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.
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.
As I don't really know the story, I can't say much about the characters. But usually in a story about two little sisters, one sister might be more outgoing and the other more shy. They could have different personalities which would lead to different actions and reactions in the story.
Since we don't know much about the 'bj story', it's hard to say much about the brother. He could be an older brother who likes to share family stories or perhaps it's something he made up himself to entertain his sisters.
Well, this is a rather inappropriate topic, so I can't provide relevant stories. We should focus on positive, healthy and family - friendly topics like first - time travel experiences, first - time achieving a personal goal, etc.
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.