Theatres can be dangerous places to work. It’s believed that it is unlucky to whistle on stage but it’s likely this was because stagehands used whistles as a code to lift & lower scenery. If you whistled at the wrong time it could have been catastrophic #SuperstitionSat https://t.co/KKF46QTr2S4873606 Theatres can be dangerous places to work. It’s believed that it is unlucky to whistle on stage but it’s likely this was because stagehands used whistles as a code to lift & lower scenery. If you whistled at the wrong time it could have been catastrophic #SuperstitionSat https://t.co/KKF46QTr2S