The Snack Pack Sack Attack is quite simply, the result of a young man dipping his testicular sack (ball sack) into a snack pack (pudding), preferably tapioca (for the joy of texture), and then dipping that sack into a young womens mouth (teabag)
ball sack + snack pack + teabag = YES
"Hey remember that time when little Billypassed out in the locker room and Coach Sourbee snack pack sack attacked his ass??"
"yeah, I heard they pressed charges or something"
When your colleague or supervisor sneaks up behind you and stands so close to you while you're seated at your desk, that their balls are resting on your shoulder and you don't notice
The assault of one's testicles from behind. Generally, the victim is bent over, however a standing attack up the legs is also commonplace.
Often times, the assailant will yell "back sack attack!" either at contact, or after the strike is complete.
Winding up for a kick, Ben positioned himself behind a bent-over Matt. Using mostly the flick of his foot unto the scrotum, Ben yelled "Back sack attack!" before Matt ever got the chance to react. Devolving into his fetal position, Matt sat writhing in pain.