Christmas songs are one of those things you just can't avoid this time of year. Whether you're at the grocery store, watching your child's Christmas performance to humming them to yourself subconsciously, they're everywhere. One popular one is 'Up on the Housetop' that was made a little more popular by the great Gene Autry. Near the beginning of the song is a lyric I had been misunderstanding this whole time. Do you know what it is?