These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: Color Classics
Dork Age: These shorts have their fans, but along with the decline of Betty Boop, they are generally considered to be the start of a downward spiral for Fleischer Studios, and they are considered blatantly inferior to the pre Hays Office Fleischer cartoons, and as a blatant attempt to ape Disney's shorts, with all the habits that ensue.
Ear Worm: "Keep A Goin'", the theme of the Hunky and Spunky shorts. The first one has it with lyrics.
Make Him Yell Uncle from Ants in the Plants can be this to some.