Don’t you hate it when you show your age to a young person who doesn’t quite get the reference?

It happened to me today while I was working one of my four part-time jobs.

I was sitting in the break room at the car dealership where I work, visiting with a courtesy driver who’s about eight years older than I am.

I’m 65; he’s 73.

In walked a young salesman. We started talking about how his sales business was going.

The young man made note of how popular SUVs have become “since the price of gasoline has gotten to be so cheap.”

My courtesy driver friend and I exchanged looks — and then laughed out loud.

I told my young salesman friend that he was “talking to two fellas who remember when gasoline sold for about a quarter a gallon.” My courtesy driver friend mouthed the words “19 cents.”

My young friend, who’s 26 years of age, took note of when gasoline “first hit a buck 50.”

So, there we have a clear definition of what I’ve termed the “new normal” at the gasoline pump.

When gasoline sells for $2.50 per gallon for regular unleaded and that’s considered “cheap,” well, that signals a new way — in my view at least — of assessing the relative price of a common commodity.

I reminded my good friend — the young man — that when gasoline hit $1.50 per gallon, some of us became apoplectic.

I don’t think he quite got it. My other friend — the older one — surely did.