As another reviewer pointed out, "More Pep" brings back the style of the older Fleischer Studios cartoons from the 'Out of the Inkwell' series which starred Ko Ko the Clown in the 1920s. Now, in 1936, the same style was brought back for a cute Betty Boop cartoon.
"More Pep" begins with a human hand creating a cartoon in ultra-high speed. The animator then describes an incredibly dangerous stunt that Pudgy the dog is going to complete. The problem is that all Pudgy wants to do is sleep. So, Betty crawls out of the inkwell and tries to rouse her pooch--to no avail. So, Betty creates a machine to instill Pudgy with pep. Unfortunately, the machine goes crazy and begins spraying everywhere. Most of this isn't really funny and just speeding up stock footage of real people isn't all that clever. But, I did LOVE the interaction between Betty and the voice of Max Fleischer--the head of Fleischer Brothers Studio--that was clever and cute. Well worth seeing even if some of the laughs are a bit forced.