Bonne chance ! (Merde !)
Bonne chance ! (Merde !) (French) — Because of the belief that wishing something to someone will have the opposite effect to the one intended, one wishes somebody "Merde !" (shit) to bring him or her luck.
Bonne chance ! (Merde !) — Le mot de "Cambrone" est employé pour porter chance et a un sens de "bonne chance"