Anaheim Knuckle-Buster 

To cum on your fist and punch someone in their face.

Tom gave Nikki the Anaheim Knuckle-Buster and that bitch was out cold for the rest of the night.

Anaheim Knuckle-Buster by marco914 April 26, 2006

bowie knuckle 

Much like the movie, The Labyrinth, a "bowie knuckle" is an apple-sized lump in the male anatomy protruding in the groinal region. Particularly emphasised by tight spandex pants, or jeans. See also pud.

Girl: That guy had the hugest Bowie Knuckle I've ever seen!

bowie knuckle by Matthew Marvin July 22, 2007

Crimson knuckle-fuck 

The act of fisting a girl when she's on her period.

I gave the missus a crimson knuckle-fuck last night.... it got messy.

Crimson knuckle-fuck by L1feLus7 April 1, 2009

pork knuckle 

The male version of the camel toe.

When Jeff wore his tight pants, a pork knuckle was clearly evident.

pork knuckle by Forbesy1242 January 18, 2008

Mud Knuckle 

After taking a poop the average human, chooses to wipe the anus to remove any left over excrement. When in the wiping process if on discovers that fecal matter is left on a finger, he/she has been mud knuckled.

i had some taco bell yesturday, ive been crapping all day, sloppy ones too, i even got mud knuckle it was so bad.

Mud Knuckle by mike lea January 19, 2005

Fuck Knuckle 

Similar to definition 1 for Fuck Nuts
Specifically a name for somebody you know and despise in one way or another.

"Have you met Wendy's new boyfriend Eric? Man, what a fuck knuckle that guy is!"

Fuck Knuckle by Simonator May 15, 2006

moose knuckle 

The bump or bulge seen when a man wears tight pants.

"Is that a moose knuckle I see; or do you have a raisin in your pants?"

moose knuckle by the dude1963 April 20, 2013