User blog comment:PoptartPlus/Recolors/@comment-2077777-20110406000129/@comment-3188056-20110406001436

I learned that when i was sparring this one kid at karate and he tried to do a spin hook kick on me and when his back was turned i hit him in the back of the head and my sensei told me that if you punch someone in the back of the head they can be knocked out easily