I saw this on the NBC, and thought it was hilarious. I know of a few parents who might appreciate it.
ETA: This is part of what the OP on the NBC quoted:
Here is a sample verse:
The cats nestle close to their kittens now.
The lambs have laid down with the sheep.
You're cozy and warm in your bed, my dear
Please go the to sleep.
Re: rp: "Go the F**k to Sleep" book.