Perhaps mom catches them in a fight. In this case, she would probably separate them first and then talk to them about why they should get along. She might tell them stories about how siblings should love and support each other. And she could make them apologize to each other to resolve the conflict.
Well, it could lead to a scolding. Mom might be really angry and ground them for a while. For example, if they were doing something naughty like sneaking cookies before dinner.
If mom catches them doing something positive together, like sharing toys or helping each other with homework, she would be really proud. She might praise them and give them a small reward, like taking them to the park or buying them their favorite ice - cream. This would encourage them to continue to have a good relationship.
Maybe they were in the middle of a surprise for her. For example, they could be making a handmade gift but she caught them before they were done. Then she would probably feel bad for interrupting and join in to help them finish. Another possibility is that they were fighting, and she'd have to step in to sort out their differences and teach them about getting along.
Another reason might be that they are not following the rules. For example, if there is a rule that they can't watch TV until they finish their chores, and mom catches them slacking off and watching TV instead, she would have to step in and remind them of the rules.
Well, in this fanfic, Naruto might use his ninja skills to outwit Scyther. Maybe he'd use his shadow clone jutsu to confuse it and then catch it when it's distracted.
Perhaps Snape would force them to work together on a task as punishment. This could be something like cleaning the Potions classroom without magic or helping in the Forbidden Forest. During this time, they might start to understand each other better. Harry could see that Draco isn't just a spoiled brat all the time, and Draco could see that Harry has more depth than he initially thought.
One possibility is that Harry would be extremely hurt and angry. He might immediately confront Ginny about it. He could cut off all ties with her and distance himself from their mutual friends as well, feeling betrayed not only by Ginny but also by the false image he had of their relationship.
One possible outcome could be Naruto feeling extremely hurt and betrayed. He might distance himself from Sakura completely. In the context of fanfiction, he could also focus more on his training and his other friendships, like with Shikamaru or Kakashi. He might become more determined to prove himself without Sakura's support.
One possibility is that Sirius could be initially shocked. But then, being the understanding person he is, he might give them his blessing. After all, he has seen how Harry has grown and Ginny is a great girl.
In a more serious context, if this is part of a coming - of - age or family - relationship - exploration story, the sister might have to deal with her own feelings of discomfort or curiosity. She may also have to decide how to support her brother if this 'monster cock' is something that is causing him problems, like self - consciousness or being bullied. She could be the one to help him build confidence and accept himself for who he is.
One possible outcome could be that the boy is initially very confused. He might not fully understand what it means to be a shemale. However, if he is brought up in an open - minded family, he could start to learn about acceptance and diversity. Maybe he would gradually become friends with the neighbor and through their interactions, break down some of his own prejudices.
Well, if someone is caught with their mom's panties, it's a really awkward situation. One possible outcome could be a lot of scolding from the mom. She might be shocked and angry, thinking it's a very inappropriate behavior.