Because Dec 25 = Oct 31
A Barbecue. Christmas crackers are just full of laughs.
Santa Jaws!
Because Oct 31 == Dec 25
A ghoul Yule!
Because OCT 31=DEC 25
They both worry about the position of colons.
Oh, wait. That's a hardware problem.
Because DEC 25 = OCT 31
Because OCT 31 is the same as DEC 25.
Because their daddies were mummies.