An ear worm, of course, being that song that gets in your head somehow and then you can't get it out....

Every morning I log on and check out NT, and every morning I peek at the Song Title game, and every morning Polar Express posts just before I log on, and so EVERY MORNING I walk around for an hour screaming,

OH the moon shines toNIGHT on pretty RED Wiiiiing, the breeze is SIIIIIIGHing, the night bird's CRYYYYYYYing....