A rope goes into a bar, sits at the bar and orders a beer. The Bar tender look at him and says "we don't serve your kind in here. So the rope leaves the bar.
The next day the rope goes back into the bar and tries to order a beer. The bartender say "I told you we don't serve your kind in here, get out". So the rope leaves the bar again.
The following day, the rope is real thirst and really wants a beer. So he twists up into a tight loop and unravels himself at end. He then he goes back into the bar. He sit on a bar stool and orders a beer.
The bartender pours a beer, turns around and sets in down in front of the rope. He then stops and says "Hey aren't you that rope". To this the rope replies "Frayed Knot!"