White knuckler 

A women or girl who upon giving one a hand job, grabs and holds on for dear life. They grasp until their knuckles turn a faint tan or white color. In some extreme conditions, friction burns may result.

Wow, my penis is still recovering from that white knuckler!

White knuckler by Whoopdaddy January 18, 2012

White Knuckler 

When one has to shit so forcefully that it is required that one grips the top of the bathroom stall so tightly that your hands, and most notably your knuckles, turn white. Often accompanied by excessive groaning, tears,and, in truly tragic situations, blood. Happens when the body lacks water to a degree that your intestines are almost stopped up but can still be cleared with enough 'push'(not constipation, but just barely).

I assumed from all the grunting that the poor chap in the stall next to me is in for a white knuckler.

"Jesus Christ, you took a long time to shit" "Yeah, it was a white knuckler."

"That was my third white knuckler this week. I'm gonna have to start shotgunning prune juice before every meal or just start cutting cheese out of my diet."

White Knuckler by Panface420 September 10, 2015

White Knuckler 

When Victor grabs his penis and squeezes too tight, thus, causing his knuckles to turn white.

Victor is a white knuckler masturbater.

White Knuckler by Jokurtil August 6, 2019

White-knuckler 

When a handjob is so constricting that the white's of the person performing the jobs knuckles are visible.

Yo meng, I went out to dinner with this body building chick, and when we got in the car she gave me the most hateful white-knuckler.

White-knuckler by ritmer November 17, 2010

Great White Knuckler

Term that refers to the male hand while induldging in the act of self-pleasure. Such as masturbation.

So Dan, how was that ride on the Great White Knuckler last night.

Great White Knuckler by D. Brown January 11, 2005

kansas white knuckler 

when a chick is jerking you off and you shoot a load all over her knuckles

"man i shot the coolest kansas white knuckler the other day"

kansas white knuckler by 50187 July 28, 2006

White Knuckles

1) A terminology used to describe when someone is holding onto something extremely tight, due to a stressful or otherwise tense situation.

2) Also a synonym for someone feeling stressed, or tense about life.

"When we took that corner at 95, everyone in the car had white knuckles"

"You've had white knuckles since you got served with divorce papers, are you going to be ok?"

"We call him white knuckles, he stresses about EVERYTHING!"

White Knuckles by Capso March 9, 2010