It was the Anthrax tour in 1988. A fun time. You were constantly teasing each other at every opportunity, kicking each other's asses and generally making fun of your bandmates. One day you go up to your room and see Scott and Frank coming out, giggling stupidly. They run away as soon as they see you.

You go into your room and oh my god! It stinks! It's coming from the bin. Apparently Scott or Frank took a shit in your bin. A typical prank - take a shit in the bin, turn the radiators up to maximum and get a terrible smell. You run out into the hallway in anger and see Scott there, who was obviously standing there watching your reaction.