Fred: (after Arnold's been expelled) They've been trying to get rid of him for a long time!
Fred: Prejudice, that's why! Just because Arnold don't look like the rest of the kids, they're out to get him.
Oliver: Awww, that's absolutely ridiculous.
Fred: Oh is it? Then why are they always trying to bus him over to Crabwell Corners?
Oliver: Mr. Ziffel, Arnold is a pig.
Fred: Ahhh, there goes some more of that prejudice!