Santa is a ninja!
Have you ever thought
about it? How could a fat old coot get from house to house around the
world in record time? The only reasonable explanation is Santa is a
ninja! This also explains why you never see him, he probably uses
invisibility jutsus'. But wait, maybe Santa is really a robot! And the
trees act as homing beacons for him, he has little chips implanted into
'em. And if he was a robot then he could just use some teleportation
mechanics. Or as most people like to think, maybe he really is just a
fat old coot. You never know with Santa.