My mom used to be fond of 'que sera, sera'. Unfortunately, I sort of adopted it, and it's not a good thing. Too close to "the will of Allah" or just plain old "yeah...whatever." It may actually be countered by "but if you try sometimes, you just might find, you get what you need."

I, and a lot of people I know have adopted 'good, though' as it was used in...well, it was originally a Utah Phillips story (Moose Turd Pie), not a song. I think it's a song now, though.