sack whack

Striking a guy one in his testicles. Sack whack may refer to striking the testicles in several different ways including:-
- slapping
- tapping
- punching
- kicking
- elbowing
- twisting
- pinching
- backhanding

Sack whack is also known as:-
- Sack tapping
- Nut check (often said before the sack whack occurs)
- Nut tag
- Bag tag
- Bell flicking
- Roshambo, originating from 'Mecha Streisand', one of the earliest episodes of the American animated comedy cartoon, South Park .

'Sack' refers to the scrotum.

to be smacked in the scrotum very fast and very painfully.

a vicious frontal attack on one's genitals

wen sum1 whips sum1s royal jewels so hard that it causes the sad victim to cry in terrific agony, which caused the perpetrator to laugh in victory.
it also proves if u r homosexual: if u sack whack sum1 n get pleasure out of it u r officially gay.

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

Getting nailed in the junk. Ow.

Beating one's dick for pleasure, sometimes while fondling the sack.

The sack-whack is a sexual maneuver which is preformed mid-coitus between two, consenting or non-consenting individuals, with at least one of them (the receiver) being a male. The initiator (male or female) sits astride their partner (male) while receiving anal or vaginal penetration. When the initiator feels his/her partner is on the cusp of climaxing they will perform a quick, albeit sharp, open or closed handed strike against their partner’s scrotum. If performed correctly, this act will undoubtedly stave off the male’s orgasm and allow for a lengthier period of sexual stimulation for the initiator.