The String in a Bar

A piece of string walks into a bar and orders his drink. But the barman looks at him and says "I cant serve you!" "Why not?" says the string. "Cos you're a piece string". So the string goes off in a huff. He decides to come back later. But it's the same barman at the bar, who repeats: "I can't serve you, you're a piece of string" "Bah" thinks the string, getting really worked up. He storms out of the bar and wanders the street. Its raining and he gets all tatty and dirty, a real mess. At last, just in time for last orders, he decides to give the bar one last shot. He walks in and the same barman is there, eyeing him suspiciously. "Aren't you that piece of string I threw out earlier?" he demands "No, I'm afraid not!"