The act of violently moving the pelvic area in a thrusting motion inorder to clap the scrotum against the gluteal wall. It bears a strong resemblance to a clap with the hands.
by The Dude. October 24, 2008
When a man is fucking another man and they are going so hard their ballsacks are clapping together. Only straight on Tuesdays and if you have socks on.
Guy1: my balls hurt so much!
Guy2: why?
Guy1: I was sack clapping last night with my homie
Guy2: that’s gay
Guy1: I had socks on so it cancels out
Guy2: why?
Guy1: I was sack clapping last night with my homie
Guy2: that’s gay
Guy1: I had socks on so it cancels out
by Clapper tapper rapper February 28, 2019
When two guys fuck someone from behind and in the front and their balls clap together when they thrust forward.
by RouttMeister March 15, 2018