A string walked into a bar. The beertender yelled, "Hey you! Out! We don't serve strings here!" The string dejectedly exited, went outside and reached up to his head, ruffling the tips of his fibers and tattering them. He then went back into the bar."Hey!" growled the bartender. Aren't you that string I just threw out of here?"The string pointed to his messy top fibers and said, "Frayed knot!"