By crossing your fingers

yes. you will be shot.

If it is a bet on money in adulthood crossing your fingers should not be eligible but if it is a childish bet you should be aloud to cross them

No. I hope she will be soon though, If she does . . . I'm crossing my fingers that she will win.

• Crossing one's fingers is generally meant as good luck so if the person is making a promise that is not true and they cross their fingers they are hoping you will believe what they are saying.