I still get ID occasionally, a while ago when I was still 35 I was asked for ID in the supermarket when buying beer.
I handed over my drivers license, and enjoyed the little double take when she realised how old I really was.
"Oh, you don't look like you're in your thirties at all"
"Oh thanks", I say, and smile.
"Actually, I can see your age when you smile"
Cheeky sod :(