I'm not sure if it's a song, I've only heard it read. It's based on Clement Moore's "The Night before Christmas" and it's called "A Visit from Chantey Claus" It's funny as hell, about a visit from the pirate known as "White Beard" , stealing stuff instead of leaving stuff etc.

Wincing Devil   >;-( A hat is a LOT cheaper than a toupee, and nobody wonders if it's a hat!