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1.
STG
It is an abbreviation for "swear to god"
U realy Got expelled?
Yea, STG.
by DJ January 25, 2005
 
8.
STG
Sexually Transmitted Guilt

The guilty feeling you contract from hooking up with someone you probably shouldn't have.
I hooked up with this random guy last night, I definitely have a serious case of STG
by PaschSpice October 04, 2010
 
9.
STG
Spotted the Gay! Used to say that you see a homosexual person......without them knowing.
Miguel: Aye do you see that guys hair over there?

Habib: Yeah it is highlighted and spikey!

Miguel: I wish I had hair like him...

Habib: Me too

(Homosexual guy walks buy)

Habib and Miguel: STG!!!!!!!

Habib: Good thing we said STG because if we screamed "GAY" I think he would be offended.
by ineedabettersn2 August 26, 2009
 
10.
STG
STG, is a group of unorganized, disrespectful mobtards that play myspace mobsters! They often use foul and vulgar language on other players pages.

STG members have no honor and will brake stand downs, also partake in other shameful acts. STG members have no pride and should be put in a Mobster Hall of Shame!
STG is a mob of 85 Active people, but we call in 5 allies and beg the Irish to help us fight a mob of 20!

We will kick out mob members of no reason, we will just say they were spying in us!

When stand downs are in place, we will let two days go by then attack again. Why honor stand downs?

We will talk foul and vulgar on peoples pages and make mom jokes..
by MyspaceMobsters May 14, 2009
 
11.
STG
Shreddin The Gnar.
"Yeah son, we were STG the whole way."
by UnkownHumanBeing April 05, 2009
 
12.
STG
Sexually Transmitted Glitter - glitter that rubs on to you during any intimate contact with your partner.
"Last night was awesome, but I got a serious case of STG!"
by Z-Person March 15, 2008
 
13.
STG
An abbreviation for the amazing Los Angeles based electronica/indie/synthpop band, called Shiny Toy Guns.

Members include Chad Petree for vocals and guitar, Carah Faye for voices and vocals, Jeremy Dawson for synths and basses and Mikey Martin for drums.
Did you see STG's show last night? It was AMAZING!!
by stgrule January 17, 2008
 
14.
STG
Coming from the phrase "I'd smash the granny out of that", the Smash The Granny is abbreviated to STG, meaning any Fit, shaggable girl in the vicinity.
Steve! Steve!
What?
STG dude, behind you!
Whoa!
by Andy June 16, 2004