There once was a man called Johnny that lost one of his testicles in war so people called him Johnny one ball. So Johnny made a promise to himself that the next person that called him Johnny one ball he would shag until they died. So while walking down the street a blonde shouted out "well Johnny one ball" so Johnny went over and shagged her until she died. The next day on his way to the shop a brunette shouted out " well Johnny one ball" so he went over and shagged her and shagged her but she wouldn't die. So what's the moral of the story? You can't kill two birds with one stone.