[[quoteright:250:http://static.tvtropes.org/pmwiki/pub/images/treehouse_of_horror_ix.jpg]]

In 1998's tales of terror, Homer gets a hair transplant from a dead criminal (Snake Jailbird), Bart and Lisa go on TV (thanks to a radioactive remote control), and The Simpsons are the latest guests on ''The Jerry Springer Show'' after Marge confesses that Maggie was the product of an abduction-cum-one night stand with Kang the alien.

This was the first Simpsons episode to use the current production code "_ABF##"

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!!This episode contains examples of: ([[YMMV/TheSimpsonsS10E4TreehouseOfHorrorIX YMMV Examples here]])

* AngryFistShake: Snake's hair after being shot several times.
* AnimatedActors: Hinted to be the case with Itchy and Scratchy during "The Terror of Tiny Toon".
* ArsonMurderAndJaywalking: Snake's three crimes that get him sentenced to death in the chair follow this formula: he torched down an orphanage, blew up a bus full of nuns, and smoked inside the Kwik-E-Mart.
* ArtisticLicenseBiology: Electrocution will, in reality, ruin one's organs, making them unsuitable for transplantation. An execution by hanging, guillotine, or lethal injection would spare the organs. [[ParodiedTrope But then again, the only "organ" of Snake's fried corpse we see get donated for transplants is his hair.]]
* BaitAndSwitch: Bart screams as it looks like Snake-possessed Homer is about to smash him in the face with a sledgehammer. He actually hits and smashes Bart's school picture, which Bart points out.
* BeatStillMyHeart: Snake pulls Moe's heart out with a corkscrew and presents it to him before he collapses and dies.
* BigNo:
** Apu's last words before Snake kills him.
** Bart when Snake makes Homer attempt to kill him with a sledgehammer.
** Homer when he manages to regain control of himself from Snake, preventing Snake from killing Bart, and rips Snake's hair off his head.
** Scratchy when Marge tells him he's going to be neutered.
* BloodlessCarnage:
** Played straight with Apu and Moe's deaths, despite the latter having his heart pulled out while it was still breathing, and when flesh-eating piranhas devour Bart's skin below the neck, leaving just his skeleton.
** Averted when Itchy severs Scratchy's head and Bart and Lisa get blood splashed on them.
** Averted again when an ax lands on Bart's head and he panics when blood runs out from under it.
** Averted a third time when Itchy severs Scratchy's arms with a chainsaw by accident.
* BondOneLiner: After shooting Snake's hair:
-->'''Wiggum:''' Now that's what I call a bad hair day.\\
''([[EverybodyLaughsEnding Everyone in the room laughs, except Marge]])''\\
'''Marge:''' May I remind you that two people are dead, and... [[LateToThePunchline Oh, wait, I just got it!]] ''(joins in on the laughter)''
* BreakingTheFourthWall: Exaggerated. In "Terror of Tiny Toon", Lisa, trapped in the TV with Bart, tells Homer how to get them out. Itchy and Scratchy then ''literally'' do this by breaking through the screen into the living room.
* CallBack: In "Terror of Tiny Toon", [[Recap/TheSimpsonsS2E9ItchyAndScratchyAndMarge Marge forbids Bart and Lisa from watching Itchy and Scratchy]].
* CaptainObvious:
-->'''Lisa''': Of course, the transplant! Somehow Snake's hair must be controlling--\\
'''Marge''': [[LampshadeHanging Oh, please, Lis, everyone's already figured that out.]]
* CelebrityResemblance: Marge thinks Homer's hair transplant makes him look like Creator/RogerMoore... if his fly wasn't open.
* ChairmanOfTheBrawl: As with the Jerry Springer show, Kang wields chairs during his brawl with Homer.
* ChainsawGood: Itchy in the police cruiser attacks Bart and Lisa with a chainsaw, accidentally severing both of Scratchy's arms at one point.
* ClusterBleepBomb: The unsurprising result of the family's appearance on Jerry Springer.
** PrecisionFStrike
-->'''Marge''': I am so ''(bleep)''ing embarrassed...
* HeartBeatsOutOfChest: Scratchy invokes this when Snowball II snuggles up against him.
* CueCardPause:
-->'''Krusty:''' Hey, hey! Tonight I'm going to ''suck''!
-->[next card]
-->'''Krusty:''' ... your blood!
* DarkerAndEdgier: The episode uses a more macabre version of the show's opening sequence. We have Bart writing down the chalkboard punishment in blood, later him botching his jump off Homer's sunroof and snapping his neck. Lisa then follows suit by cycling into Bart's corpse and ricocheting headfirst into the garage wall, as Homer gets run over by Marge as she drives by. The couch gag then sees Freddy Krueger and Jason Voorhees sitting on the couch, apparently waiting for the family to arrive.
* {{Determinator}}: If Snake says he will kill you, he will do it. Even being dead doesn't stop him.
* DisproportionateRetribution: Because ''one'' audience member called out Kang for being a deadbeat father, he kills the entire Jerry Springer audience.
* EvilLaughter:
** Snake does one when he's about to kill Bart, but then Homer regains control of himself.
** Kang and Kodos as they leave in their spaceship.
** Maggie, of all characters, at the end.
* EyePop: In "The Terror of Tiny Toon" where Bart and Lisa are caught inside ''Itchy & Scratchy'''s show.
* FaceHugger: Maggie does this to the show host.
* FamilyRelationshipSwitcheroo: "Homer, Kang is Maggie's father."
* FanserviceExtra: The two showgirls who escort Snake to the electric chair.
* FightingFromTheInside: Homer at the climax of "Hell Toupée":
-->'''Bart:''' You've got to fight the hair, dad.\\
'''Homer:''' But I look so youthful and hunky.\\
'''Snake:''' ''(speaking through Homer)'' The kid's gotta die.\\
'''Homer:''' But I love my son.\\
'''Snake:''' More than a lush head of hair?\\
'''Homer:''' [[SadisticChoice Don't make me choose!]]\\
''(Snake does an EvilLaugh.)''\\
'''Homer:''' [[BigNo NO!]] ''(Proceeds to literally DropTheHammer from his hands and tear Snake's hair off his head.)''
* {{Foreshadowing}}: When Marge shows Maggie's first baby tooth (more like fang, actually), she's slobbering like Kang and Kodos, the first sign she's really Kang's baby.
* ForHalloweenIAmGoingAsMyself: Marge sees an unkempt, shabbily-dressed Homer eating from a can of beans:
-->'''Marge:''' Oh, Homer, you're not going as a hobo again?
-->'''Homer:''' Going where?
* TheFourthWallWillNotProtectYou: Itchy and Scratchy break through the TV screen into the Simpsons' living room, causing a MassOhCrap for the Simpsons, but it doesn't last very long as Itchy is promptly trapped by Homer and put in a hamster wheel, and Marge tells Scratchy he will have to be neutered after seeing he has eyes for Snowball II.
* GoryDiscretionShot: During Apu's murder.
* GroinAttack: Marge tells Scratchy he's going to be neutered after seeing he has eyes for Snowball II.
* HighVoltageDeath:
** Snake is sentenced to death in the electric chair.
** Itchy and Scratchy attempt to inflict one on Bart and Lisa but Homer changes the channel before it can happen and unwittingly saves them.
* ImprovisedWeapon: Snake kills Moe with his own corkscrew, which he uses to pull Moe's heart out while it's still beating.
* KidsAreCruel: Bart and Lisa laughing at Scratchy having his head cut off and used as a jack-o-lantwern. Itchy and Scratchy team up against them for it.
* KillItWithFire: Dr. Hibbert's solution to Maggie growing tentacles.
-->'''Homer:''' Is there anything you can prescribe, doctor?\\
'''Dr. Hibbert:''' Fire! And lots of it!\\
'''Marge:''' That's [[YourAnswerToEverything your cure for everything]]!
* LeaningOnTheFourthWall:
** Marge does this by cutting off Lisa's NarratingTheObvious moment, saying everyone has already figured it out.
** Marge does this again when she refuses to let Bart and Lisa watch the Itchy & Scratchy Halloween special: "Sorry, but if I let you watch some of these gruesome Halloween cartoons, I'd be a pretty lousy mother!"
* LookBehindYou: How Kang tricks Marge to look away and then impregnate her with his gun.
* MajorInjuryUnderreaction:
** After Snake pulls Moe's heart out with a corkscrew, Moe can only say "Aw, for crying out loud..." before dying.
** Itchy, while attacking Bart and Lisa in the police cruiser with a chainsaw, accidentally severs both of Scratchy's arms. Itchy says "Sorry," to him, to which Scratchy simply replies, "It happens," and steers the car with his teeth.
** After Itchy and Scratchy attack Bart with [[PiranhaProblem piranhas]] that eat his flesh and leave him a skeleton from the neck down, Bart just complains it was going to hurt tomorrow.
* MediumBlending: In "The Terror of Tiny Toon", Bart, Lisa, Itchy and Scratchy fall into the live action "Live With Regis & Kathie Lee" (as it was then titled) show. Regis Philbin and Kathie Lee Gifford both appear as themselves.
** It took so long to get the live-action part right, they couldn't broadcast the news from the same studio (''Live'' began as a local morning show on New York's ABC station, and it's been taped there, so they had to share studio space with ''Eyewitness News'', which moved to a street-side studio in 2010).
* NarratingTheObvious: Lisa, as usual, says that Snake's hair must be controlling Homer when she and Marge catch him trying to kill Bart. Marge impatiently cuts her off, [[LeaningOnTheFourthWall saying everyone will have already figured it out]].
* NonstandardPrescription: When Maggie starts growing tentacles they take her to see Dr. Hibbert.
-->'''Homer:''' Is there anything you can prescribe, doctor?\\
'''Dr. Hibbert:''' Fire! And lots of it!\\
'''Marge:''' Oh, that's your cure for everything.
* NoodleIncident: One of Snake's previous strikes was setting fire to a bus full of nuns. "That was totally in self-defense."
* NothingIsScarier: Played with, with Apu's murder. It [[GoryDiscretionShot cuts to outside the Kwik-E-Mart]] before Snake kills him, but during the news report the folowoing morning, Apu's legs are sticking out of the top of the squishee machine, implying he was stuffed into it.
* NotMyDriver: After fleeing from Itchy and Scratchy in Itchy's house, Bart and Lisa hop into a police cruiser and both think they are all right, right up until Lisa sees a patch on the seat that reads "To protect and sever". Cue an OhCrap when Itchy reveals himself in police uniform wielding a chainsaw.
* NoYou: Used to an unnerving effect when Snake!Homer kills Apu:
-->'''Apu''': ''Snake?!'' But you're dead!
-->'''Snake!Homer''': ''I know you are '''but what am I'''?'' (grabs Apu and shoves him into the Squishee machine)
* OhCrap:
** Apu hearing Snake's voice from Homer.
-->'''Apu:''' ''Snake?!'' But you're dead!
-->'''Snake!Homer:''' ''I know you are '''but what am I'''?''
-->(shoves Apu into the Squishee machine)
** Bart, when he realises Snake, after killing Apu and Moe, will come after him next.
** Bart in his bedroom when Homer is possessed by Snake, after Homer has just boarded up the door to prevent any murderers from getting in... or out.
** Bart again after Homer rips Snake's hair off his head, before it tries to smother him.
** Bart and Lisa when Itchy and Scratchy turn on them in Itchy's house.
** Bart and Lisa in the police cruiser when Itchy reveals himself with a chainsaw.
** Lisa, then Bart, when they see Itchy and Scratchy on the ground setting up electric traps for them to fall on.
** All of the Simpsons when Itchy and Scratchy break through the TV screen.
** Scratchy when Marge tells him he's going to be neutered. Coupled with a BigNo.
** The rest of the Simpsons when Maggie speaks in Kang's voice at the end.
* ParentalNeglect: On "The Jerry Springer Show", an audience member points out that if Kang is Maggie's father, he's definitely guilty of this, saying "If you're that baby's daddy, where you been at?" Kang is furious at this (Homer is pleased and applauds the question), and [[DisproportionateRetribution disintegrates her for it]].
* PiranhaProblem: Itchy shoots a swarm of piranha from a hose reducing everything below Bart's head to the bones, they later fix this by playing it backwards.
* PoliceAreUseless:
** Averted for the most part with Wiggum, Lou and Eddie. They arrest Snake and sentence him to the chair for smoking indoors and having three strikes, take over running the Kwik-E-Mart when Apu is murdered, try to arrest Homer when it looks like he's the murderer, and when Homer announces the hair is the culprit, they take it down pretty quickly.
** Played straight with Itchy and Scratchy, as they are actively trying to kill Bart and Lisa.
* PreMortemOneLiner:
** Snake before murdering Apu: "I know you are, but what am I?"
** Snake again before murdering Moe: "Shut your squeal hole, booze jockey. I'm gonna, like, totally waste you."
** Snake has a third one before attempting to murder Bart with a sledgehammer: "You are so dead."
* PunBasedTitle: "[[Music/EltonJohn Candle in the Wound]]" and "[[Film/StarshipTroopers Starship Poopers]]".
* RogerRabbitEffect: In "The Terror of Tiny Toon", when Bart and Lisa end up in "Live With Regis & Kathie Lee".
* RuleOfThree: Snake was executed because of the three strikes law, and there were three witnesses to his final arrest: Apu, Moe, and Bart. Also, as usual, the Treehouse of Horror had three stories.
* SpeedSex: In "Starship Poopers", after Kang shoots his insemination beam at Marge:
-->'''Kang''': Insemination complete.\\
'''Marge''': Really? That seemed awfully quick.\\
'''Kang''': What are you implying?\\
'''Marge''': Nothing, nothing.
* TheStinger: Regis Philbin exclaiming, "My eyes, my beautiful eyes!" during the Gracie Films card.
* StrippedToTheBone: Bart, below the neck, when Itchy and Scratchy send piranhas at him through a hose. Lisa restores his body by rewinding the action after they get out of the TV.
* ThreatBackfire: Kang and Kodos threatened to kill all of Washington's politicians if the Simpsons didn't give them Maggie. They dared them to try it, saying they couldn't possibly kill all of them...
* TookALevelInJerkass: Marge forbids Bart and Lisa from watching ''Itchy & Scratchy'' while taking out the batteries from the remote.
* TrappedInTVLand: Bart and Lisa end up in the television thanks to [[TimTaylorTechnology a nuclear powered remote control]].
* {{Understatement}}: Snake's line, "Yoink!", after pulling out Moe's heart with a corkscrew.
* VertigoEffect: When the Snake-possessed Homer says "I know you are, but what am I?" before murdering Apu.
* VillainsOutShopping: Literally. Before Snake lights up in the Kwik-E-Mart, he is looking to buy a comb.
* VisualPun: During Snake's execution within the "Hell Toupee" segment".
-->'''Chief Wiggum''': So long, Snake. You'll never harm anyone with your secondhand smoke ever again.
-->''(throws switch, Snake dies in rather violent fit)''
-->''(pitch-black smoke billows in droves from Snake's smoldering body, entering lungs of Ed [=McMahon=], the two showgirls, and Chief Wiggum. causing them to cough violently)''
* VoicesAreMental: When Homer is possessed by Snake's hair, he speaks in Snake's voice.
* WorstNewsJudgementEver: When Kent Brockman reports on Apu's murder.
-->'''Kent''': And the fluffy kitten played with that ball of string all through the night. On a lighter note, a Kwik-E-Mart clerk was brutally murdered last night.
* WouldHurtAChild:
** When Snake threatened Bart, he almost killed him when his hair possessed Homer, when he was trapped in Bart's room with him.
** Itchy and Scratchy turn on Bart and Lisa for laughing at Itchy using Scratchy's head as a jack-o-lantern.
* YouBastard: Itchy and Scratchy are distressed by Bart and Lisa amusement at their antics, [[EnemyMine and team up to kill them]].
* YourMom: In "Starship Poopers", Kang delivers one of these to Homer while on ''Series/TheJerrySpringerShow''.
--> '''Kang''': Well ''(bleep)'' you hyperbolic parabaloid ''(bleep)'' yo mama!