Meet Antonio Inoki. He's a living legend in the world of Japanese wrestling. When I say wrestling I'm talking like WWE style not the stuff you see in the Olympics. From what I understand the video was filmed at an event promoting relations between Pakistan and Japan and Inoki was one of the speakers. Afterwards he offered his fans a chance to test their toughness and take a slap in the face. It might seem strange but all the people getting whacked seem to be enjoying it.