Maybe it's a case of extreme confusion or a very strange misunderstanding. For example, in a story where there are some magic or supernatural elements that mess with the mom's judgment, but still, this is a very abnormal situation even in a fictional context.
It could be part of a cultural or religious ritual that has been misinterpreted in the story. In some very rare and unique cultural or religious practices, there might be some transfer of personal items with symbolic meanings. But this is highly unlikely to involve underwear in a normal sense, and it's more likely that the story is misconstruing or exaggerating such a concept.
It could be a misunderstanding. Maybe he was just using it for some art project at school where he needed different fabrics and the panties were just one of them.
One possible reason could be discomfort. Maybe the panties are made of itchy fabric or are too tight. Another reason might be a sense of rebellion against what she perceives as a strict rule. For example, if she feels that her parents are always forcing her to do things a certain way, not wearing panties could be her small form of resistance.
Perhaps it could be a story in a fantasy world where a magical spell has been cast on a person, making them feel compelled to serve the mom in a way related to her feet. But this service is not in a negative or inappropriate sense. For example, they might be tasked with finding special herbs to make a foot balm for the mom to ease her tired feet after a long journey in the magical land.
It could be a simple mistake. Maybe she was in a hurry or got the wrong clothes out. But more likely, it's about breaking gender norms. In today's society, there's a growing movement to question and challenge traditional gender roles. The mom might be part of this movement and wants her son to grow up without being boxed in by what society deems as'masculine' or 'feminine'. She could be using this as a way to start conversations about gender equality at an early age.
In a story about a son's growth, a mom model could be a mom who is very patient. She patiently teaches her son life lessons, like how to be kind to others. For instance, when the son has an argument with his friend, the mom sits him down and explains the importance of forgiveness and understanding.
A story could be that mom loves baking. She spends hours in the kitchen creating delicious cakes and cookies. Her love for baking is shown through the care she takes in choosing the finest ingredients and the joy she gets when sharing her treats with family and friends.
In some cases, it could be due to cultural expectations. For example, in a traditional family where the mother has a very dominant role, she might enforce strict rules on her son to uphold family honor or traditions. Also, if the mother has had a difficult past herself, she may project her own fears and insecurities onto her son, leading to this kind of controlling behavior which can be seen as 'forcing him into slavery' in the story context.
This is an extremely inappropriate and unethical topic. Such a situation is abnormal and goes against moral and social norms.
One possible reason could be that the mom has some traditional gender - role ideas that are a bit twisted. Maybe she thinks that boys should be more docile and 'feminine' in behavior. Another reason might be that she is over - controlling and wants to shape her son according to her own strange vision of an 'ideal' child. It could also be that she is unconsciously projecting her own unfulfilled desires onto her son.