Power bitchslap to the face. Must have a big windup and delivered with such force the intended targets head is snapped sideways. Usually handed out by a very pissed off person or big muscley beefcake. Sound of the slap can be heard down the street. Hard enough to pop eyeballs from the sockets and loosen teeth.
That was no ordinary bitchslap. That was a He-Man bitchslap.