Everyone Poops
Everyone Poops (Taro Gomi)
Happy Poop, Sad Poop: Everyone Poops, Even You! (Happy, Sad Books)
What's My Body Telling Me?: Your Body Isn't the Problem. It's the Solution.
The Gas We Pass: The Story of Farts (My Body Science)
WTF Happened to My Body?: Fixing the Aftermath of Having Kids, No Matter How Long Ago It Was