Everyone remember the one about the three pieces of string?

Three pieces of string came up to a bar. There was a sign reading "No String Allowed." The first piece of string decided to go in anyway. The bartender threw him out, yelling, "We don't serve string here!"
The second piece of string tried to get in, but the bartender threw him out, too.
The third piece of string rakishly ruffled up his end fringes and sauntered into the bar. "Hey!" said the bartender. "Aren't you a piece of string?"
"No," the third piece of string said. "I'm a frayed knot."