Honestly. The cheek of some people. I like the kind that apologises profusely again and again, even before you've proven that you're over 35 or whatever the gauge is nowadays.
But today and so many other days I wander over to the checkout with a few beers, and before I've even set them down and said 'Hello, just these please', I get 'ID.', or 'Got ID?', or 'Let me see your ID...'
It's as if I'm commiting a crime by wanting a beer. What's next? You don't know, do you.