Although the Koko the Clown cartoons were brilliant for their time, they also age well despite being over a hundred years old in some cases. However, there are exceptions and "Koko Nuts" (1925) hasn't aged as well as most of the Kko shorts.
When the story begins, Max (Max Fleischer the animator) is once again frustrated with Koko. So, to punish him, he calls the attendant in the local 'Nut House' and instructs him to lock up Koko and his dog, Fitz. However, the attendant has 'issues' and ends up instead leaving Koko in charge of the asylum. From this point on, there are countless gags about how funny the mentally ill are...with several of them dressed up like Napoleon and the like.
Back in 1925, terms like 'Nut House' and 'crazy' were perfectly acceptable. However, fortunately, modern views on mental illness are a bit more enlightened and making a cartoon that pokes fun at Schizophrenia and the like aren't seen as funny...just offensive. While I hate some aspects of political correctness, I can definitely see a point that such cartoon humor isn't particularly nice, nor funny.