Well, first you should have an open conversation with her. Ask her why she has this request. Maybe it's just a joke or part of some kind of couple's role - playing she has in mind. If it makes you uncomfortable, be honest and tell her how you feel.
Sharing stories like this is completely unacceptable. It violates the standards of decency. We should focus on positive, respectful and appropriate topics in our conversations to create a healthy and harmonious social environment.
If a boy is forced to wear panties, the first step should be to remove him from that situation immediately. Then, it's important to provide a safe and supportive environment for him to talk about his feelings. Contacting a child psychologist or counselor can also be very helpful to deal with any potential mental trauma.
In the story, she could be making a statement about modern relationships. She wants to be completely open and honest with her husband about her body and her choices. By not wearing panties, she is showing that she trusts him completely and that there are no secrets between them when it comes to her physical self.
It's a rather personal choice. Some might argue it's inappropriate in public settings as it goes against social norms of modesty. But in a private, comfortable home environment, it could be about personal comfort or a form of sexual liberation within the relationship. However, in public, it can make others uncomfortable and may violate certain decency laws in some places.
There are several types. Thong panties are very minimal and are great for wearing under tight - fitting clothes as they leave minimal visible panty lines. Boyshort panties are more like shorts and offer a lot of coverage and are often very comfortable. Then there are cheeky panties which show a bit of the buttocks but are still more covered than a thong.
It's not a simple matter of being appropriate or not. In different cultures, the perception varies. In some Western cultures that are more liberal, it might be seen as a bit of a risque but not completely unacceptable behavior in certain private situations. But in more conservative cultures, it would be considered highly inappropriate. As for reasons, it could be related to body comfort. Maybe she finds traditional undergarments restrictive and just wants to feel free.
One possible story could be that mom makes me wear panties because she thinks they are more hygienic. For example, when I'm going for a long day out, she insists that panties made of breathable fabric can keep me comfortable and clean.