WELLLL, obviously we have a GRINCH in Whoville!

He's climbin' in your chimney
He's snatchin' your presents up
Tryin' to take 'em, so you better hide your gifts, hide your tree
Hide your gifts, hide your tree, hide your gifts, hide your tree
And hide your roast beast, 'cause he's stealin' err-thing out there.

EDIT: A few minutes after posting this, I discovered Antoine Dodson had actually done a "Christmas Intruder" parody about Santa on Lopez Tonight.