See above, other synonyms include:
Pattack (Penis attack)
Nut tap

Getting nailed in the junk. Ow.
see above
by Big Tim November 15, 2003
Get the sack whack mug.
Fondling your balls instead of actually fapping, to make it look like your just adjusting yourself.
If you whack your sack, you won’t get shit back.
by El ritardo June 25, 2018
Get the whack your sack mug.
another word for jimmy tap but much more vicious
"Hey, do you know what a jimmy sack whack is?" "No, what is it?" "I'll show you." "Oww, why'd you do that, now I'm not going to be able to have kids."
by Beegis June 23, 2006
Get the jimmy sack whack mug.
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!"
by Zenovia's Playa June 14, 2009
Get the Sack Whack on the Back Crack mug.
A whack to a guy’s sack
Mike- Hey Tyler.
Tyler- Yeah?
Mike- SACK WHACK!!
Tyler- OOOHHHHH!!!!!
Mike- HAHAHAHAHA
Tyler- Oh you think that’s funny, huh? DOUBLE SACK WHACK!!!
Mike- (High pitched groan in pain)
James- SACK WHACK (to Mike) AND DOUBLE SACK WHACK (to Tyler)
Tyler and Mike- I wanna die!!!
by ShamanViking September 9, 2020
Get the Sack whack mug.