GAME, SET, MATCH as in GAME OVER.
me vs Jason in bowling? He has no chance. It is GSM.
by K-rose August 18, 2005
Gender and Sexuality Minority. A more encompassing version of LGBT or the gay community.
V: Who's she going out with, again?
W: Shelly. They're GSMs.
by Sheenangua June 29, 2011
Global System for Mobile communications.

The most common digital cellular system in the world. GSM is used all over Europe, plus many countries in the Middle East, Asia, Africa, South America, Australia, and North America. GSM's air interface is based on narrowband TDMA technology, where available frequency bands are divided into time slots, with each user having access to one time slot at regular intervals. Narrow band TDMA allows eight simultaneous communications on a single radio multiplexor and is designed to support 16 half-rate channels. GSM also is the only technology that provides incoming and outgoing data services, such as email, fax, and internet surfing. GSM makes use of a SIM card that allows memory portability between dumb GSM phones.
The GSM system allowed for both internet surfing and digital voice communications over 1900 MHz radio networks.
by IrishrepublicanArmy January 24, 2004
Game Set Match. Generally used to mark the end of an argument or discussion.
Gertrude: "I believe that I am the most awesome person in the world."

Jack: "You stole a small child last week from the grocery market. That is totally not awesome. GSM"
by JawesomeSauceisCrabs November 15, 2011
Good. Shit. Mate.
Dan: What you do last night pal?

Cal: Drank tinnies, was fun.

Dan: GSM
by jizzyjez September 12, 2013
"Gay-Straight Man"

When "metro" just doesn't quite do it for you.

A man almost certainly gay, yet still likes to have sexual intercourses with many women.
That GSM is so DTF girls.
by snowfender September 08, 2010
See mobile
Call me on my gsm
by Mike Eriksen December 23, 2003

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