a penguin walks into a bar, page-23

Two pieces of string walk into a bar and the bar tender says, "Sorry felas, we don't serve pieces of string here, I'm afraid you'll have to leave."

So the pieces of string walk out. They were desperate for a beer so they decided to tie themselves together and ruffle their ends up. They then walked into the bar. The bar tender said, "Hey, didn't I just throw you two pieces of string out?" to which they replied, "We're a freyed knot."