I couldn't believe my luck, no one had laid a hand on me.

Only people who haven't known each other very long and still can't believe their luck, I would think.

Where ever that team is now, it can't believe its luck.

I can't quite believe my luck in having got the chance to do this show.

My husband and I stared at each other; we couldn't believe our luck.

I had just turned eighteen and could hardly believe my luck.

It had been a very near thing and he still could hardly believe his luck.

He has never known her this slim and can't believe his luck.

It's the laugh of a man who cannot believe his bad luck.

He'd won the year before, so I couldn't believe my luck.