Michael Phelps eats beef jerky and craps gunpowder. Then, he uses that gunpowder to make a bullet, which he uses to kill a cow and make more beef jerky. Some people refer to this as the "Circle of Life."
To me his winning that many medals doesnt make him the greatest, but the way he conducts himself. Even though everyone around him is talking crap coughfrenchcough, he lets his swimming do the talking and even though he is in a position where by all means he could talk just about as much crap as he wants.