A string walks into a bar and says "Bartender, bring me a beer."
The bartender looks at him and screams "Get out of my bar, we don't serve strings here!"
So the string gets up and starts to leave. As he's leaving he notices another string coming into the bar and says "Hey buddy, don't go in there. They don't serve strings here"
So the second string says "Oh yea, watch this." Right then he bends over, ties himself in a knot and ruffles up his one end. Then he walks in sits down at the bar and says "Bartender, bring me a beer!"
The bartender looks at him funny and says "Are you a string?"
The string replied "Nope, afraid not" (say it out loud)