Cooking with Bill is a series of shorts about the titular fictional 80s cooking show. The "joke" of every episode is that Bill uses some kind of cooking device which ends up producing a gross and gory mess. That's pretty much all there is to these shorts.
Personally I did not find this series of shorts funny or even entertaining at all, in fact watching them made me feel very uncomfortable and perhaps not in the way that was intended. The shock at the end of each episode is completely predictable and there's no continuity between the episodes at all. When I first started watching them I assumed they were going to progressively get worse as they went on but instead they just reset at the start of each new episode, Bill cuts his hand open in the first one and then he's completely fine in the next.
Even the worst of Blomkamp's work is usually passable at best but this was just terrible, I'm not sure what he was thinking with this and with his name behind it I expected more.