Mortified!

As we all know, Mark memory is useless, however my memory when it comes to names and faces is almost as bad and I often have people talking to me and I have no idea where I know them from. Which led to a mortifying moment in Asda today.
I was shopping with the kids and was tired from this weekend anyway, I was trying to find the bread I wanted when Mark said 'Are you not going to say hi?' and pointed at the lady next to him:
Me - Oh hi sorry, my heads not here right now.
Her - Oh its fine Asda does that, hows things?
me - Fine, just back from Turkey so getting things organised.
Her - Oh sounds busy, not fun with kids in tow.
me - No they hate asda, well better get on with it, chat to you later.
Her - ok bye.
Me (to mark) - Who was that?
Mark - Wasn't that Katie?
Me - No!!
I was chatting to some random stranger!!
Didn't help matters that I was so flustered I turned around and put the bread in a trolley, looked and thought 'I didn't buy milk' then heard' Um, that's my trolley'
I'm never going Asda again.