a piece of rope walks into a bar and asks the bartender for a drink. the bartender says "sorry, we don't serve rope here". so the piece of rope leaves and walks into the next bar and asks the bartender for a drink. again, the bartender tells him "sorry, we don't serve rope here". by now the piece of rope is getting depressed but is determined to get a drink. so before he walks into the third bar, he twists himself into a pretzel and unravels himself at both ends and walks in. he asks the bartender for a drink. the bartender looks at him suspiciously and asks "aren't you a piece of rope?" the piece of rope smiles and says "no, i'm a frayed knot".