How Exactly Is "Middle Class" Now Defined?

It doesn't seem like anyone really knows anymore.

About two years ago this week, I went to a guy’s 60th birthday at some country club. As you can imagine by combining the number “60” and the words “country club,” it was a very specific type of affair where guys stood around and mostly discussed (a) money and (b) golf. I fit in incredibly poorly at this event, but still stayed for about two hours, hopin…