Had one of those awkward California conversational moments today when I used the term "shop rat" with someone unschooled in the nuances of Flintoid lingo. I then spent ten minutes unsuccessfully trying to illustrate the various uses of the term. I felt like a Brit trying to explain "bollocks" to an American.
But it got me wondering...is shop rat a Flint-only term? A Michigan term? An auto industry term? And where did it come from? When did it start being used?