Random
Source Code
Random
The act of stroking one's penis with such vigorous strength and aggression that it causes one's knuckles to turn white.
Bro, it's been so long since my girl let me hit that I had to give myself the ol' white knuckle monkey fist.
When you grab yo shit so hard while strokin' it your knuckles turn white
"Yo bro I was White Knuckling it last night."