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1 definition by UltraMagnus

 
1.
Acronym for "So Sad, Too Bad". Popularized by haters and StarCraft players in particular.
Fired Person: Oh man, I just lost my job.

Nice Person: I'm so sorry to hear that. I offer you my condolences.

Mean Person: SSTB! Guess you'll be living on the street!
by UltraMagnus May 19, 2006