It's a sign you ARE getting old.
As Mancini would say, "It's Normal"...
I was watching something on TV at a mates house. I commented one of the actors looked like Jimmy Nail from Auf Wiedersehen, Pet. His 18 year old son asked "Who's Jimmy Nail?" and "What's Auf Wiedersehen, Pet?". I quickly realised that for a an 18 year old, that was a understandable comment. So i quickly tried to explain that he was an actor who also sang "Crocodile Shoes" in the series of the same name.
His brother piped up "I thought Elvis sang Crocodile Shoes", "Nah" his brother replied, "Elvis was a motorbike stuntman who jumped over buses".
We got in to a lengthy conversation about who they knew from the past. I can understand maybe Steve Austin (the six million dollar man) getting forgotten about. But i was amazed (and a little sorry) that they had never heard of John Wayne. And when they said they thought "Knight Rider" was a wrestler, i gave up.
Later, they were watching "Mean machine". I heard one brother say to the other that they thought it an odd for Vinny Jones to be in a film about football.
I started to laugh, and explained his "earlier" career. They didn't believe me!
We had to google it to prove me right.
Any way, i think i should get back to my pipe and slippers...!