A great question. My worst job lasted just a few hours long. The person I was working for was extremely rude and had no manners. So self-respect dictated that I walk away and look elsewhere! Luckily it was just a temp job.
When I was a student I worked with my cousins at a turkey plucking factory, it was near christmas time, and I would never do it again!!!
That's one reason why domaining is so great - it beats pretty much any job out there!
I tried to sell newspaper ads, and I was terrible at it! I just don't have the personality to try and force someone to buy something that thye don't want. I was working off of commissions, so it didn't take me long to quit!