I was about five (age of naivity) as I remember and my dad proposed me a game: we would both dress up as Santa Clauses and see which one of us looks more like Santa to my sister.
My mom had made us Santa coats some time before and we both wore beards, mustaches and Santa hats so my sister (who was about three) would see us parading in front of her on Boney M Christmas music. We had lots of fun...and I did all of this with a purpose: I thought that if the real Santa saw me play his role well he would bring me all the stuff on the list I'd written to him....
Miss those days