Whilst familiar with some of these traditions and prohibitions, like the ghost lights that even burned in theatres when everything was shut down during COVID, we didn’t know the possible origins of the taboos, like not mentioning the Scottish play, and enjoyed reading this overview of backstage customs and lore.
Although sounding superstitious, whistling in a theatre was discouraged as sailors were often employed as stage crew for their skill with ropes and knots and brought with them their jargon of command whistles and an actor would not want to countermand or confuse an order, lest a prop be dropped on their head. First performed during a time when most theatrical companies had a set repertoire, rather than courting bad luck, the suggestion of Macbeth was an admission that perhaps a season’s run with flagging audiences could be turned around with the staging of a really popular piece. Wishing one to “break a leg” has a myriad of possible roots, from understudies politely wishing an accident would befall their respective principals so that they could assume the role, to cross a threshold—“the leg line” of a concealing stage curtain and take a bow before the audience to the most likely etymological source, both Wanderwörte and retronym and a bit of mishearing, with the entertainment industry directly borrowing from the idiomatic wish amongst Luftwaffe pilots during the first and second World War Hals- und Beinbruch, “may you break your neck and leg,” as a corruption of the Yiddish phrase: הצלחה און ברכה—that is hatsloke un brokhe, “success and blessings.” Professional dancers, on the other hand, exclaim “Merde!” to one another, harking back to times when horse-drawn carriages would bring spectators and a lot of dung in the streets of a venue would mean a solid box-office.