Three strings walk into a bar and sit down at a table. The first string walks up to the bartender and says, "Bartender, three beers please." The bartender looks at the string and says, "I'm sorry, but we don't serve strings here." Disappointed, the string walks back to his buddies and explains. The second string says "No problem, I'll go get our beers." The second string walks up to the bartender, "Bartender, three beers please." The bartender says, "Listen man, I told your buddy that we don't serve strings here." Empty handed, the second string walks back to his buddies. The third string says, "No problem. Tie me in a knot at one end and fray my ends at the other." He struts up to the bartender, "Bartender, three beers please." The bartender proceeds to get him the beer when he suspiciously turns to look at the string and says, "Excuse me, but are you a string?" The string replies, "I'm a frayed knot!"