my wife and her bull stories

I'm not sure exactly what these stories are about without more context. It could be that your wife has some tall tales or fictional stories that she likes to tell, perhaps about a time she saw a bull or something related to a bull in a more metaphorical sense.

I don't know the specific stories, so I can't give exact examples. But if it's about real bulls, it could be like the time she saw a bull break out of its pen at a rodeo. Or if it's more of a figurative 'bull', she might tell a story about how she dealt with a 'bullish' (aggressive or overbearing) person at work as if it were a battle with a real bull.

Perhaps it's a very specific kind of story. For example, in some cultural tales, a black bull might be a symbol of strength or fertility, and she adores those kinds of symbolic stories. It could also be that she has a personal connection to a place or event where a black bull was involved, and stories about it bring back good memories.

One example could be a traditional folk tale where the black bull is a magical creature that helps a poor farmer. It uses its strength to plow the fields in record time and brings prosperity to the farmer's family.

Since the stories are not known in detail, it's difficult to determine the moral lessons. However, if we consider common themes in stories, it could potentially be about kindness and mutual respect. If the black wife and white bull interact in the story, perhaps it shows that different beings can get along and support each other in a positive way, which would be a moral lesson of harmony.

In some cases, the 'wife meets her bull story' might be a cultural or regional tale with significance related to local values. It could be used to teach lessons about courage, adaptability, or the relationship between humans and animals. If the story has religious or mythological undertones, the bull might be a sacred or symbolic creature, and the wife's meeting with it could have spiritual implications.

It might also be that the stories are fictional works where the black bull has certain characteristics like being brave or gentle that the wife finds appealing. These stories could be in the form of novels, short stories or even local legends that she has a particular fondness for.

I'm not aware of any extremely famous 'wife bull stories' in a very specific sense. However, in some cultures, there are tales where a wife's relationship with livestock, like a bull, might be symbolic. For example, in some farming communities, a wife taking care of the family's bull could be seen as a sign of her responsibility and hard work in maintaining the family's agricultural assets. But these are more traditional and cultural stories rather than widely known in a global 'famous' sense.

One possible theme could be about contrast. The black wife and white bull are different in appearance, and this contrast might be used to explore differences in general.

You could try to have an open and honest conversation with her. Explain how these 'bull stories' might not be based on truth or reality. Maybe share some reliable information sources with her to help her see the difference.