I stg that if you don't stop talking, I'm smacking you.
by Pradughh July 9, 2017
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stg is short for swear to god
Ariana:Bitch your ugly asf

Selena:Stg shut fuck up Ariana
by Sexyhornybish June 23, 2017
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(-noun -abbreviation)
stg stands for 'small tits girl'. Generally used to describe a female person (or virtual character) with small-sized breasts.

The abbreviation can (relatively) safely be used among friends in public places, without raising suspicion of the person in question.

(First seen being used in source-code of some game as a reference to a female npc)
person A: Hey, you see that stg at 3 o'clock?
person B: That blonde? Yeah, so?
Person A: She's cute!
Person B: Dude... why do you always go mental about planks?
by Mister G July 5, 2010
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i stg i heard some footsteps man this is creepy as fuck RUN WHILE U STILL CAN!!!
by john yolo August 8, 2017
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Comes from the one and only Flash. STG is an ultimate compliment that can only be used by the 1 and only Flash Ahhhhh
"STG looks like Flash Ahhhhh"
"Yeah I Know!"
by Mr Flash January 27, 2005
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