Death of a 4 year old... Dho....

I was on our server today, testing XFire new feature. Video recording! I was not alone however, a friend was also online. He told me that it wasn't him at the controls, but his 4 year old. I promised to play fair, and went off to find him. There he was running around shooting at the ground. I followed him for a bit but at no point did he look up. How was I to attract his attention? I couldn't shoot the little tike? I know I'll make a sound, that's what I will do... It didn't go well...