Has multiple meanings:
-Short for "Thank God"
-And the less known meaning, shorthand for the fetish known as "transformation of gender" which is most commonly seen on sites like DeviantArt and FurAffinity. Discovering TG art or fiction is usually the first step in someone realizing that they are transgender.
Guy 1: Man, that TG fetish sure is weird.
Guy 2: No way, TG art is totally the shiz.
Guy 1: Bro you trans?
by KrimsonKatt August 3, 2021
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I started my period today, tg! I was getting worried.
by kristobabe July 27, 2009
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An abbreviation of True Gentlemen. Used when someone acts with gentlemanly conduct. Usually used when referring to a member of Sigma Alpha Epsilon Fraternity who follow the True Gentleman creed written by John Walter Wayland. It is as follows:

The True Gentleman is the man whose conduct proceeds from good will and an acute sense of propriety, and whose self-control is equal to all emergencies; who does not make the poor man conscious of his poverty, the obscure man of his obscurity, or any man of his inferiority or deformity; who is himself humbled if necessity compels him to humble another; who does not flatter wealth, cringe before power, or boast of his own possessions or achievements; who speaks with frankness but always with sincerity and sympathy; whose deed follows his word; who thinks of the rights and feelings of others, rather than his own; and who appears well in any company, a man with whom honor is sacred and virtue safe.
Thanks for holding the door. That was very TG of you.

Channing Tatum is so Hot. I hope he's a TG
by tglover April 9, 2009
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I'm french.

TG = Ta Geule
Ta Geule = Shut Up
It's like FTG (Ferme Ta Geule): Shut the fuck up !
I'm sure of this !
a: blablabla flood !!!!
b: tg !
c: yeah man, ftg !
by *TZA March 22, 2006
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Acronym for Toxic Guy Syndrome. When a guy, despite having a girlfriend, tends to let his lower head's thoughts overpower his upper head's thoughts. Basically when a guy thinks with his penis instead of his brain.
Guy 1 : Hey, man I haven't seen Stephanie around in a while.
Guy 2 : Yeah, bro, I think I have TGS.
Guy 1 : Oh, you cheated on her?! With who?
Guy 2 : Some hot piece of ass I saw at a party last month.
by Sexican619 May 29, 2008
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At least I escaped with a couple fingers, TG
by grapes October 10, 2004
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Tgs is a form of Bike trials involving Taps, Gaps and side hops.
it is a very contreversial style as it is single moves apposed to fluent lines.
It is Disliked by many members of the bike trials community as many riders of this particular style are arrogant, illiterate and cocky people.
Many TGS riders also enjoy "inch-Pinching"
Tarquin:Hey look at that Sidehop!
Klause:Yeah, hes a TGS rider.
by Adamsomethingornothing August 2, 2008
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