When we got to this part, the digestive system, we explained how food goes in and comes out as pee or poop. This was a concept he could grasp.
Fast forward to yesterday. Gramma, Il Tonino, and I were eating dinner together.
IT: eats a bean from his soup.
G: your body loves the bean! Your tummy goes yummy!
IT: and then it comes out as poop! with great emphasis on making the sign for 'poop'
G: sudden shocked and slightly amused look on her face
Me: total failure at not laughing
I guess he learned something from that book.
Ahh... kids.