Here’s a Betty Boop cartoon featuring Jimmy Swinnerton’s Little Jimmy (I’ll be presenting some Little Jimmy strips soon for your reading pleasure). Betty is using a vibrating belt machine to lose weight… I remember playing with one of these at some relative’s house as a kid. I don’t think anyone ever lost weight with one of these contraptions, and it would be a good bet that a lot of people met their chiropractors with their assistance. This cartoon also reveals the little known fact that laughing causes obesity, which explains why fat people are always so damned jolly.

Read more about this cartoon on The Big Cartoon Database here.