I am a filmmaker, writer, and teacher. My movies are not good for kids. Too scary and creepy. But my sense of humor, as well as my son's sense of humor, is very kid-friendly. Much to my wife's chagrin.
My son Gibson created Fartacus when he was nine. He has put his whole life experience into his creativity. Which means he likes to play around like a superhero. A farting superhero. So he's writing from the heart.