"In bocca al lupo" (Italian pronunciation: [im ˈbokka al ˈluːpo], "in the mouth of the wolf") is an Italian idiom used in opera and theatre to wish a performer good luck prior to a performance. The standard response is "crepi il lupo!" or, more commonly, simply "crepi!" (Italian: [ˈkreːpi il ˈluːpo], "may (the wolf) die").