The act of thrusting the man junk so far into a woman's (or man's if you are homosexual) anus multiple times that the balls consistently slap against the " host's butt cheeks making a sound like a great high five

KirtKanReed: "i am soo hungover bro, i can't remember anything about last night ."ChadKant: "you wouldn't want to."Zenovia's Playa: " YEAH! BECAUSE CHAD GAVE YOU THE sack whack on the back crack WHILE YOU WERE SHIT FACED DRUNK LAST NIGHT AND PASSED OUT ON THE COUCH!"