Why did Santa's reindeer go to the North Pole's IT department?

Because they had a lot of 'deer'-pending software updates to install!

Why did the snowman go to the party?

Because he heard it was a cooler event.

What did the gingerbread man put on his bed?

A cookie sheet

What do you call Santa's fear of being stuck in chimneys?

Claus-trophobia.