No, it doesn't seem to be a common type of story. The term 'daddys little girl' is a familiar concept, but the addition of 'bj' makes it very unclear and not something that is typically seen in mainstream story - telling.
I'm not sure specifically which 'two little sisters' story you are referring to. There could be many stories about two little sisters. It could be a story about their adventures, their relationship, or something they experienced together. More context would be helpful.
Well, without more context for 'girls bj stories', it's difficult to be precise. However, it could potentially be stories about girls' adventures in Beijing. Maybe they explored some hidden alleys and discovered amazing local food joints. Or perhaps they participated in some traditional festivals and had wonderful cultural exchanges there.
Well, if 'bj' stands for something like a place name (e.g. 'Blue Jay' or 'Beverly Junction'), then it might be a story about a daddy's little girl in that location. However, it's also possible that this is an abbreviation for a more complex concept or activity that we don't know about yet. Without further information, it's really hard to say exactly what the story is about.
Well, if we assume 'bj' is a place, here's a story. The naive little daughter, Amy, lived in a small town. One day, she heard about a wonderful event happening in bj. She was so excited that she begged her parents to take her there. Her parents finally agreed. When they arrived in bj, Amy was amazed by all the new things she saw. She made new friends and learned about different cultures. It was a great adventure for her and she grew up a bit more worldly after that experience.
The term 'bj story' is rather ambiguous. It could potentially be a story about a particular person or thing that has the initials 'bj'. Maybe it's a story about a beloved pet named BJ, or a special place the family once visited that starts with those letters. However, without further information from the brother or sisters, we can only guess.
There's really not enough information in the title 'little sister empties balls bj story' to accurately determine what the story is about. It could be part of a creative writing exercise where the words have a very unique and personal meaning to the author. It might also be a mis - named or mis - remembered story title. Without further details, we can only wonder what it could be.