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1 definition by Whoopdaddy

 
1.
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!
by Whoopdaddy January 13, 2012
20 2