SMG 

Spiritual Mafia Gang
Gang established by youth in Curacao which has alot to do with the real definition of Mafia; swagger, boldness, bravado etc etc

-Yo is that the SMG?
-Yes it is.

SMG by SMG_#1 August 1, 2021

smg 

In the world of BMW autos, it means "sequential M gearbox"

The 2003 BMW M3 has SMG, which is arguably an improvement in the traditional 5 speed way of shifting

smg by Leandro October 30, 2004

smg 

acronym for "Swag Master General"

"yo man did you see SMG tonght, she had sooo much swag"

smg by Mayhem Swag December 5, 2011

SMG 

An acronym for so much game.

When a man is wheelin' a lot of biddies (chicks) he has so much game: SMG.

Also if you're getting a lot of action, you have so much game: SMG.

Man 1: MAN! JOEL SIGGELKOW HAS SMG!

Man 2: LOL I KNOW! HES KNEES DEEP IN SMG! HES CRAWLIN' IN BIDDIES!

SMG by PURE FUCKING ANGER December 14, 2010

SMG 

Exclamation:
shortened version of "slap my grandma"
used in place of "lol" to make you seem more "hip"

hahaa omg bro that's hilarious smg

SMG by Billnye2 August 15, 2011

smg 

Acronym for "suck my genitials". Assosiated with sex, sucking a man's penis.

Girl: Fuck off!
Guy: smg

smg by MLP:FiM FTW! October 28, 2012

smg 

The highly talented actress, Sarah Michelle Gellar. She starred in the groundbreaking television show Buffy the Vampire Slayer which changed drama forever.

What's the new SMG movie out called?

You're as cute as SMG

smg by Divine Proportion June 13, 2005