While filming an action-packed scene one day, famed director Michael Curtiz, a stickler for realism, ordered an army of extras to throw authentic spears at Errol Flynn.
In a fit of anger, Flynn, dodging a hail of lethal projectiles, raced across the set -- and headed straight for Curtiz. The director's response? He beat a hasty retreat -- and promptly called out: "Lunch!"
Sources
O. Levant, The Unimportance of Being Oscar