String Joke (Yale)

Maybe it was cold, maybe it was that all the Yale students were away on Thanksgiving break, but no one seemed to be out. We'd wandered around for awhile and finally just happened to be stopped outside a bar talking to a guy having a smoke, when this guy pulled up on his Harley. You've probably heard the string joke before, but how often do you get to hear it from a guy sitting on a Harley?