While doing loops of Prospect Park, my most frequent ride by far, I got blown away 2 different times by 2 different 20 something girls. And the funny thing was the conversation was exactly the same both times.
Me, as I speed up to catch her: "Do you race?" They were both doing a steady 22+ on the flats without a tailwind or a draft! Neither looked like the racer type, nor had race worthy bikes (A Lemond and a Giant TCR C2, not bad but not racing bikes)
Her: "no, but I'm training for a Triathlon, how about you?"
Me: "No, I'm getting too old for that. I bought the bike as a 50th bday present for myself"
Her: "I hope I'm still going like that at 50." And then I realize I can barely breath keeping up with them. And they drop me.