A string walks into a bar and orders a drink. Looking at the string, the bartender said, "Sorry, we don't serve strings."

"What? Well that $uck$," said the string. So the string walks into the bathroom and ties himself up and messes up his ends. A couple moments later he comes back out and approaches the bar again and again orders a drink.

"Hey, aren't you that string?" asks the bartender.

"Nope. I'm a frayed knot."