In the Heartland people are polite. We smile and nod when passing each other, politely wait our turn in queues, quietly whisper judgmental comments to each other so the person we are discussing won't hear us and feel offended.
When eating together, we leave the last serving for each other--which usually means for the host or hostess, once everyone has gone home, as no one cares to break this unwritten law of polite society.
These are some of the ways Heartland people behave differently from, say,