Hush, little baby, don't say a word.
Papa's gonna buy you a mockingbird

And if that mockingbird won't sing,
Papa's gonna buy you a diamond ring

And if that diamond ring turns brass,
Papa's gonna buy you a looking glass
[ Lyrics from: http://www.lyricsfreak.com/c/carly+simon/hush+little+baby_20724811.html ]
And if that looking glass gets broke,
Papa's gonna buy you a billy goat

And if that billy goat won't pull,
Papa's gonna buy you a cart and bull

And if that cart and bull fall down,
You'll still be the sweetest little baby in town