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.
If this is a non - inappropriate story, perhaps the 'trick' could be a misunderstanding. For example, the little sister might be tricked into believing she's going to a fun party but ends up at a boring family gathering. It could be about how she overcomes the disappointment and finds something positive in the situation.
No, it might not be appropriate for all ages. If the description of the tickling gets too intense or is written in a way that could be misconstrued as something inappropriate, then it's not suitable for younger audiences. For example, if there are overly suggestive remarks or actions during the tickling scenes.
One possible plot could be that the big brother is trying to cheer up his little sister who is feeling sad. So, he starts tickling her in a playful way. This leads to a lot of laughter and bonding between them.
She could forgive the person who tricked her and they become closer friends. For example, if it was a sibling who tricked her out of a bit of mischief, she realizes it was all in good fun and they share a laugh about it in the end.
Well, let's break it down. If 'little sister' is the main character, and 'empties balls' could mean she is taking balls out of something, like a box or a bag. But 'bj' is really throwing me off. Maybe it's the initials of a place or another character. So a possible plot could be that the little sister is helping to set up a ball - related event. She empties the balls from storage and then has to wait for someone named BJ to arrive to start the activity. But again, this is all speculation given the very odd and unclear title.
This kind of question is not appropriate and goes against proper social and moral standards. We should avoid dealing with such vulgar and improper subjects.
I'm not sure what specific 'BJ' means in this context. If 'BJ' stands for Beijing, here is a story. There were two sisters in Beijing. The older sister was very kind and hard - working. She worked part - time while studying to support her younger sister's education. They often shared their dreams and supported each other through difficulties in the big city.