On leaving the supermarket my daughter held hand tightly and began to  chat about Santa as she had seen a man in a beard. She said I dressed as him and I pretended to be him when she was little.  
We laughed as I protested it couldn't be me I don't have any reindeer or boots and she shouted "Yes you did".
So who ate the mince pies?
Who left the snowy footprints?
See it was Santa!!
I heard a womans laughter.. then I knew you had been listening.
You smiled at my daughter as you got into your car and she said he is Santa!!
That was the moment you simply looked straight at me, smiled eyes wide and it was over.
You drove away.
A fleeting glance that lasted for micro second but defined me as a father.