What Else Doesn't Andy Rooney Know?

Self-described "average American" Andy Rooney was recently startled to discover the existence of such rare pop culture creatures as "Lady Gaga" and "Usher." What other mainstream, vastly popular phenomena has professional old person Andy Rooney never heard of?

To hazard a guess, here's a collection of random things that most people in America know, that Andy Rooney probably does not.

What else? And, is there a unifying principle or lesson to be gleaned from the things Andy Rooney does not know? It's like a portrait of modernity, drawn with negative space.

Previously: Andy Rooney on Lady Gaga: 'Who?'