Top Definition
Acronym for 'thank god it's'

Most commonly known in the American Resteraunt, TGI Fridays.
1. TGI Friday man!
2. TGI not too late to hand in my homework
by Foops June 28, 2008
thank god (or goodness) it's sunday!
i have been so busy this week, i really just need a day to relax, tgis.
by laerun July 06, 2008

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