That was funny. I have one from Fairy Idol. Its when Norm is singing Give Me A Wand. He accidentally says give me Wanda.
Cosmo: HEY! You'll wish you never said that!
Norm: Calm down. I don't even like Wanda. It was an accident.
Cosmo: You don't like Wanda? How can anybody not like Wanda? I'll kill you!
Timmy: Butch? Are you going to stop them?
Butch: No. This is to fun to watch. Want some popcorn?