Can I use, "Fingers crossed"?

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Mar 7, 2011 19:41
Here in the UK, people often use the phrase, "Fingers crossed!" when they wish something. Sometimes, they are even willing to cross their legs as well, I suppose.

Is this an Christian tradition? Although it's obviously not an authentic prayer, the "cross" seems to be nothing more than the Cross in Christianity.

If so, given that I am not a Christian (I'm a Shintoist and half Buddhist), can I still use this phrase? Or, had I better to avoid using this?