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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
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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
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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
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"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
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Short for "Get some more". Use while texting
I just plowed a fat chick. So good I'm going to gsm that shit tonight!!!!!
by Lomo October 08, 2014
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G-Spot Massage, the act of stimulating the male g-spot located in the anus.
KeN has mastered the GSM
by UOIT shredderz January 21, 2005
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