"Rudolph's Operation" joke

Christmas was over. Santa and his reindeer finally had a chance to
rest. And they deserved it. They had done a good job.
Rudolph had a chance to do something he had wanted to do for a
long time. He made an appointment with a plastic surgeon because
he was so sensitive about his looks.
However, it wasn't his glowing proboscis that he wanted changed.
He was proud of his nose and the help he had given Santa because
of it. No, he was sensitive about his long ears which were much
more prominent than the ears of the average reindeer, or bear, for
that matter.
So one week after Christmas, he let the good doctor do the
reconstructive surgical procedure, and since that time, January
1st has been celebrated as... New Ears Day.