How much is too much?

ok i get to dress this guy up (who is also my crush) for one day at school. i get to dress him however i want but it has to be school appropriate (cant do crossdressing, bandanas, skimpy outfits, blood, etc.) i want it to be funny, not stupid, funny. how do i dress him? i dont want to do the opposite"goth to prep" thing or the "Jock to nerd" thing, something orig, funny, and easy. so how do i dress him?