I heard a three year old singing a song that was simple enough he might have been making it up. Or it might just be something I never heard before. Has anyone out there ever heard something like this?

(tune: a variant of Twinkle Twinkle) Bow-ee, Bow-ee, Bow-ee Up, Up, Up Bow-ee, Bow-ee, Bow-ee Down, Down, Down Bow-ee, Bow-ee, Bow-ee Up, Up, Up Bow-ee, Bow-ee, Bow-ee Down, Down, Down