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.
No. I haven't heard of such a story being common in any mainstream culture. It seems rather an odd and not so typical narrative. Most cultures have stories about love, loyalty, and moral values, and this doesn't seem to fit into the general pattern of well - known cultural stories.
Perhaps it could be a lesson about not being easily influenced. If the wife in the story is easily seduced, it might teach that one should be strong - willed and resist temptations that can harm relationships. However, this is all speculation as it's not a known, established story with a set moral.
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.
As far as I know, it's not a widely known story in general literature or mainstream storytelling. It might be a very niche or local story that only a specific group of people are aware of.
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.