The Bank Dick (1940)

Egbert Sousé leads an ordinary life but is about to have an extraordinary day. Henpecked at home home by his demanding wife Agatha and more or less ignored by his daughter Myrtle, he sets off for the day. He comes across a movie shoot whose drunken director hasn't shown up for work and Egbert, saying he has experience, is hired. Afterward, he gets credit for stopping bank robbers and is rewarded with a job as the bank guard. He seems headed for trouble however when he convinces his son-in-law Og, a teller at the same bank, to use $500 for can't lose investment. The investment is a scam however and when the bank examiner arrives, it looks bad for them. As you would expect however, it all turns out well in the end.