Krusty Gets Kancelled - S4-E22
Anthony Kiedis: You told our agent this place holds 30,000 people.
Moe: It does. We had 30,000 here last night. Now play, the audience is getting restless.
Barney: We want Chilly Willy! We want Chilly Willy!
Bart: Hey, Red Hot Chili Peppers, would you guys like to appear on a Krusty the Clown special?
Flea: Sure, if you can get us out of this gig.
Bart: No problemo. Hey Moe, look over there.
Moe: [Turns around and looks at the wall.] What? What am I looking at? I don't see nothin'. [Bart sneaks the Red Hot Chili Peppers out of the bar.] I'm gonna stop lookin' soon. What? What, is that it?
Homer: Hey Moe, can I look too?
Moe: Sure, but it'll cost you.
Homer: My wallet's in the car.
Moe: He is so stupid. And now back to the wall.
Answer: Willy referred to an encounter he believed he had with actual aliens, while Wiggum thought he was referring to the arcade game.