I think the thing that makes the "SEVEN!" joke dirtier than the others is that as a child, I really had no clue what was going on, I was just laughing at the funny way she was saying it, but with all the other jokes, a child could find a way to make it funny (I thought the pages stuck together thing was he spilt Jam or something on it so the joke was that he was clumsy, and "how do you expect me to grow if you won't let me blow" most kids thought was farting)

It makes me laugh SO much that a lot of us, when we were younger, thought the, ”how do you expect me to grow if you won’t let me blow” joke was referring to farting.