Years ago a member here was talking about him and another guy (maybe Milt?) walking on the campus of a university. The guy walking with him commented that he wondered what the young women thought of guys his age walking around campus - to which he answered, "They don't even see you."

You are old when your kids have better sense than your parents.

Or they are looking for a sugar daddy while that student loan, new car lease, and the rent is past due.

Either way I try to be polite.
No reason otherwise.
Millennials onward will be facing a greater number of chaotic challenges that GenX and Boomers did not.

As for the smiling ladies, I simply smile back. I don’t really get that from “girls” ie, <29, but more so 40s and 50s. The longer my hair the more smiles. My wife likes my hair long. In the vein of this thread, I don’t like my hair long because it’s just more work: I’m older and married (happy). I don’t really care enough about the smiling ladies to keep my hair long; I prefer it shorter because it’s way more convenient to me. It just happens to get long and then needs a cut.

This happened back in 05/06 and I would have been 40 or 41. My friends family owns a Korean restaurant and his 20 something sister worked there along with him. The food was really good so I went there all the time. Our other friends would go there to eat and flirt with her because she was hot. I'm only there for the food and to see my pal. He was busy so she helped me when I placed my order. She called me, "Sir", and I told her there was no need to be so formal as we all know each other. Then she says, "My mother always told me to respect my elders." Well my pal and my other friends heard her reply and busted out laughing.

Yep.

You're old.

I was single track mountain biking on a fairly advanced trail and stopped to get directions to a new trail not on the apps and was addressed as, sir. Oh $h!t was my thought but remembered I have 30 years on them.

I was in a MTB video with youtuber BKXC, and in the comments section I was referred to as "some old guy" by some of the people commenting.