Surely this son has incestuous blood, because he has a preference for people in underwear, most often his mother's underwear. It sounds a bit creepy, but there is a convincing point here that this mother is His stepmother, she is young and beautiful, so it is understandable that this strange thing happened because this lustful son simply wanted to rape this stepmother.
![A boy's unusual hobby](https://cdn-img.vipcloudvn.com/images_new/full_1_size/lBdAy8OeQ2HMRGigw-CDrzXYZ9VqfJSpbFt.jpg)