Who's a Dummy? (1941)

Mrs. Errol, rehearsing for a play but keeping it a secret from Leon, forces him to take a taxi, as she needs the family car. The taxi driver tells Leon a tale of a love triangle that sets Leon's imagination on fire. He follows his wife and discovers her rehearsing a love scene with an actor, and he thinks it is real. He is leaving when he hears a pistol shot and rushes back, to discover his wife stuffing a dummy in a hamper, but he thinks it is a real body. To protect his wife, Leon steals the hamper, and is almost lynched by a crowd who also thinks the hamper contains a real body.

Who's a Dummy? has a runtime of 17 minutes.