Anytime someone calls me something I was called when I was a teenager, it makes me grin.
I got called a young man on the street the other day... I guess when I shave my head, people can't tell that I'm bald on top, and I look younger than I actually am.
One of the assistant instructors on my geology field trips is 3 years younger than me. We found this out on the Sierra Nevada trip this summer. He was blown away, he thought I was in my late 20's.
He had no idea.