Immature and Unfunny
Randomness does not always equal funny. In fact, it often doesn't. Even the lamest, weirdest sprite short of under ten seconds has to have a plot of some kind. For instance, the two Abobos from the NES version and the Arcade/GBA version of Double Dragon, meeting at long last. One says, "WHO THE **** ARE YOU!" and the other says, "Hello." just before getting kicked off the building. It's a strange encounter that horrifies one of them.
As for "Chefmaster", this is just a series of stupid things happening that don't amount to anything. Zombies attacking the Great Wall... now where did we pull that idea out of? Screaming "Father!" at the end did not make anymore sense than anything else in the cartoon. Worst of all, some amount of effort was placed into a cartoon that failed to make a better portion of the audience laugh.
This is the turning point where an animator either smartens up and starts to communicate with their projects rather than being merely clever, or ends up being criticized for being a repetitive hack. Those Ass-Duff movies were okay for their time, but at some point, you got to grow up.