You can clearly see that these lyrics can't be sung to this tune. I've listed the actual number of syllables for each line.
Bijoux, Cailloux - 4
Head, shoulders - 3 (You could fix this by calling the song "Head and Shoulders, Knees and Toes" as it is sometimes sung.
Genoux, Joujoux - 4
Knees and toes - 3
Chou-ou-ou-oux - 1 (artificially made into 4)
And eyes and ears - 4
Poux et Hiboux - 4
And mou-outh and nose - 5