Oh, it's bad joke time is it? Cool. This one cracks me up even though I know it's stupid. I think that's WHY it cracks me up.
So a piece of rope walks into a bar and the barkeep points to a sign that says, "We don't serve rope!" The piece of rope walks outside the bar and then gets a great idea. He ties himself into a knot and ruffles up his hair.
As he walks back into the bar the barkeep yells, "Hey! Aren't you that same rope I just kicked out of here?!"
To which the rope replies, "A frayed knot."