I would say
Chef(not a great cook)
Weightlifter (not very strong)
Builder(would be no good)
Anything where I have to stand in place for long periods of time. My back can’t take it. Standing in a queue for more than about 15 minutes puts me in intense pain. Walking is fine.
The new thing at work seems to be these standing desks for computers. I was asked if I would like one. I asked if they have laying down desks 
Pretty much any job where I’m a human robot. I want something analytical, where I can solve problems.
Anything Mike Rowe does on that show of his.
Pumping septic tanks …
Yeah. I also wouldn’t want a job merely cleaning bathrooms. In high school I worked at McDonald’s. One night some lunatic smeared poop all over the bathroom. All over. The manager asked who was going to clean it up, and all of the employees indicated that we would rather lose our jobs.
Retail, with few exceptions.
I’ve always felt that being a truck driver would probably be extremely stressful. I think I would probably start having panic attacks my first day on the job.
All of them. The worst would be anything repetitive. And now anything requiring me to use my legs much.
I would not want to be one of those guys who set up and clean porta-potties. Also, I would not want to work in a coal mine.
Any job where you are a prisoner, effectively chained, to your post or duty and must call for a replacement just to answer the call of nature.
Horse inseminator. Actually, any job where I had to inseminate animals.
Anything retail; I’ve done it and may again but I won’t like it. People are just too damn stupid too often.
Fast food even in the back; the smell of cooking grease all day would nauseate me.
Working for a politician/campaign for money. If you are good and I want to see you elected I may volunteer. But do it as gainful employment? Just not my thing.
The jobs I have hated have been the bullshit jobs. The ones that exist only to create billable hours and could easily be done away with. I would be okay with cleaning toilets with appropriate PPE; this is a job that has results and kinda really needs to be done. A meta data market analysis survey does not need to be done.
The worst job I ever heard of by someone I knew was, there was a property locked up and sealed because of litigation. At the time, there were live animals (chickens) on the property. Three months later, litigation over, the property needed to be cleaned up. As may be surmised, there were no longer any live animals. So first of all it was gross, second of all it was a constant reminder of unnecessary death as a result of human greed, and the person who did this job was really whacked after doing it, which it ended up taking days, and he didn’t get over it for months. Or maybe never. Even though they were just chickens.
English teacher in Thailand. There are a handful of plum jobs, while the vast majority of positions pay starvation wages. If I’m going to live in poverty, I’ll do it in my own country, not the Third World. It’s amazing, but it seems just about every country in the region will pay, while not a great salary, at least a decent one to English teachers. Thailand is definitely the odd man out in this regard.
Waiter.
Janitor.
I too would avoid any job where I must inseminate animals, although I do admit to having seen some mighty cute sheep.
Doctor. Don’t want no sick people all day long!
Also, any job involving sales. I suck at selling things.
I vote for retail. Did it for a couple years, but I was the “rude/stupid/clueless customer magnet” of the entire region.
Now, I’m one of those people who DOESN’T have a problem with cleaning bathrooms, shoveling animal poop, or servicing portable toilets. I’m not sure why that is, but once I get past the initial smell (give me about 30 seconds), I’m fine. If I have some Vick’s Vaporub handy, I’ll clean up anything right away.
Oh gawd did you see the turkey inseminator episode? Talk about stomach-churning work.
Proctologists.
Just about anything dangerous, difficult or boring. (Which admittedly rules out about 99% of jobs.) 