when a man ejaculates but instead of shooting he only dribbles over his knuckles ... hence white knuckle.
friend: i had a great toss last night
mr a : really all i got was white knuckle
by mr lover luva June 7, 2009
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When someone sucks at everything but can't admit it to themselves and get angry at everyone trying to ruin specific peoples lives but fails at it. Especially when it comes to sex they are ALWAYS white knuckled
See that girl?
Yea
She's a white knuckle, don't talk to her! she'll make you regret it!
by CheetoMan January 16, 2012
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When a player puts all there weight forward to excell forward.
Look at #67 he has white knuckles, they are clearly going to run the ball.
by SafetyFirstSports April 19, 2015
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To jack-off so that when you cum it runs down your knuckles.
Josh- Yo dude my friend gave himself a white knuckle!
Doug- Aw dude wtf i dont fucking care.
by M3XiiCAN P0W3R February 29, 2008
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The act of running to the bathroom or wherever the tissues are with your pants around your ankles after masturbating.

Should have had the paper towels close by before you started, oh well.
Should have had the paper towels close by before I started, oh well I'll just have to do the white knuckle shuffle afterward.
by angry Dick March 21, 2011
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a common reference to the action and state of mind when one is either street racing in their automobile, or ont the track. the physical meaning is reference to the pigment of ones knuckles fading from holding the steering wheel tightly. the mental reference is due to the edgy state of mind one is in, when in a similar situation.
"One hundred plus through Black and White

War Horse, Warhead

Fuck 'Em Man, white knuckle tight

Through Black & White" -metallica
by datuna June 9, 2009
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The act of getting high by snorting cocaine placed on your knuckles.
Those knuckle-heads were on a white knuckle ride all night!
by chitsb January 25, 2011
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