The Power of Pooping Other Books in This Series

Why Do Roller Coasters Make You Puke? Why Do Roller Coasters Make You Puke?
Why Do Roller Coasters Make You Puke?
2017
Who Invented Underpants? Who Invented Underpants?
Who Invented Underpants?
2022
Can Holding in a Fart Kill You? Can Holding in a Fart Kill You?
Can Holding in a Fart Kill You?
2015
Why Does Bright Light Make You Sneeze? Why Does Bright Light Make You Sneeze?
Why Does Bright Light Make You Sneeze?
2018