Used when you wish for a positive outcome, akin to knocking on wood for superstitious luck.

Good Luck Gesture

Shows solidarity or support for someone else's situation or success.

Personal Support

The phrase is often used metaphorically, without physically crossing fingers.

Implies someone made a promise but is insincere or will not fulfill it.

Crossing fingers secretly can imply intentional deceit or breaking trust.

This use originated from children's play indicating a 'get-out clause' for promises.