What's the most ridiculous thing you've been id'd for? I'm 34 and just got id'd for an energy drink

I was in my work uniform as I always am when I go to this tescos express. The cashier has seen me countless times over the years and I quite often choose a monster to go with my meal deal yet she decided today she was going to Id me for it. I couldn't believe it. She said it was part of the think 25 policy but their policy is they don't sell energy drinks to under 16's. She clearly doesn't know her own stores policy so I just showed my driving license but I did think it was ridiculous. I'm old enough to have a 16 year old myself