A rope walks into a bar. Bartender says "Hey buddy, we don't serve rope here."

The rope goes into a nearby alleyway. He pulls his threads apart, turns himself into a loop and makes a knot with the loosed threads sticking out. Walks back into the bar. Sits down.

Bartender eyes him suspiciously. "Say, aren't you that piece of rope that was just in here a minute ago?"

Rope says "No, I'm afraid not."