Tis the Season for Many Merry Earworms

For a couple months leading up to Christmas, we’re all infected with a pernicious scourge: earworms. Sounds like a bloodsucking parasite, but “earworm” (which comes from a translation of the German word "Ohrwurm")  is just a psychological term for a song that you can’t get out of your head. During this time of year you can take your pick of earworms, wheedling their way into your brain in every public place you go.