Definitions by Ballsack Stalin

Sack slap 

1) The act of rubbbing the sweat off of your own testicals and proceeding to smack the nearest individual in the face

2) when one man randomly decides to smack a mans ballsack in the middle of Lunch

'Slap'
TIM- Ahh what was that for, man?
HENRY- Dude, You just got sack slapped!

Sack slap by Ballsack Stalin August 8, 2009