Funkknuckle 

One who is a complete idiot and doesn't know it.

What a complete funkknuckle.

Funkknuckle by Doctor ploptus November 22, 2019

rusty fucknuckle

typically the second knuckle of your ring finger after finger fucking a womans tight puss with your pointer and middle fingers only; results from getting poo from her rectum hole on it

Celeste is great. First she slobbed my knob and gobbled the baby gravy then she licked my rusty fucknuckle clean of her week old ass mayo/ fudge stank combo. AND, I posted it on Youtube for all to see.

rusty fucknuckle by cornfritter April 14, 2011

fucknuckle 

a wanker, an idiot, a jack-off. technically someone who fucks their knuckle, i.e. their hand.

instead of calling someone "fuckin' wanker" or "jack-off", you might call them "fucknuckle" - quite offensive.

fucknuckle by Macalito January 29, 2006

fuckknuckle 

complete idiot

you know that fuckknuckle who got caught trying to break in to the police station

fuckknuckle by John June 10, 2003

funk knuckle

1: The smell resulting from anal fingering or from Mary Jane Rottencrotch.

2: Like a Boogan, etc.

1:"After having 3 in the pink and 1 in the stink, I had Funk Knuckle...so I gave Sara a Filthy Sanchez"

2: "John's being a Funk Knuckle"

funk knuckle by SuperFan January 14, 2007

fuckknuckled

a state of inebriation beyond the realms of drunkdom

i cant believe how much alcohol his consumed he's completely fuckknuckled

fuckknuckled by saint bert August 7, 2009

fucknuckle 

n.used to describe someone who is an arsehole or is very stupid. mainly used in australia and newzealand, as far as i know. a negative desription of said person.
similar to fucktard
the coupling of two english words fuck and knuckle

'john howard is a fucknuckle'
'yeah,what a fucknuckle'

fucknuckle by leader for the opposition October 25, 2006