SG 

Pronounced, "Es-Jee". A common term for a "Silly Girl". This term refers to a female, (or a male who has femanine hair) generally a blonde, whio is intellectually incapable. This person typically stares off into space quite commonly, and procrastinates on homework. A typical SG will believe themselves to be "Ninja", or significant in any other way, but they are most definitely not. "SG's" make terrible friends and are usually jerks to the people who are nicest to them. Good type of person to make fun of.

That SG be actin' like a fool...

SG by YoMyMamaisLG! April 5, 2010

sg 

Sex God: really hot; or good in bed

Mike is my perosnal sex god!

sg by nobody December 4, 2003

sg 

A slight giggle. What happens when someone goes ham on you and you cant do anything else but let out that fake laugh.

james: pewwwww!!! what are you wearing??

john: boy chill wit cha faded fubu tennis.

stranger: hahahaaha

john to stranger: idk why ur laughing cuz u were fresh for bout the first 3 days of school.

stranger: ...*sg*

sg by sj11 April 16, 2010

SG 

means "silent grin" used instead of "LOL"
used mostly in IMs and text messages

them - "yeah, it was a pretty funny joke, they all laughed"
you - "sg"

SG by Jordan ennedy January 9, 2008

sg 

"Shit game" After some sort of online game to indicade the game was unenjoyable.

Player1: gg
Player2: sg

sg by Wudafu June 13, 2005

SG 

A two letter phrase that stands for "so good". Often used sarcastically when someone does well on something to make them feel awkward or when someone does really bad on something, again, to make them feel awkward.

Andrew: Hey what'd you get on the test?
Austin: 45 :(
Andrew: SG!!!!!!!!

SG by The FDM April 2, 2017

SG 

Shotgun
"Definition is too short" huoh

he blasted his brains out with SG

SG by whitenigga January 17, 2004