Well he must do, how else could he explain that 3 meals a day magically appear on the table and the pants and socks drawers refill themselves by magic, Christmas cards which he kindly bought 3 weeks ago have miraculously got writing in them, addresses on the envelopes and any day now they will magically walk themselves up the road and jump into a pillar box. His family have mysteriously got presents which have wrapped themselves and are ready to be sent/delivered or given when same family descend on Christmas morning.
Even cups left on the side magic themselves into that big white machine (no he doesn't know what it is either) and somehow there are always more in the cupboard.
Or is it the fairies?