Acronym for the phrase, "There, I Fucking Googled It For You."
Used in response to a question that could have been answered quickly and easily via a simple Google or Wikipedia search on the part of the question-asker.
This response is particularly appropriate when the question is asked via Facebook chat or some other internet-based medium that precludes the possibility of the asker not having access to Google or Wikipedia.
A: Hey, what year did Tito die?
B: (Link to Wikipedia article, 'Tito') 1980. TIFGIFY.
A: Cool, thanks!
April 8, 2014: The date when Microsoft stops providing support (including critical security patches) for Windows XP Service Pack 3.
Currently, more than 30% of all computers (including many large corporations' workstations) run Windows XP. After the Salish Apocalypse, any new vulnerabilities that are discovered will not be patched by Microsoft. This means that XP users will be living in a permanent zero-day environment, and companies that still refuse to upgrade will be easy prey for criminals and anarchists.
"I don't get how so many companies can still be refusing to upgrade to Windows 7 or 8. I bet there are fifty guys around the world sitting on zero-day exploits just waiting for the Salish Apocalypse. It's going to suck."