Scrotum Slap 

A slap on the underside of the testicles. Very painful very enjoyable.

I received a scrotum slap from Wallace.

Scrotum Slap by Alec April 25, 2005

Scrotum Slap 

For those kinky bastards with high pain tolerances, their gyal often perform this finishing move for an adrenaline rush in the nuts for an extra boost

Emily gave dave a scrotum slap and that got him rearing to go

Scrotum Slap by adamap03 September 21, 2019

Scrotum Slap 

After a long day of hot sweaty work, putting your hand down your pants and filling your palm w/sweat from your scrotum. Then with said sweat slapping somebody dear to you.

Yo man, I just got off work and I went up to Andrew and gave him a Scrotum Slap.

Scrotum Slap by James November 13, 2003

English Scrotum Slap 

A male dips their scrotum in tea and then furiously jabs their partner in the face with it. Then they stuff it in their partner's mouth cleaning the tea off of its surface. Then the male backs as far as they can go in the room then charges the women with their sack in one hand and facing outwards. When in contact with the women he tackles her and then begins to slap her across the face with his dry scrotum.

Simon gave Hannah a very sticky English Scrotum Slap

English Scrotum Slap by Wes1591 August 13, 2012

Slapping scrotums 

When a man inserts his penis into the rectum of another gentleman, the two scrotums (scrota?) come into contact. As the intercourse intensifies, the scrotums will make a distinctive slapping sound. Umm, at least that's what I've heard. I read about it once, honestly.

Buck: So are you and Carl dating or what?
Ned: Nah, we just slapped scrotums a few times.

Slapping scrotums by Trevor Alexander July 27, 2004