aka tea bagging or chest humping;
a gamer term in First Person Shooters or 3rd person shooters when one crouches over anothers body repeatedly to give the immpression of humping their dead body; is usually used to mock one with a bad gamertag,who is camping or is just plain annoying. Often the players that sack-tap are the most annoying anyways.
1. "Dude, look at this gaywad's gamertag! Pannfle. I am gonna start sack-tapping the hell outta this bitch."
2. These kids are so gay. They keep sack-tapping me!
A trick played on a fellow athlete where the open hand smacks the target's testicles with the knuckles in a sharp, wrist flicking motion.
"Dude, I sack tapped Brandon, and now he has the whole team trying to sack tap me"
The sudden and random striking of a person's cock and balls with slight wrist action.
I sack tapped him so hard today that he fell down on the ground.
an action Steven Crowder asks you to do to him because he's totally not gay.
Steven Crowder : Hey you must Sack Tap me and keep it between us ;)
Male staffer : What the fuck
A form of play-fighting in which male friends gently tap each other on their testicles, not to injure, but to playfully tease each other for mutual amusement.
"Boys will be boys."
"What you mean?"
"Your boyfriend just gave mine a sack tap."
"Oh! Ha! I missed it. Boys will be boys..."
By far one of the gayest things you can do as a male.
Walking up, and touching another dude in the balls. Your gay. No way around it. Sack Tapping is for the gays.