A piece of string went into a bar to buy a drink.

The bartender says, "Get outta here, we don't serve drinks to string."

The string goes out and walks around the corner, where he ties a knot in his top part and makes the end all fuzzy.

The string goes back in the bar and orders a drink.

Bartender says, "Hey, aren't you that string I just threw out of here?"

"No, I'm a frayed knot."