It's hard to give a definite answer. Size isn't the only factor that determines satisfaction. Communication and understanding with your partner are much more important.
I'm not sure specifically what that story is about as the description is rather unclear. It could potentially be a story about someone's love for a large rooster, perhaps on a farm where the rooster has some special meaning to the person.
Well, this is a rather inappropriate and unethical situation. But if we were to find a moral, it could be about respecting others' boundaries and not engaging in vulgar or inappropriate behavior. It shows that such actions are unacceptable in a civilized society.
To turn this into a positive story, we could change the whole concept. Instead of the vulgar act, we could have a story where the person who might have considered that inappropriate act realizes their wrong and decides to be a positive influence. He could help the girl get into a rehab program, offer her friendship, and encourage her to turn her life around. By changing the actions from negative to positive, we can create a story of redemption and hope.
It is not okay at all. Our bodies are private, and this kind of showing off not only makes others uncomfortable but also reflects a lack of proper self - awareness and respect for others. We should uphold good moral and ethical standards in our interactions.
If this was some sort of misunderstanding, for example, if it was just a misinterpretation of a gesture that seemed like 'flashing' but wasn't, then more context would be needed to tell a proper story. But as it stands, it's not a positive or acceptable situation to base a story on.