Tree House of Horror II: A Simpsons Halloween - S3-E7
Trivia: During the opening, the tombstones the camera passes by read 'Bambi's Mom,' 'Jim Morrison,' 'Cajun Cooking,' 'Walt Disney,' and one that says 'Lose Weight Now, Ask Me How.' (00:00:45)
Tree House of Horror II: A Simpsons Halloween - S3-E7
Trivia: In the shot of the house during the opening credits, a group of trick-or-treaters walks past. This is the same group that goes trick-or-treating in "It's the Great Pumpkin, Charlie Brown" (1966).
Answer: Willy referred to an encounter he believed he had with actual aliens, while Wiggum thought he was referring to the arcade game.