Fucknuckle

When someone is a damn fucking idiot. (Typically used in Australia)

Jimmy: Can Pigs Fly?
Kyle: You absolute fucknuckle!

by Aussiebummer69 July 14, 2016

Fucknuckle

An idiot who digs (looks) into things that should not be dug (looked) into, only to find out they're wrong about why they went in search and also in what they found.

Stupid Fucknuckle got it wrong!

by Aj Harvey May 17, 2008

Fucknuckle

to screw something up.

Whenever chet works on his bike he always pulls a fucknuckle.

by Dick Fitzwell July 12, 2004

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.

by cornfritter April 14, 2011

oh fucknuckle

When a person is mad and wants to say fuck in front of a Karen or Karen's child

man: Oh fucknuckle!
Child:Huh?

by 😩✌ ah May 26, 2021

Fucknuckle

Someone who is incapable of being a normal human fucking being.

Daniel is a fucknuckle

by AussieFuckhead September 2, 2020

Fucknuckle

A person, often a jockey at a picnic race meeting, say Bong Bong for instance, who, in the process of winning the first race is also charged with careless riding and receives a lengthy suspension, is also caught by the Stewards using their mobile phone on-course, then injures their toe during the final race on the card and lastly fails to ride their mount out to the post. They are definitely a fucknuckle of the highest order.

What a fucknuckle that bloody useless picnic jockey was at Bong Bong last Friday.

by Chief Steward November 29, 2023