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##"

!!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: The three strikes Snake was executed for were: [[BurnTheOrphanage setting fire at an orphanage]]; blowing up a [[BusFullOfInnocents busful of nuns]] (which Snake declares [[BlatantLies was in self-defense]]); and smoking at a 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.
* 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.
* BondOneLiner: After shooting Snake's hair:
-->'''Wiggum:''' Now that's what I call a bad hair day.\\
''([[EverybodyLaughsEnding Everyone in the room laughs]])''\\
'''Marge:''' May I remind you that two people are dead, and... [[LateToThePunchline Oh, wait, I just got it!]] ''(joins in on the laughter)''
* CaptainObvious:
-->'''Lisa''': Of course, the transplant! Somehow Snake's hair must be controlling--\\
'''Marge''': [[LampshadeHanging Oh, please, Lis, everyone's already figured that out.]]
* ChairmanOfTheBrawl: As with the Jerry Springer show, Kang wields chairs during his brawl with Homer.
* ClusterBleepBomb: The unsurprising result of the family's appearance on Jerry Springer.
** PrecisionFStrike
-->'''Marge''': I am so ''(bleep)''ing embarressed...
* CueCardPause:
-->'''Krusty:''' 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.
* DisproportionateRetribution: Because ''one'' audience member called out Kang for being a deadbeat father, he kills the entire Jerry Springer audience.
* EvilLaughter: Maggie, of all characters.
* 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.
* 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.)''
* ForHalloweenIAmGoingAsMyself: Marge asks Homer if he dressed up as a hobo again for Halloween but he actually had no intention to do so and was just unkempt as usual.
* GoryDiscretionShot: During Apu's murder.
* 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 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 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 leave a mark.
* 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).
* 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."
* OhCrap: Apu hearing Snake's voice from Homer.
-->'''Apu:''' Snake? But you're dead!
-->'''Homer/Snake:''' I know you are, but what am I?
-->(''shoves Apu into the Squishee machine'')
* 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.
* 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. 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.
* ThreatBackfire: Kang and Kudos 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...
* TrappedInTVLand: Bart and Lisa end up in the television thanks to [[TimTaylorTechnology a nuclear powered remote control]].
* VertigoEffect: When the Snake-possessed Homer says "I know you are, but what am I?" before murdering Apu.
* 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.)''
* 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.
* 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!