I saw people crossing their fingers after lying. Does that gesture have the same meaning as "fingers crossed?"
Native speaker’s answer
Rebecca
This is a very good question! "Fingers crossed" is taken from the hand gesture of crossing one's first and middle finger to indicate that one hopes things go well. It's a bit of a superstitious gesture/expression that means "may all go well". On the other hand, when a person crosses their fingers behind their back when they lie, they are asking for protection from the consequences of lying - basically asking to be safe or unharmed from whatever happens if they lie or get caught lying. So they do have somewhat similar meanings! Ex: I saw you cross your fingers behind your back. Did you lie? Ex: Fingers crossed that it won't rain tomorrow, or our vacation will be ruined.