This string walks into a bar, and the bartender immediately points him to the door saying, "We don't serve your kind here, you'll have to go somewhere else." The next night the string comes back, and the same thing. This goes on for a while, then finally the string ruffles up his "hair," twists himself up, and heads back to the bar.
The bartender asks, "How many times do I have to tell you? We don't serve your kind here, you are a string aren't you?" To which the string replied, "No sir, I'm a frayed knot."