** "Snooki wants Smoosh-Smoosh!"

[[folder: ''Season 18'' ]]

* The men's penises flying off after eating gluten in "Gluten-Free Ebola".

[[folder: ''Season 19'' ]]

* PC Principal in "Stunning and Brave." The trait of ComicallyMissingThePoint hasn't been this violent in a long time, [[NoHoldsBarredBeatdown as Cartman found out the hard way.]]
** Hell, Cartman getting beaten to a bloody pulp by PC Principal (as opposed to kids beating his ass) is cringe-inducing, especially as it is tense as fuck! He probably didn't know about the correct term of "spokesperson" (as well as the fact that using words such as "capiche" implies that he associates it with the Italian community, which is un-PC), which explains why it is so hard to watch, despite being a {{Jerkass}} himself.
** Cartman plans to frame PC Principal for pedophilia by showing him Butters' underwear to prove his point, [[{{Squick}} and then gives it a loud sniff, stating that is indeed Butters' underwear. Used, that is.]] As if he couldn't get any more disturbing.
** And to top it off, the kids watch the beatdown from the bathroom window.
* From "Where My Country Gone?", we have Mr. Garrison raping a Donald Trump {{Expy}}. It's pretty funny in theory, but the actual scene looks like something from a horror film. Given that it came out immediately after the episode that lampooned Political Correctness, it's possible that Matt and Trey were trying to mentally prepare their audience for this.
** Before that, we had a scene showing that PC Principal practically has Mr. Mackey as his [[strike: slave]] ([[Main/RunningGag woo-woo!]]) servant. Him ''shuddering in fear'' in PC Principal's presence is what really sells it.
* The realization that the events from "The City Part of Town" have been slowly killing South Park as we know it, as overpricing is driving the locals closer and closer to bankruptcy. This is all a conspiracy by the ads so that they can wipe out the human race.
* "Safe Space": Butters is tasked with removing any negative comments from the online profiles of Cartman, Creator/StevenSeagal, Demi Lovato and several other people who are sensitive about their bodies. The overwhelming negativity he has to endure breaks his mind and causes him to run through the school completely naked before leaping out of a window and badly injuring himself.
** Afterwards, Butters' job is outsourced to some starving children in a Third-World nation. [[FridgeHorror They're now going to be exposed to all that ridicule purely because some overweight Americans want to have their egos stroked when they post pictures of themselves.]]
** It gets worse from there: Butters (now in a neck brace) is forced to publicly execute the physical embodiment of reality, even though he was the one who made everyone realize what the poor kid had to go through for them.
* "Tweek x Craig": This episode shows why you shouldn't put boys in yaoi.
* "Naughty Ninjas": The police are called in to the school, bringing with them near military-grade equipment. You'd expect there to be a school shooter, instead it's just PC Principal trying to get Leslie to shut up again. The guy's gone from being a bully to a full-blown fascist.
** The town's attitude towards the cops starts out moderate, then swings from one extreme ("Fuck the Police" mentality) to another (creating a police state).
** Barbrady shooting David, one of the kids. Luckily, David didn't die.
** And at the end of the episode we find out that PC and Leslie might be part of a greater conspiracy.
* "Sponsored Content": A GEICO executive comes over to Jimmy's house and offers $28 million for an ad placement in the school newspaper, which Jimmy refused. After some failed word manipulation, he pulls out a gun and explains about the adaptability of Ads. Had Barbrady not have been there, Jimmy might have been shot.
* "Truth and Advertising": Leslie and Jimmy continue to converse and Jimmy is slowly beginning to fall for her wiles. The boys similarly get sidetracked from the big conspiracy by random ads which slowly turn Stan and Kyle against each other. Then Leslie takes advantage of Kyle. No, not in the way we associate that term with.
* "PC Principal: Final Justice": Remember all those times PC Principal beat up one of his students? It turns out he's been ''holding back''.
** The scene where Cartman threatens his mother at gunpoint [[DisproportionateRetribution because she told him to go to bed]].
** As Jimbo is selling a gun to an old lady:
--> "Remember: If the safety's on, you're as good as gone!"

[[folder: ''Season 20'' ]]

* The Season 20 opener, "Member Berries", has the sentient berries, who constantly want you to remember what was in the past. Randy is freaked out however, and stops eating them .
** [=SkankHunt42=], a troll who makes fun of women. Nobody knows who this person is, yet the other boys think Cartman is the one behind this.
** It turns out that Gerald, of all people, is [=skankhunt42=].
* "Skank Hunt":
** Notice how Ike is not talking to Gerald in the scene. Like Ike knows.
** What the boys are going to do with Cartman. The way they're saying it, it's possible that they're going to '''murder him'''. They don't really do it, they just destroy his electronics.
** But, however, the above manages to be scary as Cartman is screaming throughout the aforementioned scene. It's made even worse in the teaser for the episode, in which there's absolutely ''no implication of what's happening''. It cuts off when Cartman discovers the hole and shovel next to the cabin and we can only hear him screaming bloody murder.
** Scott Malkinson's attempts to delete his Twitter account. The poor kid does not want to be trolled, and his talking to Mr. Mackey isn't working, as he even talked to him at night.
** For the record, the episode says that you are dead if you don't have a social media account.
* "The Damned":
** The very first few minutes of the episode has the police (no Officer Barbrady) investigating why Cartman no longer has a Twitter account.
** Freja ''committing suicide'' because of Gerald's trolling.
** Randy's reaction to the amount of Member Berries on the farm.
* "Wieners Out":
** Gerald's [[SanitySlippage sanity is gradually chipped away by the stress of avoiding being discovered and forcing himself to quit trolling cold turkey]].
** When Sheila walks in on Gerald venting his pent-up hatred on a tablet she bought him in replacement of his destroyed electronics, Gerald's face [[JumpScare briefly changes to look more terrifying.]]
*** Gerald decides to explain himself by faking a piss fetish. This manages to cover up his trolling, but Sheila supports this apparent kink by peeing on Gerald, making "piss porn".
** When Gerald finally meets with his anonymous stalker after receiving a cryptic email in "The Damned", he learns that Denmark is creating [[ParanoiaFuel an online service that can remove all anonymity from any given message on the Internet]].
* "Douche and a Danish":
** After Mr. Garrison manages to torpedo his own campaign, he's chased throughout town by his aides and supporters. Garrison tries going back to teaching, but his aides find him and drag him out as he screams ''"They're going to kill me!"''.
** How about Mr. Garrison entering Randy's club? Garrison doesn't even know what Member Berries are.
* "Fort Collins":
** The consequences of everyone's internet history being revealed turns the quiet town of Fort Collins into a firey hellhole filled with nothing but chaos, and the local troll is burned alive by one of his victims for insulting his daughter.
*** In the next episode, we see the aftermath. Fort Collins has turned into a hell-hole where people are afraid to go outside. The area has been quarantined off and anyone brave enough to try and escape is shot on sight. But that's not the worst of it. The real nightmare fuel is the knowledge that this is what [=TrollTrace=] has planned for the whole world!
** Gerald's reaction to the chaos caused by [=TrollTrace=]: what he thought was just a harmless internet hobby he did for a few laughs could wind up endangering not only himself, but his family as well.
** Heidi Turner discovers that the key to finding out who said what on the Internet is to check how they use emojis. That's right: a ''ten-year-old girl'' figured out the secret to finding the identity of anonymous Internet users. Not only that, but it's brought her closer to discovering Skankhunt's true identity.
** Randy and Garrison's attempt to kill the berries. They attempt to ''burn them alive'' with a flamethrower. Then they pour chemicals on them.
* "Oh, Jeez":
** The Member Berries reach a new level of terror. After being ingested by Caitlyn Jenner, they use her as a plague dog to brainwash anyone who has stopped eating them by vomiting in their faces. The way her jaw dislocates is pretty unsettling.
*** They infect Randy, who in turn infects Sharon and Shelly.
*** Even worse? This was never touched upon again!.
* "Members Only":
** The Member Berries ''swarm the Whitehouse!''
*** They then proceed to call Vladimir Putin, and ramble about the [[ColdWar Cold War]]. [[FridgeHorror How do you think that will turn out?]]
*** The Member Berries are going to bring back the storm troopers. Not [[Franchise/StarWars those storm troopers]], ''[[ThoseWackyNazis the real ones]]''.
** Lennart Bedrager reveals that he's fully aware of the consequences of [=TrollTrace=] and that the incoming holocaust will be used to establish a new world order.
** When Mr. Garrison visits PC Principal and reminds him that it was being called an intolerant asshole by the new principal that spurred him to become president. Now he's back and he's going to abuse his authority by forcing all the townspeople to suck his dick, starting with PC Principal.
** On a more meta level, RealityEnsues in pretty frightening fashion when [=TrollTrace=] kicks off a massive global crisis, and the new President Garrison has ''absolutely no idea'' how to even start fixing any of this.
* "Not Funny":
** Bedrager intends to cause a world war for a simple laugh. He's not doing this to avenge anyone, and [[DissonantSerenity the calm]] with which he tells Gerald this is... unsettling.
** Sheila spends the entire episode steadily going more and more ape-shit toward her sons, to the point of threatening to ''kill them'' at the end when they trap her in the kitchen cupboard.
* "The End of Serialization As We Know It":
** ''Trolltrace is online.'' Not only that, but it was online for ''at least fifteen minutes.'' Given what happened to Fort Collins, who knows how much damage has already been done?
** Sheila is ''pissed off'' after escaping from the pantry. And not only that, she acts like a ''wild animal'', screaming and growling, and scaring Ike.
** Cartman's visions of Mars, which have been progressing throughout the season, finally culminate with men being reduced to semen-and-joke-producing farm animals.
* By the end of the season finale, Gerald's trolling has gotten multiple people killed in two separate countries and ruined lives, including nearly causing the death of his sons. While faking an epiphany at gunpoint, Gerald reveals that he feels no remorse from his actions because he still thinks it was all pretty funny, and then [[KarmaHoudini goes back home to his wife]] (who still doesn't know anything), not having learned a single thing from the entire experience. The only mitigation we have is that Kyle and Ike (as well as the other trolls) still know and given [[BrokenPedestal their complete loss of respect for their dad]], they could expose him if they so choose.

[[folder: ''Season 21'' ]]

* The episode "Put It Down" shows [[https://www.watchcartoononline.io/thumbs/south-park-season-21-episode-2-put-it-down.jpg this]] is why you shouldn't look at your phone and drive at the same time.
** The episode hits on the real life Donald Trump for endlessly tweeting.
** Plus there is the frightening possibility of war between the United States and North Korea. This includes Tweek being scared out of his wits when North Korea launches a missle that is fired over Tweek's house. When you consider that Tweek drinks a ton of coffee, and that it might be laced with meth, this not only scares Tweek but could have killed him. We should note that it was the President that completely trashed North Korea for accepting cupcakes from Tweek. That it was the President that almost "killed" somebody is cause for alarm and should lead to conviction at a trial. Then again, this is the series that ended an episode by having a main character kill off a kid's parents, grind them, and serve them to the victim as chili.
* In "Doubling Down", Heidi starts falling for a whole new level of Cartman's manipulations, with him tricking her into changing her food choices and starting to buy into his racist and anti-Semitic beliefs.
** [[DownerEnding The end of the episode was even worse,]] where Heidi was manipulated by Cartman to reconcile with him, by telling him that Kyle is a Jew, and hence, not to be trusted. At this point, Heidi may have reached the point of no return...
** The episode features Cartman and Heidi breaking up and Cartman basically going off the deep-end when he discovers that Kyle caused the break-up during dinner with Token and his family. We even get the live action footage of dancing Jews during Cartman's tantrum. And to top it off, Cartman is so angry that he knocks out Kyle with just one punch.
** Let's not forget the President Garrison parts. When [=McConnell=], Pence and Ryan confront President Garrison, he locks them in the room with them after they threaten to try and impeach him, with the intent of ''raping'' them.
-->'''President Garrison''': ''Hope y'all brought some condoms''.
* "Moss Piglets" answers a question nobody dared ask: What if there were two Eric Cartmans/Cartmen? And what if Cartman 2 was arguably even more of a threat than the original? One's scary enough, but now there's a '''second Cartman''' who also shares most of his beliefs! Worst of all, it's '''''Heidi''''', who has been corrupted by Cartman into what he views as the perfect girlfriend, [[GoneHorriblyRight but may have unwittingly created a monster...]]
** PC Principal '''''is scared of Heidi!''''' He's dealt with Cartman before, but here he '''yields''' to her before she can do anything! And by the end of the episode, Eric himself ''fears'' his girlfriend and is unwilling to even try to fight her! There is nobody Cartman can't deal with... except himself!
** Throughout the episode, we see the development of water bears into an intelligent species of [[ItMakesSenseInContext NFL fans.]] Then Heidi drinks them.
* With the events of [="Super Hard PCness"=], Kyle causes Mr. Garrison to '''deploy a nuke to Canada'''. His mortified reaction speaks volumes about it.