sac-tap 

To strike someone in the scrotum just forcefully enough to hurt him

My TA misgraded my test; I'm going to sac-tap that bitch.

sac-tap by My Compensatory Gift to Jon March 4, 2005

sac tap 

n. form: given. to give a sac tap.
a masculine tap given to fellow male teammates/friends in the genital area. the tap is fast and somewhat painful enough to consider it masculine. usually achieved when giver is walking by victim. (if not and giver waits for reaction, it is considered a foul and therefore the giver cannot pull off masculine facade) Hard to recover from with dignity. similar to football ass slap.

sac tap!(yelled while jokingly tapping another's genital area; other flinches and trys to recover by exclaiming "oh ho!")

sac tap by GangstaCrackaFresh January 25, 2005

sac tap 

a tap of the sac causing a fair amount of discomfort to a man, but found amusing in context by girls

aleeza found the word "sac tap" funny, but chris cringed in pain

sac tap by leoultron May 31, 2007

sac tap bitch 

A boy who is always sac tapped by his friends and others. Usually a sac tap bitch is too weak or pathetic to retaliate and is always on the defensive. As a result of being hit in the balls so many times, they can easily flinch like typical cowards and are very defensive, sometimes covering their crotch in order to preemptivevley defend themselves.

Tanner: What happened to Brent?
Robin: Oh, he just got sac tapped again.
Tanner: Seriously? What a sac tap bitch!

sac tap bitch by Elsis May 18, 2016

sac tap butt slap 

This is a truly humiliating attack one can do to a boy. It involves the simple act of hitting them in the balls, usually with a quick flick motion. When he is doubled over in pain it is followed by a painful slap on the ass. It’s a spanking they won’t forget and whoever does it is a badass.

Example 1
Jake: Why is everyone laughing at robin?
Tanner: Jordan attacked him. It was a sac tap butt slap
Jake: Damn!

Example 2
Brent was standing around minding his own business when Robin and Derek got him with a sac tap butt slap. Robin hit him in the balls, Derek slapped his ass. It was embarrassing for Brent.

sac tap butt slap by Elsis December 28, 2018

double sac tap 

Slapping another mans balls twice

I should give you a double sac tap just for saying that

double sac tap by csnuffy6 March 11, 2017

sac tapper 

Someone who is being a son of a bitch. Or an annoying asshole.

Seth stop being such a fuckin sac tapper, I told you I will get that shit for you later.

sac tapper by J-fro March 9, 2005