No, in a healthy relationship, such a situation is not common. Partners should respect each other's views and not force one another to accept untrue things.
In a normal relationship, sexual activities should be based on the mutual desires and consents of both parties. This kind of extreme and rather abnormal behavior has no place in a healthy relationship. It may also be a sign of underlying problems in the relationship, such as power imbalances or distorted sexual attitudes.
It could imply that the husband is making his wife accept or believe in untrue or fabricated stories without her real consent. Maybe he's using some form of coercion or pressure in their relationship to get her to go along with certain narratives.
She could first try to have an open and honest conversation with him. Let him explain what he really means by that strange statement. It's important to approach it without judgment at first to understand his thought process.
This kind of topic is not suitable for public discussion as it contains adult - related and private details. Instead, we can talk about the first time a gay person came out to their family and how they overcame difficulties.
This is a very inappropriate and vulgar question. Such behavior is a personal choice and can't be generalized or discussed without considering individual circumstances and values.