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 4, 2021

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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 August 4, 2015

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onb

simply means "one night blow" =

see that guy over there, he was an onb.

by sexyjbl June 9, 2009

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Onb

An abbreviation of on Budder originating in a cult worshiping budder(the way that most southern people say Butter) made up of several high school students. This means the same thing as Ong

Person 1: she’s fine af
Person 2: Onb bro

by Budder-boi June 29, 2023

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