Rope walks into a bar. Bartended says, "Hey! Didn't you read the sign? No ropes allowed! Get outta here!"
With a huff, the rope storms out, frays both of his ends, and ties himself in a knot. Then he marches right back into the bar.
"Hey! Ain't you that rope that was just in here a minute ago?!"
"Nope. I'm a frayed knot."