1. An expression to refer to those Americans who live unexciting or unexotic existences. Typically used by truckers, construction workers, or others whose livelihoods aren't geographically dictated.
2. Boring middle class white people who live in suburbs.
Sam: All they do is bitch about their commute.
Bob: Of course. They're duffers. That's what they do. That's their biggest problem.