I had a plebe (freshman) in my company at USNA who did the faceplant thing...Right onto her bayonet while in a parade formation. It went in one part of her cheek, slid under the skin, and the point came out again. We removed the rifle the bayonet was attached to, ace bandaged the whole thing, and carted her off to a waiting ambulance. All without getting a drop of blood on my whites, mind you.
You can generally tell who actually falls out and who's just a candyass, because the ones who aren't faking just fall forward, without going to their knees first. Unless, of course, they hit their bayonet first.