OGT 

Original Gangster Tool; a fan exclusively of TOOL's Opiate 1992 EP.

I met a boy wearing Vans, 501s,
and a dope Beastie T, nipple rings,
and new tattoos that claimed that he
was OGT
from '92
the first EP

OGT by eepberries November 21, 2004

OGT 

Original Gangster Tool, someone who claims to have been a fan of rock/metal band Tool since the beginning; term appears in Tool's 1996 song "Hooker with a Penis"

"I met a boy wearing I met a boy wearing Van 501s
and a dope beastie tee,
nipple rings, new tattoos,

that claimed that he was OGT"

I met a boy wearing van 501s
and a dope beastie tee, nipple rings,
and new tattoos that claimed that he was OGT

OGT by JKMaynard October 16, 2017

OGT 

In spanish language, sounds like "ojete", wich means asshole (Ironically, asshole and ojete have the same two meanings in both languages: stupid and anus).

Eres un ogt!!!
You are an asshole!!!

Bésame el ogt...
Kiss my asshole...

OGT by Zolrak December 1, 2006

OGT 

Acronym for an obviously gay trait. Obvously gay trait is a quality often associated with a homosexual that outs them.

My mom should have known, shopping was my OGT.

OGT by luke102280 September 27, 2006

OGT 

Test made by the state of Ohio under Bush. Becuase no child left behind said so.

The OGT is a waste of time

OGT by ogt2graduate May 13, 2005

OGT 

The greatest rapper of all time, originally meaning “Old Granny Titties”.

“Did you hear OGT’s new mixtape? That shit fire!”

OGT by tank272001 July 10, 2021

OGT 

I believe the Tool reference is meant as "Of Good Taste". It makes more sense with the song and is a fairly common term.

That musician is OGT, hes a real good player.

OGT by TheBORG28 July 7, 2011