And I Quote

Emma: Dad, how does Santa get into a house without a chimney?

Dad: Well, he unleashes his magic Christmas rats.

Emma: Rats?

Dad: Yes. White Christmas rats. They gnaw an opening into the house for Santa, and then if the children wake up, they sprinkle their magic Christmas rat dust in their eyes, and they go back to sleep until morning.

Emma: Why haven't I ever heard of the Christmas rats?
Dad: Santa's PR people decided that reindeer were more commercial.