We've heard these songs all our lives, and we still fumble a verse or two.
If it's one of the lesser carols -- say, "Jingle Around the Rocking Tree" or some other '50s novelty number we still warble for no apparent reason -- you can mumble a few words until you reach the safety of the chorus. But if you've only heard the famous verses, the latter lines can trip you up.
How well do you know your songs and carols? Our quiz will test your knowledge.
Good luck. (Santa will be watching.)
None of the lyrics really make sense, do they? But when we hear it, we nod along and sing it to ourselves. It's part of the season's soundtrack and if you ever get stuck, just mouth the words "rhubarb macaroni." It'll look like you know what you're doing.