What really gets me about "Little Drummer Boy" is the irony of it having a really, really boring rhythm. This kid is a drummer, he's playing his very best, and he comes up with "pa-rum-pa-pum-pum"?!?!? What is he, playing with the stick held in his teeth?!
And as someone who's been to more than my share of Christmas Eve services, can I say what a breath of fresh air it would be to hear "I played my drum for him, pa rumpdida-rumpdida-chikachikachika-bizzow"
And let's not even mention the fact that right after childbirth, the last thing anyone wants is a drum being played next to their ear. "The finest gift you bring"? Dude, get Mary a pillow. Get some fresh hay.
What really REALLY gets me is when the carol is performed with the drumming part obviously done on a drum machine. (I'm looking at you, Bob Seger.)