Out, out, damn'ed carol!

Is there a particular Xmas or other holiday carol/tune that consistently gets stuck in your head every year? It doesn't have to be one you like (or dislike). Just one that for whatever reason, lodges itself in your cerebellum and won't let go.

For me, it's "Good King Wenceslas".

Kitty Help.

Everyone together: Awwwww.
He does this every time we change the bedding.
( Your present: cut for bandwidth and cuteness. )