Yes! I love that. I used to say something like, "You'd be surprised how much one can learn by living fully in the world!" Then, if I had time and the person seemed interested, I'd share a short story or two as an example.
Like Sandra said, keep in mind a few cool stories. This is where watching our kids becomes so valuable. Playing with them when you can is great too because you can bring those stories of a shared learning experience into your conversations with others. It's hard to argue against that kind of personalized immersive investigation.
As unschoolers, we get to see up close and be a part of our kids' learning. That was just so cool and such a great privilege to me. Doing so enlightened me about all of our human potential--my own included! That, in turn, gave me a bit more compassion for the folks asking questions. I came to understand that they, most often, just wanted to learn as well. I figured I might as well make answering their quesitons fun and interesting for everyone if and when I could. Sometimes I didn't have the energy for that, and that was okay too. :)