Nut Snapper 

When a girl is sucking you off or giving you a handjob, she grabs your ball sac and pulls down until your testicles are easily seen. She then proceeds to flick your balls and repetitively says, Yeah, Yeah, Yeah.

She gave me the old nut snapper so hard that I was red the next morning.

Nut Snapper by Jooooorman September 23, 2009

The Nut Slapper 

During January, there is a 30% chance of getting your nuts slapped in your sleep. The only way to possibly stop this is to cover your nuts with peanuts in your sleep to possibly make the nut slapper satisfied with an offering.

Oh man I got my nuts slapped by The Nut Slapper again!

The Nut Slapper by TheNutSlapper December 18, 2022

Nutslapper

A tremendously long bowl movement which, upon evacuating the rectum, falls forward, slapping the back of the scrotum before falling into the toilet.

Nate took a huge dump. One turd in particular was so long that it wound up being a nutslapper.

Nutslapper by thezfunk March 10, 2010

Atomic nutslapper

An Atomic Nutslapper is when you are getting head and your girl starts to punch your testicles like a boxer using a speed bag.

Person 1:Yo I heard you got head from Misty and she gave you an Atomic nutslapper
Person 2:Yeah my fucking testicles hurt bad

Atomic nutslapper by fuckcalebs November 24, 2019

A nutslapper 

A how that specifies her work in the testicular area of the male sexual organs

I couldn't really get that hard, she was a nutslapper

A nutslapper by The_commie_doggo February 25, 2019