Self-explanatory sentence
First a clarifying note on the title, because I'm getting a whole lot of links lately via the term "explanatory sentence". When Professor Polistra lists self-explanatory sentences, this is a special and distinct category that has nothing to do with the ordinary meanings of "explanatory sentence". A self-explanatory sentence sums up an entire life or worldview in a few words, usually without conscious intent. Thus the sentence is a "self-explainer".
With that out of the way, here's a new one from a CNN anchor:
"Very few people outside of Bill Gates or Warren Buffett can purchase anything without credit."
Obviously this doesn't say anything about Gates or Buffett, but it tells you everything you need to know about the incestuous closed circle of the media elite. They are incapable of understanding thrift or savings or frugality. They understand "living large", living far beyond your means, and they've never known anyone who "lives small".