Physically, yeah, feel a bit old. Mentally, as in cognitive, a tiny bit old. I don’t “feel” my age, and from my sense of humour, yeah, still as silly as I was a long time ago. Do I look it? Well, hair is grey, a bit thinner than it used to be, maybe a little bald patch appearing, but that’s about it.
What does make me realize what age I am is when I see things like, 50th Anniversary of Star Wars (yes, the first one, prior to it being “a new hope” and “episode IV”) and also “newer” stuff like Back To the Future. The same thing is true with music. I do like it when the youth are exposed to what they assume is new music, a good example being Running Up That Hill being in Stranger Things (dang, those kids would be older than I am if they’re aged up to today 😃 ).