What does it mean to keep your thumbs behind your back

To keep one's fingers crossed for someone

To keep one's fingers crossed for someone

There are many ways to wish each other good luck. You can say “good luck!” Or keep your fingers crossed for someone. Does it help? After all: who is not happy that they are thought of?

Gloria has her driving test tomorrow. She is well prepared but is still afraid. What if the examiner is having a bad day and torments them with difficult tasks? What if it rains all the time and she can't see anything? And what if she's too nervous to park properly? To her sister Greta she says: “Please keep your fingers crossed that everything will go well!” Greta understands her sister's fears well. “There's no point in being nervous,” she says. "I cross my fingers for you. You can do it all. ”Of course, Gloria passes the driving test. She says to her sister: “Thank you for keeping your fingers crossed for me. That really helped me! ”“ Nonsense! ”Says Greta,“ I did believe in you, but you did it all by yourself! ”

To keep one's fingers crossed for someone