Frayed Knot

Two pieces of string walk into a bar.

They sit down, and the bartender walks over. "Sorry fellas, we don't serve string in this bar." "What do you mean you don't serve string?" one asks. The bartender points to the sign on the wall. "Sorry guys, house rules. Nothing I can do." The two strings, dejected, walk outside and sit on the curb. One piece of string gets an idea. "Follow my lead," he says. He reaches up, ties his head in a knot, and messes up his ends. "Come on, let's go back inside," he says. They walk in, sit at the bar, and the string says, "Bartender, two beers please." The bartender looks over and says, "Hey, aren't you the same piece of string that was just in here?" The string points to his head and says, "Nope, I'm a frayed knot."