The family comes in. Marge notices Matt Groening's signature at the bottom of the screen and wipes it off. A caricature of Matt Groening (complete with graying beard, glasses, and a tacky orange and yellow Hawaiian shirt) comes in and resigns the scene.
The family members (mostly) appear as they have in previous Halloween episodes: Homer is a jack-in-the-box (from II), Bart is a mutant fly (from VIII), Marge is a witch (also from VIII), and Maggie is an alien (from IX); Lisa, an ax murder victim (the only one not based on a previous episode), comments on the lackluster Halloween special hosted by Kang and Kodos ("What do aliens have to do with Halloween?"). Maggie yells, "Silence!" and blasts Lisa with her ray-gun..
The living room is set up like a trendy nightclub (complete with a disco ball, a velvet rope, three 20-something club hoppers, and a bouncer). The bouncer lets Marge, Lisa, Bart, and Maggie in, but sends Homer away.
The Simpsons sit on the couch and the wall spins around as seen in "Homer the Heretic." Instead of an empty couch, however, a Vincent Price-esque mad scientist and a shackled and scared Ned Flanders are on the other side of the wall.].
A crash test dummy version of the family sits. The couch slides forward and slams into the TV (simluating a car crash test), then pulls back into place. Crash test dummy Homer's head falls off from the trauma.
The Simpsons (save Maggie, who is in Marge's arms) are barefoot and briskly walking across a bed of hot coals. When the family sits on the couch, they prop their feet up, revealing their black and smoldering soles.
Marge, Bart, Lisa, and Maggie (dressed in jungle loincloths) swing into the room on a vine gracefully like Tarzan. Homer, however, swings by, fails to release the vine in time, and crashes offscreen like George of the Jungle.
Bart puts a whoopee cushion under Homer's spot. When the family sits down, Homer sits on it and triggers its farting sound. Homer grins sheepishly at Marge, Lisa, and Maggie (who are frowning) while Bart laughs.
The shot opens on the TV rather than the couch. The family runs in and freezes in mid-air. The camera pans around them in Matrix-style bullet-time. When the camera is angled on the couch, time resumes normally and they sit down without further incident.
A skating ramp is set up next to the couch. Marge (with Maggie in hand), Bart, and Lisa successfully do skateboard tricks off the ramp and onto the couch. Homer, however, falls off the ramp and, adding injury to insult, gets hit on the head with his own skateboard.
Santa’s Little Helper dances on his hind legs like Snoopy on The Charlie Brown Christmas Special while the popular "Peanuts" theme plays. When the family comes in, Santa’s Little Helper slowly stops dancing, sits on his hind legs, and barks.
A football is thrown in the center of the living room. The Simpsons, dressed as football players, tackle each other for the ball. Maggie squirms out with ball in hand, spikes it, and does a victory dance.
The couch is replaced by a valet parking spot. The Squeaky-Voiced Teen pushes a couch in place for the Simpsons to sit down. He then holds his hand out for a tip and leaves angrily when he doesn’t get it.
The Simpsons are in the simplistically drawn sailboat painting located behind the couch. They jump out of the painting by going in the "water". The living room is wet from the splash and Homer uses his finger to clean his ear out while clicking on the TV with the remote.
The Simpsons sit on the couch as normal. A crane game clamp comes down and picks up Homer. Homer screams, “Ow! My brain!” as he's being pulled out of frame. (Some later airings have Homer screaming in pain)
The family runs in to find the Blue Man Group performing on drums in front of the couch. Homer murmurs "What the-?!" (in reruns and repeats of this couch gag in other episodes, The Blue Man Group plays more aggressively and Homer's "What the--?!" is muted out)
Homer is on water skis, with the others on him, as he ski-jumps over sharks; everybody lands on the couch, but Homer is without his legs, which are in the sharks' mouths Homer doesn't notice (a reference to the term "jumped the shark", describing a TV show that has reached its peak and is now declining in quality or has done something to cause it to decline prematurely).
In a parody of the Macintosh paint program, Kid Pix, a mouse cursor drags Homer from the left side of the couch to the right, changes the wall color to green, and replaces the boat painting with the Mona Lisa. (Final couch gag to be traditionally animated)
The family sits on the couch. Homer clicks on the remote control and sends the family to the Stone Age, clicks it again to send them to the Roman Empire where they watch a gladiator match, and clicks it a final time to return them to the present.
In black and white, everyone is wearing early-20th-century clothing and is watching the TV from a girder at a construction site. (Done in the style of Charles C. Ebbets' photograph "Lunch Atop a Skyscraper.")
In a parody of Powers of Ten, the couch scene pans out until it reaches outer space, where the galaxies are replaced with atoms, which pan out until they reach Homer's head and then the couch scene again. Homer: Wooowwww.(reairings and repeats of the couch gag in other episodes redub "Wooowww" with "Cool!"or "Weird" and have Kang and Kodos laughing instead of staying silent)