a fucking stupid shithead asshole

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

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

Similar to fuckhead, fuckwit, fuckstain

A stupid or repungnant person. (20th cent origin - possibly Australian)

A person who is really annoying, basically a fun way of saying a dickhead.

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.