Sure I love a good prank just as much as the next guy if not more, but you might want to think twice before you scare some people. It’s possible this kid grew up in a bad neighborhood and every time someone surprised him there was some kind of mugging or violent attack. On the plus side at least the kid wasn’t armed…

The kid actually threw a pretty good punch, nice rotation shoulders, he really got his weight into the swing. It looks like he had some formal training, or maybe he just grew up with brothers.