What could i do to prank my brother at night?

ok, so this works when he's not around either, but, if he has white deodorant, but it only works with white, take a knife and peel about an inch off the top, then replace it with butter or cream cheese! When he goes to put deodorant on, he'll squish something gross into his armpit, and probably after a shower too! XP Also, you can't do this while he's asleep, but another good one is if he has a girlfriend, when he uses the home phone to call her, burp, fart, or make weird noises into another phone to embarrass him! :)