Marx Brothers Say She Is". Their third feature-length film, "Monkey Business" (1931), was their first movie not based on a stage production. "Horse Feathers" (1932), in which the brothers satirized the American college system and Prohibition, was their most popular film yet, and won them the cover of "Time" magazine. It included a running gag from their stage work, in which Harpo produces a ludicrous array of props from inside his coat, including a wooden mallet, a fish, a coiled rope, a tie, a poster of a woman in her underwear, a cup of hot coffee, a sword; and, just after Groucho
Monkey Business (1931 film) "the best this family has given us." The film was evidently based on two routines the Marx Brothers did during their early days in vaudeville ("Home Again" and "Mr. Green's Reception"), along with a story idea from one of Groucho's friends, Bert Granet, called "The Seas Are Wet". The passport scene is a reworking of a stage sketch in which the brothers burst into a theatrical agent's office auditioning an impersonation of a current big star. It appeared in their stage shows "On the Mezzanine Floor" and "I'll Say She Is" (1924). This skit was also done by the Marxes