I know I've heard that phrase someplace before.
It was in a documentary, used to describe the last desolate days of the Third Reich.
As the Russians inched closer towards Berlin, Hitler and his posse were barricaded inside his bunker, partying like it was 1999. We all know what happened once the Russians were literally outside the front door.
Now that phrase is being used to describe a modern day bunker -- the White House:
"Late last week, Bush was, by some accounts, down and angry. But another Bush aide described the atmosphere inside the White House as 'strangely surreal and almost detached.' At one meeting described by this insider, officials were oddly self-congratulatory, perhaps in an effort to buck each other up. Life inside a bunker can be strange, especially in defeat."http://www.washingtonpost.com/wp-dyn/content/linkset/2005/04/11/LI2005041100879.html