No, it is not appropriate. Such stories involve very private and often inappropriate sexual content that should not be shared openly. It violates the privacy and respect within a relationship and is not suitable for public discussion.
One interpretation could be that she heard some interesting folklore or stories about black cocks (as in the bird) and wanted to share. Another might be that she misinterpreted something and didn't realize it could have an inappropriate undertone. Or perhaps she is using it in a very specific cultural context that the husband may or may not be aware of.
I'm not sure what specific 'first black cock story' you are referring to. It could be about the first black rooster on a farm. Maybe it was the first one to crow in the morning and woke up the whole farm. It became a sort of leader among the other chickens.
I'm not sure specifically which 'black cock wife story' you are referring to. There could be many fictional or cultural stories with this name. Without more context, it's difficult to say what it's about.
I'm not sure what specific 'her first monster cock stories' you are referring to. It could be a very unique or personal set of stories that need more context to be accurately described.
Since I don't have a definite knowledge of this particular 'black cock white wife story', it might be a story from a very specific regional folklore, or perhaps it's a title created by an individual for a personal narrative. Maybe it has something to do with the relationship between two characters of different races or appearances, but again, this is just speculation without more details.
I'm not sure which specific 'black cock seduces wife story' you are referring to. There could be various fictional or made - up stories with such a title, but without more context, it's difficult to say what it's about.