Me and my friends play a game called poo-dollar. Its not really a game, but you shit, take some of the poo, put it on a dollar, put the now poo dollar on the side-walk and watch.
Last year we got an RA, and as she picked it up we burst out laughing and yelling, she had no idea what was going on and put it in her pocket. We also got a professor who had visible shit on his hand. There have been many more victims, but thats all you need to know.