onk 

the sound that a mammoth makes.

Genna-moo.
Meghan-Rawr.
Allie-Onk!

onk by omgxaxmommoth October 20, 2010

onk 

A sound roughly said like the noise a goose makes.

used when you have nothing else to say, usually a negative reply. see reh

"so did u see jacob tonight or what?" -"onk......maybe" =l

"dude ur not cool..". -"onk"

onk by JATZ May 29, 2004

onk 

Interjection used to describe an incorrect assumption or wrong answer

Yo, he be muggin at me thinkin he'll take my bitch? I was all "onk", ain't happenin.

onk by Roob August 19, 2003

onk  

someone who either acts like a pig or someone who has a little secret plan up their sleeve or someone who is keeping a secret... shhh......

Ella: she looks like she is keeping a secret... and she is being such a pig!

Lucy: yh... she does, she is such an onk

onk by eeerrrrrr smella??? January 23, 2009

onk 

slang word for fart or break wind

Have you just onked? I think I am gonna onk. It stinks in here someone has just onked.

onk by Al Castle October 5, 2007

Onk 

Onk is more collectively used as a suffix and can be added to names or words that contain the letter o. However, if done cleverly it can be added to any word or name, for instance “Jack” would become “Jonk” and “fuck” would become “fonk”.

“Hey, have you spoken to Jonk recently?”
“Nah dude, he’s totally fonked up our fronkship. We’re totally donk.”

Onk by whatheFONKdude May 31, 2019

onk 

when your friend(Victor) is a dumbass.

Victor you onk.

onk by saxmano September 16, 2019