No, it is not appropriate. Such topics involve vulgar and inappropriate sexual content which goes against moral and ethical standards in most contexts.
Yes, there are ethical concerns. These types of stories often involve very private and personal sexual experiences. Sharing such stories without proper consent can be a violation of privacy. Moreover, in many cultures, public discussion of sexual matters in this way is considered inappropriate and goes against moral and ethical norms.
Male masturbation stories can be used in sex education to illustrate normal sexual development. For example, sharing stories about how men discover masturbation during puberty can help students understand that it is a normal part of growing up.
I don't have personal stories about vibrators. However, some people might share positive experiences about how a vibrator has helped them in a healthy sexual exploration within the boundaries of consensual and private use. But this is a very personal and private topic that not everyone is comfortable discussing openly.
Authors should self - censor. They need to be aware of what is appropriate and inappropriate. Stick to positive themes like friendship, adventure, or personal growth.
Sharing such explicit sex stories is not appropriate. These are private and often involve vulgar and inappropriate content that goes against social ethics and good taste.
Sharing such stories is highly inappropriate as it involves private and often adult - themed content that is not suitable for public discussion. It violates privacy and can be considered vulgar.
I'm not sure exactly what you mean by 'group pissing femdom' in a non - adult context. However, if we consider 'femdom' as female dominance in general situations, stories could involve women taking charge in various group settings like in a business project where female leaders lead a group to success.