alpaca smacka
Female donkey punch from the front. This is where, during missionary, the female will distract the male with sexy banter and then surprise the male with a right (or left) hook to the temple. This prolongs the experience and further arouses the female who is into rough play. The male will often be disoriented and have to concentrate extra hard on the task at hand.
Yo! Did you hear about the Craig Machine? He took home that bar skank last night and in mid plow, that chic full on Alpaca Smacka’ed him! Almost broke his orbital socket. Make fun of him the next time you see him.