I don't know first-hand, but I've heard that there are people whose job it is to "harvest genetic material" from male animals on farms. For breeding. I don't even want to know how they do it. That's just nasty.
Cleaning bodily fluids up after deaths and crime scenes. I've heard that chuck-e-cheese isnt too pleasant as well. I would absolutely despise sitting in a cubical or tiny office working for a greedy company that stands for everything I am against and doesn't pay nearly enough. Letting 'the man' take control of my life while I conform into s societies standards of having a good, proper career would be my worst nightmare.