The only film The Marx Brothers made at RKO. During salary negotiations with the studio, erstwhile member Zeppo Marx represented The Marx Brothers, threatening to rejoin the group if their demands weren't met.
The original play was adapted into a The Marx Brothers screenplay by Morrie Ryskind, who co-wrote the stage and screen versions of The Cocoanuts (1929) and Animal Crackers (1930) and also co-wrote A Night at the Opera (1935). Much of the original play's strong language had to be toned down for the screen, into milder expletives such as "Jumping Butterballs!"
Although she seems much older and mature, Ann Miller was actually only 15 years old when she made this film. She had lied about her age and obtained a fake birth certificate when she was about 14 years old, which stated that she was 18. She was so tall, poised and beautiful that she pulled it off.
Lucille Ball and Harpo Marx became friends when they made this movie. They reunited on I Love Lucy (1951).