A long-standing superstition in theater is that if someone wishes you 'good luck' as you're going on stage, that's a jinx, and it brings you bad luck. So people do just the opposite, our of consideration for the actors and the superstition of their profession..
it mean good luck ;
The expression 'break a leg' is used in theater to wish actors good luck while avoiding the superstition that saying 'good luck' directly brings bad luck. Its origins may relate to actors needing to bow after a successful performance or occur due to old theatrical superstitions. This phrase highlights the traditions and community spirit in the world of theater.
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