mgg 

Internet shorthand for Matthew Gray Gubler of Criminal Minds fame, often used on livejournal.

Occasionally written as em-gee-gee if the writer is feeling like a giggly fourteen year old girl.

In other news, MGG is a total GQMF.

mgg by vive la insomnia February 27, 2010

mgg 

mathew grey gubler

tik tok girls: mgg is very very very hot

mgg by -oops August 4, 2020

MGG 

Mammary gland Gyration... the act of tittyfucking

MGG is the same as tittyfucking, just a better way of saying it

MGG by sihir February 25, 2011

MGG 

MMG stands for "Male Gay Girlfriend". It is said of an MGG who's always a girl's puppet. He would do anything for the girl, as he thinks she'll eventually will go out with him if he follows her rules. However, he is a MGG because at the end he doesn't get the girl since she's only using him for her girly purposes.

- Dude 1: Hey girl can I help you out carrying your bag pack? And maybe afterwards we can go take a drink, and don't worry, I'll pay for it.
- Girl: Ooh "dude 1" you are so sweet! I'll gladly go with you! And thank you sweety!
- Group of guys (backstage): Oooh man! Did you see that guy? The way he's acting omg... yeaah.. he's an MGG..

MGG by Cpt_Pescanova November 30, 2017

MGG (Mammary Gland Gyration) 

The systematic and continuous frottage of the male genitalia against, in between, or on top of the female breasts.

Naw dude, I don't want to hook up with her, those are A cups...I can't even MGG (Mammary Gland Gyration) that shit!!

MGG (Mammary Gland Gyration) by MMGking February 22, 2011

MGGS

The BEST girls grammar school in Kent, with many of the pupils having boyfriends at Oakwood Grammar or the posher boys school MGS.
The school is home to a wide mix of people:
-the few emos that people stay well away from
-the sluts who shouldn't even be at a grammar school
-the geeks who get upset if they get an A in a test
-the posh girls who walk around in UGGS, Jack wills, ralph lauren, etc. and messy hair.
The school is also home to a few eccentric teachers, such as the male teachers who dress up as women every Rag Week and thoroughly enjoy doing so.
The pupils are well-known in the area for their brown 'turd' uniform, and are likely to be even more so next year when the headmistress is introducing brown kilts.

'Haha, that girl must go to MGGS, she's wearing brown'
'That girl over there goes to MGGS - yeah, she's bound to, she's wearing glasses'

MGGS by A fellow pupil February 18, 2009

Mggobsessed 

Being obsessed with Mathew gray gubler

Me:I have mggobessed

Mom:he’s 40 ur a minor

Mggobsessed is being obsessed with Mathew gray gubler

Mggobsessed by Surprise shawty January 6, 2021