The cats nestle close to their kittens.
The lambs have laid down with the sheep.
You're cozy and warm in your bed, my dear.
Please, go the fuck to sleep.
|—Bowser reading Go the Fuck to Sleep
||"I have absolutely no idea what's going on."
Go the Fuck To Sleep is a bedtime story created by Adam Mansbach and illustrated by Ricardo Cortes. In Shoot to the Observatory in the Sky, Bowser reads this to some Lumas & Kirby.
It reappears in SMG4: High School Mario where it is read by Mace Windu to Mario & friends in English class, which causes Mario to fall right asleep.
Mace Windu reading the book is an allusion to the fact that the actor that portrays Windu, Samuel L. Jackson, was the one reading the original audiobook in the first place.