Why was the snowman invited to all the holiday parties?

Because he's a cool guy to have around!

What do you call a Christmas tree that loves to solve mysteries?

A Spruce Lee investigator.

Why did Santa hire a quality control expert for his Naughty or Nice list?

He wanted to ensure there were no claus for concern.

Why did Santa's elves start a union at the North Pole?

Because they wanted to Claus for better working conditions