This is a statement you would use to
say "Well, good for you!" but with a lot harsher meaning of sarcasm than the above phrase - crossing over into the territory of "Did you now, well good for you, but to be honest, I really
don't give a
flying fuck!"
Just see the film Aliens - where the
soldier that's whinging all the time, played by Bill
Paxton says "well, whoopie
fucking doo" it - that's a perfect example!