Used to confuse people and waste there time. But originally stands for "Travis County Master Gardeners Association". Trolls often reply to someone angry and frustrated on message boards with TCMGA.
Person1: I'm so pissed off right now.
Person2: TCMGA Much?

Person1: TCMGA?
Person2: Stop TCMGA'ing
by Dizazsters June 11, 2010
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