If you hear such stories, you should distance yourself from the source. You can also let the person know that this is not something that should be talked about as it is disrespectful and unethical.
One should firmly refuse to listen further and ask the person spreading it to stop. It's not something that should be entertained.
First, you should not believe it easily. It could be a baseless rumor. But if there are signs that it might be true, you should report it to the relevant authorities. This is because drug use is illegal and endangers lives.
It is highly inappropriate. These types of stories are not only disrespectful to the individuals involved but also go against the principles of good taste and moral behavior. In a civilized society, we should focus on positive, respectful, and ethical topics.
Ignore it. Don't participate in spreading such inappropriate information.
They should stay calm and not overreact in a way that might make the situation worse. Then, they need to assess whether the person in the story is in immediate danger. If so, call for help right away.
I would react with disgust and disbelief. I would try to stop the person from sharing such a story because it is not only inappropriate but also harmful. I might also suggest that if there is a real problem in the relationship described, it should be dealt with privately and through proper channels, not by spreading such sordid tales.
First, you should realize that this is not a normal or acceptable situation. You can talk to the person sharing the story, if appropriate, and explain why this is wrong. Encourage them to focus on positive family interactions that are based on respect and healthy boundaries, like going on a picnic or playing family games together instead of this inappropriate scenario.
Just ignore them. These stories are often not based on facts and are just for creating a false image. Focus on the real aspects of Berghain like its music and art scene.
If it was accidental, they should immediately distance themselves and try to forget about it. Pretend it never happened and respect the privacy.
First of all, don't believe it immediately. Then, if it seems to be part of a malicious rumor - spreading campaign, you could report it to the relevant authorities if it's getting out of hand. We should not allow this kind of slanderous and unethical behavior to continue unchecked. Also, encourage others around you to have a more positive and respectful attitude towards others' privacy.