I was on holiday with my wife, visiting old haunts of my youth. I wanted something to read and went into a charity shop to see what I could find.
I thought I recognised the old lady serving at the counter as someone I had been at school with. I fancied her at the the time. But she looked so ancient and wrinkled I thought I must have been mistaken.
When I went to pay for my book I asked her what school she had been to and I realised when she told the class she had been in that she was, indeed, the person who I had thought she was.
'You were in my class at that school' I said.
'Oh really' she replied 'what did you teach?'