Well, in 'the suicide club erotic story', it's likely just a fictional creation. There's no evidence to suggest it's a real club. It's used to drive the narrative, often in a very dark and mysterious way. The idea of a'suicide club' in the story is probably more about exploring extreme human emotions and situations within the fictional world that the author has created.
A 'wife creampie contest story' is not a common or appropriate topic. If we assume it's a fictional and inappropriate scenario, it would involve inappropriate and unethical content which we should not promote or discuss in detail.
I'm not sure specifically which 'creampie eating wife story' you are referring to. There could be various fictional or made - up stories with such a title. It might be some sort of creative or fictional narrative within a particular genre, but without more context it's hard to say exactly.
No, it is not appropriate at all. Such stories involve vulgar and inappropriate sexual content which is not suitable for public discussion. It violates the norms of public decency and can make others uncomfortable.
No, it doesn't seem to be a common type of story. It's a rather unusual title and concept. Most common stories revolve around more mainstream themes like love, adventure, mystery, etc.