No. Such topics are inappropriate for public discussion as they involve private and often sexually explicit content that violates public decency standards.
Definitely not. Such content is inappropriate in almost all social and cultural contexts. It goes against the values of decency and respect for others, and can also be considered offensive and unethical.
I'm not sure specifically what that particular 'giant black dildo story' is about as the title is rather unclear without more context. It could potentially be a fictional or perhaps a very strange and specific anecdote within a certain community or narrative.
The significance of 'the giant black dildo story' is very much in question. If it is a story that was created to make a statement about sexuality, power, or some other complex concept, then it could have significance within the framework of those discussions. But if it's just a silly or shock - value story, then it may have no significance at all, other than being a strange and somewhat off - putting title.
Some appropriate topics could be 'How to build trust in a relationship'. Trust is fundamental in any relationship. It involves being honest with each other, keeping promises, and being reliable.
No, it is not appropriate. Such content is private and often involves adult and inappropriate themes. Sharing it in public violates social norms and can make others uncomfortable.