Unk is a slang term for uncle in Australia, usually you say it to a friend in greeting. ‘Bad unk’ refers to a term used when someone isn’t afraid to do something that is outside of the box in order to impress the boys
Quinny - “hey lads, put through $500 in the pokes last night”
A few of the boys - “Quinny you bad unk”
*whilst smiling the boys get around his efforts*
A few of the boys - “Quinny you bad unk”
*whilst smiling the boys get around his efforts*
by Bad unk March 31, 2019
Get the bad unkmug. 
A ba-unka-unk is a girl that has a booty but no D's. Derived from Badunkadunk. Big booty no boobies.
by Kevin V. & Nate J. January 4, 2009
Get the Ba-unka-unkmug. by FrayJoker December 26, 2018
Get the Go way boi unkmug. 
A super-sized dangleberry that refuses to drop off a clump of arse hair for so long that it hardens and becomes almost impossible to remove.
by LastRealist January 13, 2025
Get the Unk nutmug.