He doesn't. I was re enacting a scene from Disturbia, for my little brother who wanted to know about the movie. I visually showed him an "air punch" of what Shia's character did to his teacher. Unfortunately, Armada Starscream was in the way of my punch, and I cut my knuckles open on his wings. It didn't really hurt, I found it more funny that Starscream fought back. So Falcon Punch, does have a backfire.