ONB

Old news B. Used to express disappointment in someone that posts something in a group chat that has already been reported. The “b” is just a term used to refer to a friend. It does not stand for anything.

Person 1: wow. Pistons just got the first overall pick in the lottery!
…. moments later…..
Person 2: Pistons just won the lottery!
Person 1: ONB
Person 2: Damn, b. You got me.

by DJRITM December 05, 2021

ONB

Outward Nose Breath.

This expression conveys humor in the same manner as LOL, but attempts to provide a more realistic representation of enjoyment considering that LOL is mis-used when one doesn't literally laugh out loud.

Nice meme you sent me Bob; it made me ONB.

by MDags July 14, 2015

onb

simply means "one night blow" =

see that guy over there, he was an onb.

by sexyjbl June 09, 2009

Onbe

Cool, mesmerizing, or impactful

Damn, that was so onbe of Timmy to give me his pet giraffe

by Cyrus Meier December 30, 2023

onb

on baby

that’s drip onb

by gryzl July 28, 2022

onb

similar to on god, “on bad”

“i hate when it’s raining.”
“onb”

by coddue June 14, 2024

onb

Short for "Obnoxious Nigger Behaviour"

"Jake is such an onb, always listening to shitty rap."

by onbkiller December 05, 2024