A piece of string walks into a pub and asks for a pint.
The barkeep says “Get out. We don’t serve pieces of string here.”
The piece of string goes around the corner, ties a knot in his middle and unravels his ends. It
goes back into the bar and again asks for a pint.
The barkeep says “Are you the same piece of string that was in here a minute ago?”
The piece of string says “I’m a frayed knot.”