ARG!
I have discovered one of the most annoying silly things in the history of the universe: a five year old incessantly singing a Christmas carol with the words all wrong, and refusing to correct it or stop singing it. After 45 minutes of listening to "Deck the halls with mountain surgar" I want to pull my hair out, but I can't really do anything about a little kid singing without being unfairly mean. But golly, mountain sugar doesn't even make sense! You can't deck halls with it! Boughs of holly make much more sense, but try using logic with a five year old!