The grown-up world? What's that?

So last weekend we all went to Cincinnati and I had the pleasure of meeting my sister's latest boyfriend, Zach. As we were sitting down for dinner at a local restaurant, a rather heavy set guy walked by and Zach mentioned that he had on a "Chippendales" shirt. We both laughed thinking it was funny. I looked at Zach and said "do you know the difference between Chip and Dale?" With a puzzled look on his face, he answered "No, what?" I respond that Chip has a brown nose and Dale a red nose. There's a pause and then Zach said "Wait, I'm confused..." I looked at him like "how can that be confusing?" at which point we both realized that we were talking about two completely different things. Him - Chippendales and Me - the mom that I am - Chip and Dale! We both burst out laughing so hard we were crying. How embarrassing! Has it really been that long since I was in the grown-up world?