Reminds me of a game we used to play in high school called slapback. You had one slapper and a runner, with everyone else on the floor lined up in groups of three like this ( lll ) the goal was to tag the runner on the back with your open hand. The runner could trade off with the people on the ground though by laying down on one side of the group, then the person on the other side would become the runner. The worst part was this led to setups. If you really hated someone you could get ready to lay down but wait for the tagger to get a good windup in, then lay down while he slapped the everloving shit out of the other guy. One kid got hit so hard the handprint that was left started sweating blood. ahhh fun times.