This tracks for Affton. It's a county municipality of St Louis, MO well known for delightful barely-graduated-high-school hoosier antics. There is a good chance the truck floorboard is littered with empty airplane shots and scratch off lottery tickets.
Yeah. Hoosier is used colloquially in St Louis to describe inconsiderate and trashy people. By 'trashy' I mean people who literally wallow in their own filth strewn properties or vehicles.
Is it classist? Yes and I don't care. I'm more of a progressive considerate redneck myself.