Nickel

"If I had a nickel for every time (__fill in the blank__), I'd be rich!"

I'm sure I said this phrase hundreds of times (for all sorts of reasons), but the one that first comes to mind is when I worked at Best Buy. "If I had a nickel for every time a customer asked me if this would fit in their car, I'd be rich!" The bad part was that nine times out of ten, whatever it was that purchased wouldn't fit. I think what was worse is that I had to make it fit more often than not.