The worst is the post digging tool. I once smashed one to bits after a day's work.
I've dug a lot of holes in my lifetime.....only to find myself IN them.......LOL I'm afraid I couldn't do that type of work. My body couldn't handle it. LOL
Generally, the worst are the mules packing the post hole diggers. They bite, as well as kick. That, or not shaking the scorpians out of your boots in the morning.
Think about this, next time you are complaining about the price of beef.