More comedy...
In college my roommate collected full cans of each different kind of beer. He was a weird guy, great really, but terribly anal about his stuff. So, of course we used to jack with him.
He liked all his stuff on his desk in a certain place, perfectly aligned, and would throw a fit if it was moved, accidentally or otherwise.
One day I drew lines around all that stuff on the desk with a pencil as a gag. He actually thought that was funny and practical and left it that way a long time.
One time however, I opened one of his single can 'collection' and drank it, then put it back. I swear, he got crazy mad, was gonna kick my ass, chased me like a quarter mile out the dorm and down the quad...