Grandson Choking Controller At Play

When I walked into my grandson's bedroom last evening, I was horrified, he was having a seizure and my heart fell to the bottom of my chest. But he noticed and greeted me with a grin, lots of teeth and continued playing his game.

I'm telling you, he had a choke hold on the controller for his PS3  shaking it back and forth like he was seizing. Turns out he was choking someone on the screen, killing him and banging his head on the wall behind him. I was very concerned, even considered calling...