bucknuckle 

1: When your package shows through your pants meaning 1) your pants are too tight 2) your balls are too big 3) all of the above

2: The male version of a Camel Toe

Dude! Jesse's got a Bucknuckle

bucknuckle by Jesse James Mauck February 2, 2006

Bucknuckle 

1)huge bulge in your pants

or

2)a word used to decribe a retarted person who doesnt know what it means

1) wow, nice bucknuckle!

2) leslie, ur such a bucknuckle!

Bucknuckle by spoogler September 22, 2006

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

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

fucknuckle 

Similar to fuckhead, fuckwit, fuckstain

Fuck off Howard you pillow-biting fucknuckle

fucknuckle by Anonymous April 20, 2003

bumknuckle 

a completely useless person who is wasting my air, someone who is not retarded but acts that way

grant you are a bumknuckle on the ass of society

bumknuckle by paul March 17, 2004