A person required to operate simple equipment or machinery
as part of a menial
job. A great put-down when accompanied by the name of the item they're forced to use every day.
Used creatively the term monkey is another fine contender
for the same role.
Wesley: "Sean tried to tell us he was the office's
Commercial Manager, but it turned out he just makes tea."
Aaron: "What a jumped-up
Paula: "I'm forty years old and you're demoting my role to checkout jockey?"
: "Yup. Close the door on your way out."