Yep the person pulling the trigger is one hundred percent responsible for everything that bullet does till it stops.This goes against all firearms safety practices everywhere, and some hunting Safety and law practices.You've already got your answers from slot of these responses. All are valid and there is more that I won't go into cause there is no need. Stupid idea bottem line.
Most important though I'd worry about this, if that bullet hit or whizzed passed my head both guys, would be dead if I wasn't.
And I know There is more out there that feel the same way I do and would respond in the very same manner as me.