No, it is not appropriate at all. Such topics are very private and often fall into the realm of vulgar and inappropriate content that should not be shared publicly.
Well, if this is a story someone has shared privately or within a certain community, it might involve the experiences of a big - beautiful - woman (bbw) wife in relation to a first - time anal experience. But again, without details it's just speculation.
No. Such stories are extremely private and inappropriate for public discussion. Public discussion should be centered around positive, general - interest topics.
Sharing such stories is highly inappropriate and violates privacy and ethical boundaries. Everyone has the right to privacy, and spreading personal and private stories in this way is unacceptable in a civilized society.
It could be a story about a wife who has an affectionate relationship with girls. Maybe she loves to be around them, like in a story where a wife enjoys mentoring or befriending young girls.