When you flick the ball sack of your mate with a downward flick of your hand using the tips of the fingers.
by aussi guy June 1, 2011

by Tommy Bunz 69 March 13, 2022

Same as sack tap.
When you hit you bro in the testicles and then run away so you can still have kids.
When you hit you bro in the testicles and then run away so you can still have kids.
by Fambalam October 30, 2020

When you take your sock off, put soap in it and run around outside at midnight in the mud swinging at each others dicks.
by TheBopMaster August 19, 2016

The term used for hit by or ‘wacking’ someone’s testicles to induce extreme pain. You sack wack someone with an open palm and using a swinging motion in the upper arm.
by Narcho November 6, 2020
