white knuckle tight 

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

white knuckle tight by datuna June 9, 2009

five knuckle shuffle 

The act of male masturbation.
See also wank, spanking the monkey.

"Johnny's mother caught him in the middle of a five knuckle shuffle."

five knuckle shuffle by YOREMA July 11, 2003

big knuckle 

1, n. Slang term for the head, specifically the top of the head when used in a headbutt. Obviously, it refers to the idea that if you punch with your knuckles, a headbutt uses one big knuckle.
2, v. To headbutt someone, aka "give 'em the big knuckle."

Did you see that? Zinedine Zidane just gave that dude the big knuckle!

Ooh, right to the face with the big knuckle! Looks like his skull knocked out a few of his opponent's teeth!

Good answer--that's using the big knuckle.

big knuckle by Talmanes December 25, 2006

Five Finger Knuckle Shuffle

Very funny term for masturbation.

"I'm so embarrassed, my mom caught me doin the five finger knuckle shuffle."

Five Finger Knuckle Shuffle by PSYCHO DANE September 17, 2008

Fuck Knuckle 

General dickhead. See also Fucker, Asshole, Cunt et al.

That's not my wife you stoopid fuck knucle!

Fuck Knuckle by Izzy Stewart April 8, 2003

shit stained thumb knuckle 

Its when you wipe your ass after a particularly filthy dump and you get a shit stain your thumb knuckle.

I was pleased to finally get the key to the executive wash room, however Stan Phillips was not pleases to see that I had a shit stained thumb knuckle when I shook his hand at the share holder meeting.

shit stained thumb knuckle by jim dandyy June 13, 2011

Fuck-Knuckle 

Brick-like intellegence coupled with new levels of arse-holiness.

My boss is a real fuck-knuckle

Fuck-Knuckle by morningwood faerie February 5, 2003