Someone whose job it is to sit on his/her ass and take measurements on silicon wafers for hours on end. So called because after about fifteen minutes it becomes painfully obvious that it would almost be practical for your company to hire a monkey to replace you, because they could just pay it with couple of bananas every hour, and it could easily be trained to put the wafer on the machine, push three or four buttons and then sit there for five minutes until it is time to put the next wafer on. Of course, they'd never do this because you can't have monkeys running around inside a clean room.