Well, if'my first monster cock story' is a made - up or very specific story within a certain group or by an individual, I haven't heard of it. Maybe it's about an encounter with something large and strange in a fictional adventure? But again, this is just speculation without further details.
Educate yourself about appropriate language use. Read good literature, follow positive language models in society. Avoid being influenced by vulgar media or bad company. When in doubt, choose a more neutral and respectful term.
There was a little rooster that got into the doctor's office by accident. It started to strut around, pecking at the floor. It hopped onto the examination table and flapped its wings, making a bit of a mess. The nurses and doctor were quite amused at first, but then they had to gently shoo it out so they could get back to seeing patients.
It could also be that the story has a moral related to family values. Your aunt is using the story of the rooster (cock) to illustrate how family members take care of each other or something they all share in common, just like sharing food with the rooster in the story.
Definitely not. Sharing something like that with a sister is highly unethical. Family relationships are based on respect, love, and appropriate boundaries. This kind of sharing violates those boundaries and can cause discomfort, harm to the relationship, and is not acceptable in a civilized family environment.
It could include how you first saw the rooster. For example, you might say 'I first saw the cock in a small farmyard. It was standing on a fence post, looking so majestic.'
There was a family of squirrels living in a big oak tree. The youngest squirrel, named Nutty, was always full of energy. One bedtime, Nutty was so excited that he couldn't sleep. His mother told him a story about the Great Oak Tree Spirit. She said that the spirit watched over all the animals in the forest. Nutty closed his eyes and imagined the spirit. In his dream, the spirit took him on a flight over the forest. He saw all the other animals' homes and how they lived. Nutty learned that every animal had its own important role in the forest. When he woke up the next morning, he was ready to be a good little squirrel and help out in the forest.
Such a question is highly improper and not within the realm of decent conversation. It is important to maintain respectful and appropriate language in all interactions.