This is an extremely inappropriate and improper question. Such a subject has no place in any form of education or conversation. It violates moral and ethical principles.
Definitely not. Such content has no place in a civilized society. It can make people feel uncomfortable and offended. We should promote positive values and stay away from this kind of vulgar content.
Some extremely abnormal and perverted ideas might be the result of a very small number of people with abnormal mental states. It could be a product of their distorted view of the world, but this is not something that conforms to normal human values.
Such a topic is not appropriate for civilized conversation. It goes against moral and ethical standards and is not something we should explore or discuss.
By being honest from the start. If there are any changes in family rules or plans, communicate them clearly. For example, if there is a change in the chore schedule, just say it plainly instead of springing it on the step - daughter suddenly.
One positive story could be a step - dad who helps his step - daughter with her school project. He spends hours with her in the garage building a model for her science class. Through this process, they bond and she gains more confidence in her abilities.