Trapper Keeper/Trivia

Trivia

 * The whole concept of sending someone to the past to get rid of a robotic enemy is a reference to the Terminator films.
 * When the trapper keeper fuses with Cartman it becomes a gigantic blob with his head this is a reference to the popular anime film Akira; also the soundtrack during the scene is similar to the music when Tetsuo becomes the blob. The scene where Rosie O'Donnell is crushed inside him is a parody of how Tetsuo accidentally killed his girlfriend.
 * The phrase "We are Trapper-Keepers" resembles the greeting of the Borg in Star Trek.
 * Mr. Garrison's B-story parodies the contentious United States presidential election of 2000 between George Bush and Al Gore.
 * VOTE IKE! is a reminder of Dwight 'Ike' Eisenhower.
 * The scene where Kyle is "floating" on the inside of the massive trapper keeper is an homage to HAL 9000 of the movie "2001: A Space Odyssey".
 * When Stan, Kyle, and Kenny are in Cartman's house and try to get into his room Cartman replaces the Dawson's creek song with his own melody; "Screw you guys screw you guys screw guys screw you guys".
 * Cartman says, "I don't know dude, I'm not supposed to have male friends that are over thirty; I kinda got screwed on that one" which is a reference to "Cartman Joins NAMBLA".

Kenny's Death
When the trapper keeper hybrids with Cartman, Kyle and Stan both call "not it!" to break down the door. When Kenny rushes the door, though, Trapper-Cartman smashes the door against the opposite wall, crushing Kenny in between.

Censorship

 * In the syndicated version, the brief shot of Mrs. Cartman having sex with the android known as "Bill Cosby" after the assimilated Cartman destroys the house is cut.
 * In syndication and all reruns of the episode, when "Bill Cosby" fades out of existence, he says "Look, I'm fading! It must've worked! I don't exist!" In the original broadcast, the robot is heard to say as he disappears, "Goodbye, humans! Oh God it hurts, it hurts!!!"