No, it is completely unethical. Such behavior violates the boundaries of a healthy relationship and basic moral standards. A relationship should be based on respect, trust, and loyalty, and this kind of situation goes against all of those.
The consequences could be extremely severe for the relationship. Trust would be completely shattered. The person who witnessed it would likely feel a great deal of anger, betrayal, and confusion. It could lead to the end of the relationship.
The story might be about a situation where the wife was fingered, as in singled out, perhaps because of a misunderstanding. For example, she could have been wearing something that made her stand out and was misinterpreted by others in the bar. This could start a chain of events that affects her and her relationship, like her husband getting jealous or people gossiping about her.
First, she needs to find out exactly what the accusation or situation is. If it's a false accusation, she can try to find witnesses who can support her side of the story.
No, it is completely inappropriate and immoral. Such behavior involves non - consensual and inappropriate actions that violate the privacy and dignity of others.
The 'wife fingered story' could be many things. It might be a story where the wife uses her fingers in an artistic way, like painting or knitting and the story revolves around her creative process. Or it could be about a situation where her fingers are involved in a discovery, for example, she finds something small by using her fingers. However, without additional details, we can only speculate on what this story might be about.
I highly doubt that it is a common story. The title sounds rather unusual and not something that is typically part of mainstream storytelling. It could be a very local or personal narrative.
Since there's not much to go on with just 'wife fingered in restaurant story', it might be a made - up or very specific local story. Maybe it's about a wife who was pointed at (fingered) in a restaurant for some reason, like she did something remarkable or something wrong. However, this is all just speculation without further details.