I will have you know that I NEVER believed in Santa Claus! I've always been an asantaist!
(Well, I did of course believe in Saint Nicholas ... but not SANTA!
Actually, while on the subject of childhood beliefs, realising that it was my parents who hid the easter eggs was my very first baby-step towards Atheism.
BTW, whereabout in the UK are you from? PLEASE be Welsh!