Fuck Knuckle 

A person who is equally a fuck head and who you want to plant your nuckel in.

Friend: Who's he
Me: Oh he's just some fuck knuckle
Friend: Wow what an idiot

Fuck Knuckle by ThiccyBoii March 20, 2017

Fuck Knuckle 

The painful bend in hard dick caused by pulling out too far and slamming your cock into the taint.

I was railing that bitch so hard I gave myself a fuck knuckle.

Fuck Knuckle by XxxKevinxxX August 19, 2007

Fuck Knuckle 

A dickhead who likes to invade everyones privacy and will happily eat cock whenever is possible. He/She talks too much and needs to be sent to South Africa to drop him/herself on his/her own head. They talk out their ass most of the time.

Look at Jackson, he's a Fuck Knuckle. Send him to India to eat rubbish. Pog.

Fuck Knuckle by Ol Meanings November 5, 2020

Fuck Knuckle 

Idiot, tool, moron, fool, useless bastard, politician

stop telling me what to do and sort the country out you fuck knuckle!

Fuck Knuckle by Englishdude January 30, 2010

fuck knuckle 

a fuck knuckle is like a dick knuckle or a fucktard
basically its a person that has the IQ of a swamp flea

dude ur a fuck knuckle shut the fuck up!!

fuck knuckle by toostr82bgay December 23, 2004

fuck knuckle 

a large mass around the penis. resulting from torn blood vessels when a penis is "broken" or bent while erect. often referred to as dick gristle.

he had a fuck knuckle in the middle of his penis.

fuck knuckle by Mrewood November 5, 2010

Fuck Knuckle 

Mary is a Fuck Knuckle

Fuck Knuckle by Fuck Knuckle September 13, 2003