What do you call a snowman with a six-pack?

An abdominal snowman

Why did Santa send his elves to conflict resolution training?

He wanted them to learn how to 'workshop' their differences.

Why do parents always hear bells ringing after Christmas morning?

Because every toy assembly completed means an angel gets its wings!

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

Claus-trophobia.