It depends on the specific aspects you're focusing on. Different readers might have different interpretations and answers based on their understanding.
You can learn about courage and standing up for what's right. The main character's journey shows how important it is to have the guts to do the right thing, even when it's scary.
I'm not sure specifically as it could be many things. Maybe it's about a boy who was dared by his friends to do something related to a diaper, like wearing one as a prank.
It could be that in a schoolyard, some naughty kids dared a shy boy to take a diaper from the school's nursery (if there was one). The boy was really scared to do it at first because he might get in trouble. But after much coaxing from his peers, he finally mustered the courage to go in and grab a diaper, and then he had to face the consequences of being caught or not.
The experiences can vary greatly. Some girls might have overcome huge obstacles to achieve their dreams, while others might have found unexpected support along the way.