I was a scientist, and a pretty good lab man, but since we had a lot of delicate equiptment, we couldn't let the janatorial staff in the lab, so I also cleaned all the chemical ware, changed the dirty oil in the vacuum pumps, swept and mopped the floors, and such like highly intellectual stuff.

You don't know what a dirty job is until you've had to empty a chock full septic tank with a shovel and wheel-barrow, and dig up and clean the old drain tiles, so you can reuse them. Once was more than enough for me. But maybe a nurse has just about as bad every day.