What is break a leg?

"Break a leg" is a theatrical idiom meaning "good luck." It's typically said to performers before they go on stage.

• Origin: The exact origin of the phrase is uncertain, but several theories exist. One is that it's a backhanded way of wishing someone the opposite of bad luck, as wishing someone "good luck" is thought to bring the opposite result. Another theory involves superstitious actors and dancers avoiding saying "good luck" directly to prevent tempting fate. Some believe it's derived from the Yiddish expression "Hals und Beinbruch" (neck and leg break). There is another theory of the phrase comes from when curtains were physically held up by an actor or performer's leg at the side of the stage. If the leg got broken then that meant the show was a success.

• Usage: It's most commonly used in the performing arts but can be used in other situations where someone is about to undertake a challenging task, like presentations, interviews, or important meetings.

• Response: A common response to "break a leg" is "thank you" or sometimes "I will."

• Alternative: In some circles, "merde" is used instead of "break a leg," particularly among ballet dancers.

Here are the links as requested:

• Origin
• Usage
• Response
• Alternative