This acronym stands for "Good things come to those who wait".

Meaning:

Philosophical understanding of obtained things (either moral or material) by the hard work, full contribution and self-dedication to them.
Like working on scientific works for a life and after years get a Nobel Prize.
Or been an actor, starring in thousands of great movies and never get an Oscar for them, but continue acting a lot and afterwards been rewarded!
...and the Oscar goes to Leonardo DiCaprio for the best actor 2016!
This is the first Oscar in six nomination.
Leo mumbles: Oh-yeah, GTCTTWW!
by someoneniemand April 21, 2016
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