Poopatine, Fanboy and others in “The Janitor's Apprentice”

Oh, Brenda, stop being so dramatic. They're not replacing you. I'm just teaching them a lesson. Whoa! [falls into the floor which is covered in peanut butter] What are you doing?

Everyone knows the best way to get out ketchup is with peanut butter. Or is it soapy water?

[growls] STOP THIS AT ONCE!

Hold off on the peanut butter, chum.

[on the roof of the cafeteria] Boy, this peanut butter really sticks to the roof of your school.

I see you have failed. Perhaps I can find another task better suited to your feeble skills.