Reverse babies are a rare baby that act reverse from a baby, they cry and scream when there happy, and giggle and laugh when they're sad, they hate milk and like naps.

Head shoulders knees and toes babies are babies who always listen to head shoulders knees and toes, if you stop or change the song they will cry a bunch and throw a fit, they cry when they go to sleep because they can't do head shoulders knees and toes anymore, they only know the words to head shoulders knees and toes.