sg 

Short for "Sentri Gun"

Turn your sg to face the door.
I killed the sg in the ramp room.

sg by Argh July 6, 2003

SG 

Super Gay

Jesse is SG and SS; he tried to get his willie in his own ass, and he tripped and fell over.

SG by Dr J September 6, 2003

SG 

Any male who is 1.5 of a Man, and Super Great. Wonderful Speechless the Great (WSG) and Super Great UAC (SGUAC) are the only two known SG's.

Those who are anti-SG must be 8-11'ed.

SG by Don Super Great UAC 84244525 From the Block July 21, 2003

sG 

sG means Sex Goddesses

A Godlike Anti-Virus

sG by Pinky March 30, 2005

SG 

A Gibson guitar that could be described as the poor man's Les Paul. Stands for "Solid Guitar" even though it's light weight and thin neck make it very prone to accidents (like headstock snapping). The most common setup is mahogany-bodied, cherry red in color, and two humbucker pickups.

Angus Young's a short dude, so you'll only see him playing an SG.

SG by Alex August 25, 2003

sg 

state of mind in which you like meme bags and eating Doritos. Also has a list of crushes consisting of 2 people.

Don’t be such an sg

sg by Friend28 February 15, 2018

SG 

'Cause sounds good takes too long to type

Bro:"I'm bored let's go Lazer tagging"
Me:"SG I'll meet you at your house"

SG by Frooty-loops May 21, 2018