I know you don't believe me now hoss but it's very unlikely at your age that even if he kicks your ass that he's realy going to hurt you. So as bdtr said just punch him square in the nose and leave all the other stuff for when the guy standing in front of you can do more damage than you can withstand. If your to scared, take a hay maker and pop him in the back of the ear when he's not looking. Thats the only way I was ever knocked out and my ear was ringing for a weak.