Sexually Transmitted Glitter- Normally happens when you have sex with a stripper or glitter skanks
Guy 1- "did u hear about Shawn?? Yea he hooked up with that stripper Sapphire the other night, his face looks like he got Glitter Bombed"

Guy 2- "Yea man, he got a STG"
by slickjmk March 23, 2012
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Aptly stands for 'Super Tan Girl'; a combination of a Gina and Valley Girl into one entity. Usually blonde, but is based on the overexcessive and obvious fake bake the girl has undergone.

Also associated with the more popular crowd, but not necessarily meaning that they are.
"Do you think that she went on vacation?"
"No, she's just an STG"

or

"That girl over there is such an STG"
"tell me about it, she could support the whole bronzing industry single-handedly"
by fos_oleg January 09, 2010
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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
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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
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