The string

One day a string walked into a bar and ordered a beer. The bartender looked down at him and said, "We don't serve strings in here!" The string walked outside tied himself in a knot and freyed his ends. He walks back into the bar and orders another beer. The bartender looks down at him and sais, "Hey, aren't you the string I just kicked out of here?" The string looks up at him and sais, "I'm a freyed knot."