Answer:
A string walks into a bar, the bartender says "Hey! We don't serve your kind here!" so the string walks out and wravels himself up. He turns himself inside out all in knots, gets all dirty, and ruffles up his ends. He walks back into the bar and the bartender says "Hey! Aren't you that piece of string I just threw out a second ago?" and the string answered "Im Afraid Knot!"