I don’t know. Can I trust the people who say “I’d never guess you were as old as that?” What are they going to say, “Gee, I thought you were much older”?
It’s been a long time since I was carded, but the last time, I was about 34. And I was 48 when the girl on the boardwalk guessed 36. She had to give me a plush toy, but first she insisted on scowling at my driver’s license.
I don’t think I dress, talk, or laugh like someone who gets senior discounts at the movies (although sometimes just for fun I go for the student discount instead), but I am moving with much greater care and caution ever since I swore an oath never to break another bone.