What is something only old people say?

Boy, I sure love owning a house.

Hey, I'm heading into my late 40s and I haven't been able to say that yet lol
- So not old, cool

"Kids these days don't want to work."

After living with my grandma for so long I started saying "god willing" and people keep telling me it makes me sound old lol

Say inshallah instead

“Back in my day”

“Which was the style at the time…”

I keep saying that to my boy, but even the reference goes over his head it's so old.

Ouch! I must have slept wrong.

"I'm not THAT old, but ..."

"moderate Republicans"

You kids, get off my lawn!

pulling myself up by my bootstraps

"People don't have pensions anymore?"

No, Mom, we don't.

"Here, have a Werthers."

I'm in my 20s and have for years had a stash of these...
- Tight timeline, but I guess you could be a grandparent.

Define "Old People"

Whatever you think is an old person. Im trying to figure out if i say these things.

"Knee high to a grasshopper" (short)

"Beyond the pale" (outside social norms, I think. Maybe just strange)

"Dance maven"

"I'll just do that in my copious free time..." (sarcastically, because you are too busy)

"Copacetic" (it's all good)

"Heavy" (meaning important, grave)

I learned all of these thirty years ago from a man in his fifties. He was full of interesting expressions.

If the question is things "only" old people say, you have to exclude phrases old people say that were repopularized through media.
"Heavy" (meaning important, grave)
For example this is a really quotable line from Back to the Future, so kids would pick it up.
- Heavy? Is there something wrong with the earths gravity??
- 40 year old movies are not really a major influence on slang & pop culture...
I've started saying "beyond the pale" and "copacetic" after playing Disco Elysium
The only time I have ever heard the word copacetic and only reason I know it exists is because of a song that probably only dinosaurs and hipsters listen to anymore: Bound For The Floor.
Other than that, I've never heard it used in any context. So I'mma agree that it's definitely an old person word ( or a pretentious "I'm BeTtEr ThAn YoU" kinda word ).
- Copacetic has an interesting history. I heard about it in a video I can't currently find, but this article gives some history: wordorigins.org
You just don't get it, you keep it copacetic..

Speak up Sonny.

"Comment ça vas"

i am from Louisiana

How do you say that out loud? I wonder if I've heard it, just never knew how it was spelt.
- I am not sure how to write the -ent sound with english pronunciation, but here is my best attempt
  "kôm-mâ sâ vâ" with the ^ signifying the soft vowel

In my day.

I couldn't remember the song title Pink Pony Club and called it Hoke Pokey Unicorn the other day.... so that

Let me just talk for a while, you'll get some

Dad gum

“Nobody wants to work any more” or “kids aren’t disciplined anymore”, and “millenials…something something something” to refer to any generation younger than them.

My knees hurt.

My dad called rootbeer floats “boston coolers” and called BigBoy’s restaurants “Manners”

Im trying to keep boston coolers alive.

Shaking like a dog shittin’ prune seeds

The other day someone told me "bamboozle" is something only old people say

What should I do with my savings today?

'Like watching a monkey try to fuck a football'

'About as useful as a wooden dick on a sawhorse'

Etc.

“Do you want to go to the pictures?”

Something I once heard my sister say to our grandniece, "I saw the Beatles live."

Television set.

"Yes I remember vine"

"Are you ready to rock?"

“Nobody died in Tiananmen Square”