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An endearing term, stemming from the word "uncle", that describes an older male friend, mentor, counselor, guardian, or paternal-figure, whom demonstrates unconditional love and concern for the well-being of teenage knuckleheads and delinquent thugs. Originates in the Juvenile Detention System, San Francisco, California.
1) "Unk says NO."
2) You best listen up and keep it real, cause Unk gone tell you to HANDLE YO BIZNASS and get right with yo'self.
3) He always talk smack about your streetname and flirt with yo mama - but we love him cause he's Unk.
Unk by MyTherapistMySelf June 1, 2013
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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*
bad unk by Bad unk March 31, 2019
used when refering to crackheads in the D.C metro area.
lets go smash on some unks man.

lets throw some rocks at them unks sleepin at the bus stop son.
Usually refers to a crackhead; can also be used when talking to someone(not a crackhead) with crackhead characteristics or tendencies.
Ay son, this unk trying to sell me a PS2 for a dub. U trying to go half?

Man, why you throw away my carryout. Nigga you a unk.
unk by The real DeAndra September 30, 2005
Dr. Unk or one who is drunk... :)
Dr. Unk is a lush...
Dr. unk by Sailing_Gator June 8, 2009

Go way boi unk 

Go way boi unk before I call dickybird and the buvas.
Go way boi unk by FrayJoker December 26, 2018

Ba-unka-unk 

A ba-unka-unk is a girl that has a booty but no D's. Derived from Badunkadunk. Big booty no boobies.
Damn that chick is hot. Naw man shes a ba-unka-unk. I could rest a cup on that ba-unka-unk
Ba-unka-unk by Kevin V. & Nate J. January 4, 2009