Three strings were walking down the street in 90-degree heat. They'd been complaining about how hot and thirsty there were when they came across a pub. One string said, "I'm going in and getting a beer." Another string said, "I doubt they'll serve you, you're a string." The string went in anyway and ordered a beer. The bartender said, "Hey, ain't you a string?" The string answered in the afirmative. Bartender said, "We don't serve strings in here, get out!" The string left and told his buddies what happened. The second string said, "I'm gonna try" and entered the bar and ordered a beer. The bartender again asked, "Ain't you a string?" The string said yes and got thrown out. He left and told his buddies what happened. The third string decided to try. But before entering the bar, he unraveled himself at both ends and tied himself around the middle. He walked into the bar and ordered a beer. The bartender asked, "Are you another string??!" The string shook his head and answered: "I'm a frayed knot."