fuck up cunt
Australian slang, short for 'shut the fuck up you cunt'. More or less the same as any Australian slang with the word 'cunt' in it, it's meant to be used casually or by some dumbcunt to sound threatening.
Example:
Bazza: Stevo did you take my durries ya dumcunt?
Stevo: *on phone, doesn't give a shit*
Bazza: Oi mate I'm fuckin talkin to ya-
Stevo: FUCK UP CUNT! Git off ice, throw the first punch!
Bazza: Stevo did you take my durries ya dumcunt?
Stevo: *on phone, doesn't give a shit*
Bazza: Oi mate I'm fuckin talkin to ya-
Stevo: FUCK UP CUNT! Git off ice, throw the first punch!