AIBU to think it was a bit strange (and tactless) for the cashier on Sainsbury's to repeatedly address me as 'mum', e.g. did, you get everything you wanted, Mum? How many bags did you use Mum? Have you got a nectar card Mum? I didn't have any children with me, and the only suggestion that I might be a Mum, was the bag of chicken nuggets on the conveyor belt? Or is the stress of motherhood really that obvious from my appearance?!