Ever hit someone really hard in the head before? The noise is really loud in most cases. Funny thing is that I have hit someone in the face with a large beer can just like he did.... the guy is lucky it was a larger can and not a smaller Coke can, because when you hit someone with a smaller one the crease on the bottom of the can does a whole lot of damage. I don't the guy that hit him with the can wanted to hurt him, only stop him. Hopefully the white gut learned his lesson.