Proof that I really would blind myself

So I was lying on the couch checking email and resting my head on my arm. I didn't realize it, but the arm with my head on it started to fall asleep. When I picked my head up off my hand, I had no feeling in my arm and thus no control. My arm flailed around and before I could stop it, I punched myself in the eye. My arm even swung back and then at me, so it got some momentum before hitting me. Like it was trying to hurt me.