Sack Vac Share definition Flag While sleeping, a guys scrotum suctions to his anus and creates a vacuum causing him to snore. I couldnt sleep last night because my husband's sack vac was was on full blast. Sack Vac by lebbie coone April 12, 2014 0 0 Get merch Get the Sack Vac mug. Buy Now — $32.95 See more merch