og 

being an original gangsta

we da true og's
I graduated out the streets, I'ma real O.G (T.I. you dont know me)

og by rachel May 13, 2005

OG 

OG means old guy or old grampa

Man that dude looks og.
Dude your dad is such an og.

OG by Alpha Fire March 17, 2019

OG 

"Old Girl" or "Old Girls".

Mostly in girl geek circles used to say doing something the old way (how the girl geeks did it) or talking about older geek woman/women.

"We should try and save this show the OG way."
"There is a lot of OG Star Trek fans here."

OG by silvercatmon May 29, 2023

OG 

Original

I got these og jordans

OG by Gilly u April 1, 2016

OG 

Original or Old Gangsta,
You have to be in a gang
Have a rep
And have been to jail or killed someone

"I'm back from the slammer striaght up OG now!"

OG by Shaw Shank January 1, 2006

og 

1) Orange Gatorade
2) Original Gangsta

"Hey, hit me up with some of your OG, OG."

og by Jordan Cheng October 3, 2007

og 

Original (used if fortnite for skins and players)

Person 1: I heard the power chord came back into the shop today.
Person 2: Well, I have the og one.

og by ManBlo September 18, 2018