It's well known in my house that "old" means "4 or more years older than my mum". Whenever my mum gets a year older, the definition of "old" moves one year up.

Also, my dad is 5 years older than her.

I thought my grandparents were old, but old has legitimately changed a lot. In the 80s my maternal grandparents (then in their late 40s or early 50s - about the age I am now) looked like today's late 60-somethings. Neither had any of their own teeth as it was somewhat common for dentists to recommend full replacement at the first signs of trouble for their generation. I don't think either had ever worn sunscreen before I was a kid. My grandfather's appearance was affected by diseases I never had to deal with like Scarlett and Rheumatic fevers. My grandmother got her hair set with nasty chemicals on a weekly for 30 years (I don't know how it wasn't so damaged it disintegrated).

My grandfather became the breadwinner for his siblings at 13 too, that's gotta age a person. FYI: In those days you just had to mail in a form to get your Illinois driver's license and the state never checked the details.

When I was in grade school in the 60s, we had a math problem... "how old will you be in the year 2000?" I calculated 42 and thought "OMG, I'll be nearly dead by then"...

Years ago my dad and I were working on something and he stood up after having been kneeling on the ground. He made a series of moans and grunts on the way up and I asked "Dad how old are you?". "Thirty" he said. After that I thought life was over after thirty. Boy, was I wrong. Also I've been making the same groans when I stand up for the past twenty years regardless if something hurts or not

I had a pakt with a friend in high-school, that we are going to jump out of a plane without a parachute when we turn 35. We couldn't imagine wanting to live being that old. I'm kinda glad we lost touch, although it might be that she didn't make it till 35.

A couple of my favorite aging quotes.

"A man has three ages; childhood; young adult; don't worry you look fine." No idea who said it.

"A man isn't old until there are no women his own age he finds exciting. A woman is old the first time she looks for a dress to make her look younger." Xaviera_Hollander

https://en.wikipedia.org/wiki/Xaviera_Hollander

I remember my grandfather's 50th birthday party and all the balloons and such saying "over the hill", and I took that to mean that 50 was when you turn old. Had no idea how long most people lived, but I probably would have guessed somewhere in their 60s (fairly accurate for the time).

I remember as a child having more than one family member who were in their 90s. So old to me was 70s+

When I was 5, I thought the teenagers bagging groceries were old. But old is always grandma's age (while you have a grandma)

60. I thought "middle aged" was 30. If 30 is the middle, 60 is the end.

As a really young kid I thought everyone was born their age. I was not a smart kid.

I don't remember but my kids say:

Under 30 is young

30-60 is middle aged

60-90 is old

Over 90 is fucking old

I don't plan to be old until 70 though, afraid I'll live till over 90 and don't think it makes sense to say you are old until close to the end.

I like to call anyone older than me old because it's funny and I perpetually feel like a child.

When I was little I thought my parents were old, now they are in their 60s and I think they are young, and I am the age they were and still feel like a child. Otherwise I'm not sure I really had a concept of age as a tie to mortality when I was younger.

Old old? Was my great grandmother who got to...80 or 90. Must have been at least 80, given my mother's and grandmother's ages. She was old old.

Grandmother was old, but not so much.

Mother and everyone in her age range were "adults" but not old. Adults did things. Old people cut out papery dolls for me and my twin, that was their jobs!

As a child, I came to consider 40 to be basically dead and pointless, a withered husk clinging to life and a sense of relevance like the flagpole of a sinking ship.

As someone about to hit that mark, I still haven't seen any new information that changes my opinion on that.

Our cognitive ability peaks around our late 20s. We humans love to delude ourselves about our mortality with comforting thoughts like "well my experience makes up for it, herp derp," but that's just something to help us sleep at night as we degrade at an ever accelerating rate.