Why was the Christmas tree in a good mood?

Because it was branching out and having a tree-mendous holiday season

Why did Santa need an extra large desk at the North Pole?

He had a lot of Claus-es in his contract.

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 are Christmas lights such great comedians?

Because they always know how to lighten the mood!