Invasion of the Yokel-Snatchers/References

Trivia

 * This is the first time urination is depicted in The Simpsons. An alien pees in the fountain before a security guard shows to stop him on which Homer was telling Bart about how guards are.
 * In the PS2 version, after Homer and Bart enter the Kwik-E-Mart, they are automatically attracted by the tractor beam. In the Xbox version, before going to the tractor beam, they must defeat three waves of lots of aliens, with the camera positioned on the top and the aliens getting nearer to Homer and Bart. This is like the arcade game .
 * Edna Krabappel can be seen inside one of the tubes in the probe room of the spaceship.
 * Inside the ship, there might appear a picture of Kang and Kodos in a reference to the All your base are belong to us meme. Also, both aliens are dressed exactly like the game character who said the phrase.