No, it is not at all appropriate. We should uphold good moral values in our communication and avoid promoting or spreading any form of vulgar or improper content. Society has standards of decency, and this clearly goes against them.
I'm not sure specifically which 'rock hard cock story' you are referring to. There could be many fictional or personal accounts that might use such a phrase. It could potentially be a story about a very determined or unyielding character, but without more context, it's hard to say.
In a positive family - centric story, 'daddys big cock' could symbolize strength. For example, if we consider a daddy duck, his big wings (which could be seen as his 'big cock' in a symbolic way) are strong enough to protect his ducklings from predators while they swim in the pond. He uses his strength to lead the family to safe places for food and shelter.
We can prevent it by setting clear moral and ethical guidelines in our communities and families. Educating people about what is appropriate and inappropriate is key.
Once upon a time, there was a brave knight. He was known for his 'rock hard cock' - like courage. No matter how difficult the battle, he never flinched. One day, he faced a fearsome dragon. But his unwavering determination, similar to the idea of a 'rock hard cock', made him stand firm and eventually defeat the dragon.
Definitely not. Such a topic involves inappropriate and vulgar elements that are not acceptable in a civil and general conversation. There are many other interesting and positive topics to talk about, like art, culture, and science.