Russia is a crazy place, almost crazy enough to make you want to shoot your good friend right in the head. Oh wait, this is exactly what these young gentleman did. At least one guy was wearing a helmet though - and doesn't appear to be dead after taking the shot straight at his skull. But still, probably not the best thing to do on a regular basis. It's not an exact science, like setting yourself on fire or jumping off a building. Or, setting yourself on fire and jumping off a building. That's a pretty safe thing to do. Russia, it's all about safety.
He fires the gun and the bullet goes into the other man.