put a porno spread on a pull down map that you know you're gonna use in history/socials.
get an eclair (cream filled long john donut), take the whipping cream out, replace it with shaving cream, give it to someone. they'll take a bite and realize that they're an idiot, then u get the donut back. u then give it to someone else, saying that you're full and you don't want it any more, they will eat it, because they think that you've already taken a bite so obviously nothing bad has been done to it. classic.