OG 

Organically Grown.

Food grown and processed using no synthetic fertilizers or pesticides.

"Organic Dark Chocolate (OG cacao beans)"

OG by Freak Nasty B September 22, 2008

og 

Orignal. Was a word made up from BMX'ers/Skater slang from the early 80s.Today its known as "Orignal Gangsta" which was derived somehow to Ice Cubes silly lyrics just to make a buck because the initials matched lol.

Yo guy, those wheels on your bike are og dood.

og by James January 28, 2005

OG 

A pimp; A high chief; One who answers to noone else.
Derived from the 6th century word for an occupier of Ogham's Hill in what is now modern day Wales.

Dude, did you see Smitty meet and walk off with that chick in like three minutes of talking to her? What a fucking OG.

OG by Shnoop July 25, 2004

OG 

Original Guido (Jersey Shore)

Damn that guy fist pumps like an OG

OG by Baamzz January 18, 2011

og 

on god. use it when youre being serious and want someone to believe it.

Paul: og i didn't eat your last slice of pizza
John: okay man I believe you

og by fundamentalist101 January 16, 2017

Og 

To be used in place of the word "hello".
Can also be used in place of Hi, but never Hey.

Person 1: Og
Person 2: Og, how are you?

Og by I have 3 first names November 6, 2011

OG 

overgrow forums @ www.overgrow.com

marijuana is awesome, i love OG 's forums

OG by Mike Girard April 26, 2003