Mayor of Imaginationland: "Hop aboard kids, I have something to show you." Butters: "Ahh, are you going to rape us?" Mayor of Imaginationland: "Ahh... No." Butters: "Oh alright then." Stan: "Come on guys." Butters: "Watch it fellas. I'm pretty sure this guy wants to rape us."
Butters thinks that the Mayor of Imaginationland wants to rape them when he gets them on his boat.