Moss Hart and
George S. Kaufman, authors of the play from which this film was adapted, were good friends with
Alexander Woollcott, a famous critic, radio personality, and lecturer at the time. Woollcott requested that they write a play FOR him, but they never came up with a plot. One day Woollcott came to visit Hart unexpectedly and turned his house upside down, taking over the master bedroom, ordering Hart's staff around and making a general nuisance of himself. When Hart told Kaufman of the visit, he asked, "Imagine what would have happened if he broke his leg and had to stay?" They looked at each other and knew they had a play.