Short for "Obnoxious Nigger Behaviour"
"Jake is such an onb, always listening to shitty rap."
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
On Bob. For when you want to put something on Bob.
"I mean it, onb!"
"Who's Bob?"
"Bob"
Cool, mesmerizing, or impactful
Damn, that was so onbe of Timmy to give me his pet giraffe