This is probably a better question for another community with serious answers. It’s not difficult to come up with a bad job that you can get or a good job you can’t get.

Anyway. A wrong answer: Someone who cleans out fungus from the skin folds on morbidly obese people. (It’s a bad job but you can easily get it.)

Or using the other idea: Protecting the endangered dodo bird. Nice job, but unfortunately there are no dodos left to save, so you can’t ever have that job. Unless they make a cloned bird from DNA samples. Then you could theoretically get that job.

Had it been asked for serious answers, I’d say dog butt licker. Ain’t nobody gonna pay you for that.