You are old when
Assuming that you have any hair on you head to get cut.:poke:
I have a full head of blond hair, on top of my head, at age 68 that people tell me that i look good.
Kinda proud, that i do still have hair, and didn't inherit the male pattern baldness gene, from anyone.
BUT my hair grows super slow due to a chemotherapy tablet(s) that i take every day, for a bone marrow, white blood cell, cancer, disease, mutation, (whatever you want to call it) keeping my number within specification.
So getting old, hasn't affected me in that department.
Lucky for me.