Where do literal dogs live?

On the roof.

Why is Santa Claus so jolly?

He knows where all the naughty girls live. I actually heard this in the video game LA Noire. Thought it was pretty funny so I bust it out every Christmas.

Who's there! Cam! Cam who?

Camalot is where King Arthur lived!

Roof Jokes More Roof Jokes

Who's there! Athena! Athena who?

Athena reindeer landing on your roof!

Why didn't Sean Connery get his roof fixed?

He said he "couldn't find a shingle person to do it."