What's the worst boss you've ever had?

So, right now, I am working at a piece-of-crap restaurant. We have somewhat of a problem with gnats. The pesky little things are discouraging many customers, they are flying all around the food, sometimes even falling into it, and our boss refuses to spend money on eradicating the gnats. He never smiles or greets the employees or the customers, constantly talks to his friends on his phone, and has a very short temper. He pretty much goes from 0 to bitch in less than half a second(even if it’s over something “insignificant” like asking him to sign an important document). So, I want to know, who else has or has had an amazing boss like mine?