gtg 

The socially acceptable way to stop talking to someone that your tired of talking to. Originally is meant "got to go", but 95% of the time it is used nowadays it simply means i want to stop talking to you.

"Do you want to here about my english paper" Joel
"Ah sorry gtg" Me

gtg by PotomacThug June 3, 2012

gtg 

an acronym for "green tree goblins"

holy shit, did you just see those gtg?

gtg by indeedyesnomaybeso January 3, 2008

gtg 

to gob the goop
as in a 100% blow job

I know she will GTG

gtg by indianbullet September 8, 2010

gtg 

Get-together. A meeting of two persons or of an internet social group.

Do you want to gtg?
When is the next WoW gtg?

gtg by Anonimity April 11, 2008

GTG 

GlitchTheGame.com acronym, made popular by the WiteFlight and his socom and halo 2 hacking site, used by most haxing socomers

I just learned the ninja jump on GTG, Wite really knows his sh**!

GTG by TheWiteFlight February 16, 2005

GTG 

Guess the Girth. A game in which players guess the girth of a person's waist. The person who's girth is being guessed is generally fat.

S: Check out the chubster over there. GTG.
I: idk what do you think
S: 48 inches obv

GTG by shoshofosho September 6, 2012

GTG 

This is a short.
it means "Gotta GO" it is mostley used on social media or any chat application.
Example
Tom :"GTG"
Brittny: "Cia"

GTG

GTG by TheFaker December 12, 2016