lmao, that is pretty dumb, no shit while I was in the army, I had soldiers that would do that stupid shit, and the funny part about that story is in the butt-stock of our M4's there was a spring and if for some-reason you safety got bump off, and you hit the butt-stock of the weapon on the ground it would actually fire, one day i took a M$ cause they didnt believe me and I took the safety off and pointed the rifle down range and I slapped the butt-stock and it fired. needless to say they never sat on the weapon like that again