The act of messing around with a friend or room mate, causing trouble for them in usually unnecessary ways for your own personal enjoyment and their personal torment.
Girl: There's no reason to get too jealous...I'm pretty sure you know him, anyway...Jewish, smart, funny, eyes that vary color from sea green to hazel...sound familiar? ;-)
Girl's male room mate: Woody Allen? Sorry, I need to get in on the room mate dickeries, I never had a chance with any of my past room mates :P