A piece of string walks into a bar and orders a shot of vodka.
"We don't serve string here," the bartender said.
So the string left, walked around the block, and back into the bar where he ordered a shot of whiskey.
"I told you, we don't serve string here," the bartender repeated.
The string went outside, tousled up his hair and tied himself in half.
He went back into the bar and ordered a beer.
The bartender looked at the string and said, "Hey, aren't you that string that's been trying to order a drink all afternoon?"

"I'm a frayed knot," the string replied.