My worst would have to be working in housekeeping for a local nursing home while I was in college. I had to collect dirty (read: smelly, piss-stained, crapped in) laundry and run it through the cycle and was also on bathroom cleaning duty for a while. I thought that job would never end. I know you're thinking that they can't help it, but I swear some of them pissed themselves on purpose just to get their jollies from annoying the staff.

However....my uncle and I were having this conversation last weekend and he was telling me about a job where he worked the night shift doing sercurity at the county mourge. he was in charge of collecting bodies recieved, tagging toes, removing and catalouging personal items and jewlry from the bodies and assisting on emergency autopsies. That just might be the most awful job I've ever heard of.