o boi! 

excitement of the unknown *wink wink* ;]

gary: wat r we gonna do tonight ?

ana: thats for me to know n u to find out(:

gary: o boi!

o boi! by Garyana October 25, 2008

o boi

A term used to define a pal or bro.

First seen in the lyrics of “Love Sosa” by Chief Keef

Sup “O boi”

o boi by Lazy69420 March 5, 2018

boi-o 

A boi-o is a close friend that is down with all the memes and is kind of a hypebeast

A good way to greet them is to say,"Hoi o , boi-o."

Me: Hoi o, boi-o
Friend: "what's up my guy, I just got back from the supreme store."
Me: lit

"Wat's popping boi-o."
"Nothing much, I just copped that new supreme Tee though."

boi-o by Raspofin September 3, 2018

boi-o 

A boi-o Is the condescending and/or patronizing way you refer to a Male or Boy when they're upto mischief, strictly to assert dominance in a passive aggressive tone.

Senior Male: "OI YOU GET BACK HERE WITH THAT LADIES PURSE BOI-O!"
Dweeb Teenager: "Get fucked ya cunt"

boi-o by maddog219 September 2, 2019

Oboi 

A well known map maker in the simple .io game, Krunker.

Various Rainbow Six Seige maps have been published by this mapper.

Wow, this map is poggers, who made it?

It must have been Oboi.

Oboi by Noboi82 January 23, 2021