The bartender says, “sorry, we don’t serve ropes here.”
The rope walks into the bathroom, ties himself up, messes up his hair, and walks back to the bar to try again.
The bartender says “hey aren’t you that rope from earlier?”
The rope says “Sorry, I’m afraid not.”
Should’ve spelt it “a frayed knot” because the pronunciation conveys the pun just fine. Plus, it makes more sense when written.