One reason could be that some stories might worry or upset her. For example, if you got into a dangerous situation but managed to get out safely, she might be overly concerned and constantly worry about you in the future. Another reason is that some stories might involve things she doesn't approve of, like skipping school to go to a concert. She could get angry or disappointed.
You can simply change the subject whenever the story starts to come up in your mind. For example, if you're thinking about that time you went on an unplanned adventure and don't want to tell your mom, start talking about something else like a new book you read.
Well, it's hard to say exactly without seeing it. But it might focus on family dynamics and the challenges of keeping something from a parent. The style could be cartoony or realistic.
It could mean that there are some stories related to sex that one doesn't want their mom to know. Maybe these stories are considered inappropriate or private to share with a parent.
The 'Don't Tell Mom' comic is mainly about the mischief and secrets that kids try to hide from their mom. There are lots of funny moments and touching friendships. It's a great read for all ages!