I overheard a kid singing "do you hear what I see" one year...
totally not related to Christmas carols but there used to be this car salesman who did commercials for "Cal Worthington and his dog spot" only his dog would always be like a monkey or giraffe or something strange. Well the song would go "go see Cal, go see Cal, go see Cal" at the end and I always thought they were saying "kitty cow, kitty cow kitty cow" and I always wondered how they could have a cat-cow for a pet. Confusing! *LOL* i was grown before i knew what the heck they were talking about.