A rope walks into a bar, sits down, orders a drink. The bartender says, "Hey buddy, we don't serve ropes here."
Dejected, the rope leaves. Outside he ties himself into a knot, tousles his hair, and walks back into the bar. The bartender stops him and says, "Hey! Aren't you that rope I just sent out of here?"
To which the rope replies, "I am a frayed knot."