We're all getting older every day, like it or not. The passage of time is something a lot of us would like to reverse. Perhaps this gentleman, so wonderfully photographed, is wishing he had his youth back to do it all again too.
Good catch. It's hard to tell if that glance is irritation, suspicion, or curiosity. With all the time on his hands, I wonder what goes through his mind. I'd be thinking of the past, the future, what's for lunch, and how my favorite team is doing :-)