Three strings walked into a bar. The bartender told them he didn't serve strings and asked them to leave. Disappointed, the strings left the bar. All of a sudden one of the strings said, 'I bet I could get him to serve me!' The other two strings stood in disbelief as their fellow string tied himself into a knot and then frayed his ends. The disguised string marched back into the bar and ordered a drink. The bartender said, 'Hey, didn't I just throw you out of here?' And the string replied, 'I'm a frayed knot!'