Knucklin 

A more aggressive version of fisting that results in g-spot or prostate contusions.

"Yo, bra, why's your hand in a cast?"
"I broke it knucklin' your mom last night."

-or-

"Why are you walking so messed up, were you riding a horse?"
"Naw man, I spent last night getting knuckled by 8 dudes and now my ass is broken like Angel's face from Fight Club."

Knucklin by n@sty n8 d0gg January 23, 2009

Knuckling one off 

When an fat dumpy lesbian beats herself off and since she's so fat she aggressively rubs her knuckles on her puss to get off

Patti couldn't get the job done with her dildo so she ended up knuckling one off on that big fat pussy

Knuckling one off by Bigdickballer420 July 25, 2017

knucklenuts

A trademark for an outrageously cool titanium ring

I'm getting me one of those KNUCKLENUTS rings!

knucklenuts by Ti Nuts September 28, 2006

white knuckling 

When you're taking a situation as it comes and flying by the seat of your pants. Often attributed to anxiety, and feelings either good or bad. A reference to clinging fiercely to something, such as a rope, to the point where ones knuckles would turn white from forcing blood from the capillaries.

Jesus, I'm sweating, I was white knuckling my way through that interview. Those guys are scary.

white knuckling by Markus J October 14, 2008

knucklenuts

A trademark for an outrageously cool titanium ring! Go to knucklenuts.com.

I'm getting me one of those KNUCKLENUTS rings!

knucklenuts by Ti Nuts September 21, 2008

CORN KNUCKLING 

Slang for fisting one up the ass.

When we got back to my place I asked her if she would be interested in some corn knuckling.... she said yes.

CORN KNUCKLING by baugh May 30, 2004

dick knuckling 

1. The use of the knuckles during masturbation

2. A tactic used for catching trout

1. I caught joseph dick knuckling in the cafeteria at school last week.

2. I caught a 6 pound trout over the weekend while dick knuckling.

dick knuckling by ole dick knuckler April 29, 2010