nutflap 

The leftover skin of the scrotum after a man gets his testicles removed, so the "flap" of skin from the "nut"sack.

"So how did Jim's surgery go?"
"They couldn't save his balls because of the impact of all those fish, so they had to settle with the nutflap."

nutflap by ReaCtioNz December 23, 2014

Nutflap 

A insult or a disease where one gets a flap in there nuts like a shark fin

Scott: “Oh I’ve got nutflap as the disease my doctor diagnosed me with it”
Jenson: “good you but face”

Nutflap by OOPLAH911 October 3, 2023

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

Napalm Nutslap 

When your partner uses a propane torch to rid your nutsack of pubes and slaps the fire out

There's nothing like a napalm nutslap to get primed for sexy times

Napalm Nutslap by Bozfelcher November 6, 2018

nut flap

to move your hips up and down in a humping motion so that your scrotum swings up and down giving the appearance of your "nuts flapping".

I saw robert in the hall today doing the nut flap.

nut flap by Alden aka Ginger July 28, 2008

nutslap 

the sounds your nuts make when slapping the ass of your partner during heightened sex

Also, a good term for someone you might already refer to as douchebag.

See douchebag

Your mom likes my nutslap

nutslap by jacobsack December 4, 2003