That was the title used in the article by Gene Weingarten of the Post, but I grew up referring to places as "The Armpit of the Universe.
Calling a Third World country the Armpit of the Universe is really unfair.
Asking around, I was told that places with lots of crime, abandoned buildings, many closed storefronts in their downtown or high unemployment rates coupled with people hanging around the streets all day appearing to have little to do might get a vote for Armpit of the Universe.
My personal Armpit of the Universe growing up was - and there is nothing personal in this - Winchendon.
Of course the Armpit of the Universe title for Winchendon was unfair, even though a local newspaper columnist took to referring to the town as Winchen-tucky, implying it was the Appalachia of northern Central Massachusetts.
To truly be the Armpit of the Universe, a community needs to have something special, deeply decadent and pretty pathetic.