Knuckledump 

The term used to describe masturbating in a porta-shitter while in the field.

PVT 1: "Dude, we need to go back to the rear so I can get laid!"

PVT 2: "Why don't you just go to the shitter and take a knuckledump?

Knuckledump by SGT JPB January 5, 2011

knucklebumped a floater 

when one's aggressive ass-wiping causes him or her to forcefully strike the chocolaty log within the toilet bowl.

i was taking a behemoth dump on my break before i looked at my phone and saw that i had only one minute 'til punch in time. i was wiping so aggressively/quickly that i, accidentally, knucklebumped a floater.

knucklebumped a floater by todd beanfeather February 24, 2009

knuckledusters 

A form of hand-to-hand combat weaponary, that fits around a persons fingers, to increase the amount of damage created with a punch. These are usually metal.

John: "How come your face is cut?"
Mark: "Adam hit me with knuckledusters on."

knuckledusters by IKane June 13, 2006

kentucky knuckledunker 

A phrase used to describe "fingering" a female while driving through the state of Kentucky.

I gave her the good ole Kentucky KnuckleDunker on our way home from Nashville last week.

kentucky knuckledunker by JimBro Watty March 20, 2016

knuckleduster 

A british term for brass knuckles.

I hit him in the side of the face with my knuckleduster.

knuckleduster by Combat 84 June 28, 2004

Knuckledeep 

Pertaining to a situation when you are hot and heavy with a significant other and your fingers are "Knuckledeep" in their anal or vaginal opening

She was laid out on the bed and i was knuckledeep in her vagina when her sister walked in.

Knuckledeep by Charles Penguin March 4, 2008

knuckle dump 

Knuckle Dump:

Ejaculation through masturbation.

This girl was so dirty she asked for the old knuckle dump on the chin. The circus is in town people and there WILL be face painting.

knuckle dump by Kuric May 1, 2008