It's not appropriate. Such stories often involve private and potentially inappropriate family relationships that should be respected and not made into a form of entertainment for viewing.
One interesting mom and aunt story could be when my mom and aunt were young, they once decided to bake a cake for my grandma's birthday all by themselves. They mixed up the salt and sugar though, and the cake was a disaster but it made everyone laugh.
I don't have any specific stories about mom and aunt's feet offhand. However, it could be something like a story of how mom and aunt used to walk long distances when they were young, and their feet carried them through all those adventures. Maybe they walked to the local market every day, and their feet became a symbol of their hard work and determination.
In most legitimate and well-written stories, such characterizations of mom and aunt would be highly unlikely and out of the ordinary. Stories usually focus on more meaningful and positive aspects of characters.
Definitely not. Such a situation can be very uncomfortable and inappropriate. Sex - related topics are sensitive, and they should be handled by trained educators or parents in a proper context, not by an aunt in the form of stories which could mislead or be inappropriate for the listeners.
One common type of story is when the aunt acts as a mentor. An aunt might introduce her nephew to different books and expand his love for reading. She could also be there for him during difficult times, like when he has an argument with his friends at school. The aunt might share stories from her own childhood to make him feel better and give him advice on how to handle such situations.
One possible story could be that the son found out some secrets about his mom and aunt, like a financial misstep in the past. He then tries to blackmail them by threatening to tell the rest of the family. But this is a very unethical behavior.
It could be that mom has a story about when she was a child and she had a blister on her foot from wearing new shoes. But her mother (grandma) took care of it gently. And aunt may have a story about how she used to go hiking with friends and her feet led her to the most beautiful views. These stories show the significance of their feet in different life situations.
No, it is not appropriate. Sex education is a very sensitive and private matter, and it should be carried out by professional educators or parents in an appropriate and scientific way, following ethical and legal guidelines.