A rope walked into a restaurant and ordered a milkshake. The waiter said "Are you a rope?" The rope said "Yes." The waiter said "We don't serve ropes." So, the rope went out and burnt off his ends and tied himself into a knot. The rope went back into the restaurant and ordered a milkshake. The waiter asked "Are you a rope?". The rope said "No, I'm a frayed knot."
