Lived with two for two years. The only "prank" I did was hide with the lights off whenever one of them came home late, then scare the shit out of them. I'd get real damn creative with the hiding spots too. I did it so much that they'd literally walk in and demand I came out from where I was hiding, even when I wasn't home. They only pulled one prank on me, which was pouring a bucket of cold water and ice on me while I was in the shower.