i remember when i was in my 20’s and would go through the drive thru at a fast food place, and they would sometimes give my food, and say " have a nice day, sir" and it bothered me, i would think jeez im not that old. it was always some teenager working the drive through saying it.
but now today when that happens im not so averse to it haha. im like yeah show some respect you little punk haha. it no longer bothers me, and it kind of makes me feel good. funny how things change.
I remember the first time some kid called me “sir”. It felt a little odd but I took it in stride and it actually felt a little good; like you say, it can be a term of respect. Now, I get it all the time, especially at work. I work in an army reserve building as a janitor and a lot of the young soldiers call me “sir”.
It can be a negative thing though. Sometimes I’ll be talking to someone on the phone and I’ll make a mistake and embaress myself and they will say “sir” in a tone of voice, that means act your age.
The funny thing is that I’ve never called anyone else sir that I can recall.