I'm A Frayed Knot

A rope walks into a bar and orders a drink. The bartender looks at him and says "Sorry we dont serve ropes here." So the rope disappointedly leaves, but returns later and again orders a drink. The bartender looks at him and repeats that they do not serve ropes. there.
So the rope goes outside, ties himself up and beats himself against a wall.
He then goes back into the bar and orders a drink.
The bartender looks at him and says "Arent you the rope who came in earlier?", and the rope says "No, I`m a frayed knot".