OG 

Used to mean Original Gangsta or Old Gangsta (when a person has been living in the hood for 30+ years.)
Nowadays It's a quicker way to say Original.

Yo that thing you did in the studio was so OG.
Hell yeah.

OG by b0jl3rEl4dű March 3, 2019

OG 

original giraffe

Caleb and I are the OGs bc we big tall

OG by killing.kittens.for.mittens March 9, 2019

OG 

Old-Ass Grandma

Ice Tea is an OG, and by that, I mean he is an old-ass grandma that gets mad at mean words on the internet.

OG by Holden Mike Hawk June 26, 2019

og 

original gangsta

only real ogs made musical.ly

og by kangarooiskool August 1, 2019

OG 

Original Grammarian

My Mama Diane is the OG. Growing up she showed her love and care for me by incessantly correcting my grammar.

OG by Brothaontheinside September 3, 2019

OG 

Operating General

Misconceptions about the initials lead to believe „OG“ is enunciated „Original Gangster“, which is also somewhat true.

Symbolizing the achievement of the age „25“ in an unpleasant environment.

However the term originated in the underground scene of growing individual Cannabis-Strains.

„Original Genuine“ in this case, has an almost same meaning. Implying non-existant reproduction, therefor a unique breed. „Einzelstück“

Grow-OPs are run by the OG
„Operating General“ intending the current Standard.

OG by Xandalf September 23, 2019

Og 

A word used by little kids that is contagious and stands for “original gangster”. This word is mostly used in the game fortnite.

He has played the game since it came out so he is a og

Og by I’m so og October 14, 2019