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Stands for "For Good This Time." Is used to either express intention to follow through on a persistent threat, or to mock someone who is NOT going to follow through on a threat.
"If Mike calls me in for the Sunday shift again, I'm walking out FGTT."

by Arnold J June 30, 2008
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Jul 1 Word of the Day
sending two texts in a row without a reply inbetween.
Rachel: whats up?
Tessa: not to much! hbu?
Tessa: dude, i'm so bored.
Rachel: stop double texting me.
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