I'd like to quote the Divine Terry Pratchett here:-
Besides, it's always useful to be able to blaspheme when you've just hit your thumb with a 9 pound hammer. It takes a very strong-minded sort of atheist to jump up and down and shout, "Aaargh, random fluctuations in the space-time continuum", or "Oh, ancient and outmoded concept on a crutch".
Another one I've heard is "Christ in a sidecar". Ideas anyone?