We should focus on positive, family - friendly and ethical topics, not on inappropriate sexual content.
Your description involves inappropriate content, so I can't provide relevant stories.
Let's change the topic to something more positive and healthy, like stories about big brother's kindness or helpfulness.
There are many other great topics like adventure stories or friendship tales that we can talk about instead.
Once upon a time, there was a big brother named Tom. He was very protective of his little sister, Lily. One day, Lily got lost in the forest while they were playing. Tom didn't panic. He used all his knowledge of the forest to search for her. He followed the small footprints she left and finally found her near a small stream. Lily was scared but seeing Tom made her feel safe immediately.
Once upon a time, there was a big brother named Tom and a big sister named Lily. One day, they found a lost puppy in the park. They decided to take it home and take care of it. They fed it, bathed it, and made a little bed for it. Eventually, they found the puppy's owner through some posters they put up. The owner was very grateful, and Tom and Lily were happy that they could help.
Once upon a time, there was a little sister named Lily and a big brother named Tom. One day, Lily lost her favorite doll. Tom saw how sad she was, so he searched everywhere in the house. Finally, he found the doll under the couch. Lily was so happy and gave Tom a big hug.
There was a big sister and her younger brother. The sister was known for her kindness. The brother was interested in painting. One day, the brother lost his favorite paint set. The big sister searched everywhere for it. Eventually, she found it in the attic. The brother was overjoyed and they spent the whole day painting together, creating beautiful memories as a brother - sister duo.
Big brother was so exhausted from all the work he had done. He went to his bedroom, put on his pajamas, and got into bed. As he closed his eyes, he started to dream about a beautiful beach, and soon he was sleeping soundly.
Well, without more context, it's difficult to tell a definite 'big cock brother story'. However, we could imagine that 'big cock brother' is a nickname for a character. For example, in a small village, there is a boy known as 'big cock brother' because he is very brave like a big rooster. He once protected the village's chickens from a fox and became a hero in the village.
Since I don't know the exact 'Big Brother Alice' story, let's consider some general elements that could be in it. Maybe Big Brother is older and wiser, and he imparts valuable lessons to Alice. It could be set in a magical land, or a normal neighborhood. The story might revolve around their relationship, with challenges they overcome together, or secrets they share. But again, this is all just guesswork as the actual story remains a mystery.
Rather than focusing on inappropriate topics, we could have a story where a brother is really brave. One day, his sister was being bullied at school. The brother, without hesitation, stood up to the bullies and protected his sister. It shows the strong bond between siblings.
I'm not sure which specific 'big little brother story' you are referring to. There could be many stories with such a title. It could be about the relationship between an older and a younger brother, like the older one protecting the little one.