The first guy said that he didn't get any fuss and had to eat bugs and worms. The second guy said that was nothing... he didn't have any bugs or worms to eat, so he had to eat his own shit. The first guy said, "No way! I don't believe that!" So the other guy out his hands in his pants and crapped a bit in his hand and ate his shit.

The first Army guy was stunned when he saw that. Just then, two Navy shipmen walked in the bar and the Army guy said, "Hey, let's bet those sailors $500 that you'll eat your own shit." So they made the bet with the sailors and the Army guy proceeds to get some shit out of his pants, but just as he's ready to eat it, he vomits all over the place.

The Army guys lose the bet, and the first Army guy is furious. "What the hell was that?!" he asked. "You just lost us $500! Why couldn't you eat your own shit?"

The other guy said, "Because there was a hair in it!"