Written acronym of "the end of the world as we know it," referring hyperbolically to some sudden or unexpected deviation from what is familiar or customary. Well, whoever is elected President, it won't be TEOTWAWKI; each candidate is as good or bad as the other in my book.
the end of the world as we know it
and TEOTWAWKI
phr. & comp. abb. said to emphasize that things change, often a lot. Yes, you have to buy the operating system separately. It’s TEOTWAWKI.