Have you ever come across a line of dialogue you find hilarious but can't quite put your finger on why it's so funny?

For me, it's when Fry says that he thought Hermes was an outer space potato man. It cracks me up every time. Is it just me, or is that line/the situation fucking hilarious? Anyone else crack up at this line? Normally I'm not one to enjoy "random" humor, maybe it's just the absurdity of it?