How does Santa. . .

Quoth Robert-

"My first question is, if Santa is so fat, how does he fit down the chimney?"

''My second question is, if Santa is so big, how come you don't hear him walking around in your living room?"

"How does Santa get his sleigh to stay on the rooves of houses that are not flat or big enough? Well, I think that the reindeer have sticky pads on the bottom of their feet. That's my hypothesis."