karate chopping your laptop

I was chillin in the living room with my dad, sister and cousin watching the game this evening and everything was fine UNTIL I accidentally karate chopped my laptop computer screen!! -_-yyyeaaahhh.  If you don't know my cousins and me, when we're together we're a bunch of shoving, slapping psychos sometimes. Today, my cousin and I were annoying each other waving our arms and hands in front of each others faces. At one point I was trying to resist my cousin's arm away from my face with great force THEN she let go and I KARATE CHOPPED MY LAPTOP! the end. Now, it's swelling and there's a bump forming on the side of my left hand.lesson learned. play nice... or not lol