From the old Our Gang show where the little boys hated the little girls and would not allow them into the club. A modern day version is any group of men who love to hate and hate to love the females. HMWH are not gay, just can't stand the BS that females offer. Another example is Al Bundy's NO MA'AM Club.
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.