What is claustrophobia?
Fear of Santa.

Knock. Knock.
Who's there?
Hanna.
Hanna who?
Hanna partridge in a pear tree.

What is a computer's favorite Christmas carol?
Array in a Manger.

How would you fire Santa?
Give him the sack...

What did Santa say when his toys misbehaved?
Toys will be toys.