In Betty's Crazy Inventions of 1933 Betty performs in a carnival sideshow-the Big Invention Show. Assisted by Bimbo and Koko, she leads a tour of her inventions, each one more outlandish than the other. Her spot remover machine removes stains by cutting them out of clothes. She and her companions demonstrate a cigarette snuffer, soup silencer, sweet corn regulator and more. And, of course, there is an opportunity for Betty to sing a "boop-oop-a-doop" tune. When one of the inventions goes astray, disaster ensues until Betty and Bimbo escape.
—KS at ClassicCouple.com