For a movie made on a shoestring during the Great Depression, this movie delivers plenty of laughs -- which is precisely what it was designed to do. It isn't educational, and it doesn't have a "moral", and it isn't high-brow. Neither were the Stooges. The only public goal of making a movie like this (besides getting paid) is to make people laugh a little during one of the darkest times of modern history. And it pulls that off with aplomb.
For anyone out there seeking depth where there isn't supposed to be any, I have this to say: Just because the plot changes direction to fit the jokes instead of the other way around, that doesn't make it a bad movie. Watch the flick and laugh along. It's only 63 minutes long. Can you stand 63 minutes of laughter in your life?