In any sport, those who compete will seek to find an advantage on their competitors, even if it means they need to cheat to do so. And so the question of performance enhancing substances has come to the world of competitive eating. Tomorrow at the World Pie Eating Contest in Britain -- contestants will undergo random drug testing. Rather than the state fair, fruit-filled entries you're thinking of, this is the traditional meat pie concoctions. As for what constitutes cheating, Executive Presi