second knuckle deep 

When a person inserts the finger into the caboose till the second knuckle is hidden by the rim.

Chris goes second knuckle deep while wiping his ass, not on accident.

second knuckle deep by bigdaddyln June 10, 2008

smelly knuckle 

a synonym for digital sex, or "fingering" a girl

dude did you get much smelly knuckle at the dance lasty?

smelly knuckle by andy russo June 3, 2007

portuguese knuckle 

Sexual maneuver administered as a punch to the female genitalia, where the pinky knuckle and the pointer knuckle find contact with the anus and vagina, respectively (general delivery has been described as "Mike Tyson with a swerve").

Things were going great, but then I screamed 'harder!' and he gave me the Portuguese Knuckle!

portuguese knuckle by Carl Johnson Weathers December 26, 2010

knocking air knuckle 

aka KAK - Knocking Air Knuckle, used in conjunction with SKEECOO SKEECOO. A simple, but effective visual using one hand in the air in a motion that looks like knocking on a door. For an incredible effect, try a double knocking air knuckle. Wow, that would be something!

"I told Franny I would go over her house after work, but I'm not really diggin on her any more. I never go back on my word though, so I went over alright and gave her door the ol' knocking air knuckle and then busted outta there!"

knocking air knuckle by NookieJar October 16, 2009

knuckle dragger 

a slang term for a snowboarder

So, are you a knuckle dragger or a two planker?

knuckle dragger by abnorm December 28, 2005

Pearl Knuckleduster 

When a man ejaculates onto his first before punching his partner in the face with the be-seamened hand!

The bitch was complaining about my rough treatment of her, so I gave her the ol' pearl knuckleduster!

Pearl Knuckleduster by boofstien May 31, 2012

Great White Knuckler

Term that refers to the male hand while induldging in the act of self-pleasure. Such as masturbation.

So Dan, how was that ride on the Great White Knuckler last night.

Great White Knuckler by D. Brown January 11, 2005