plausible human sexual behavior

[Lifestyle66]

I always think Dialogue. Ill read a story where a college girl is like

"You are eighteen now and surely are interested in women's breasts"

And it's like no one talks like that. Even with the Wildness in the world there is sill a nuanced language of subltly when it comes to things like sex. So you can have an 8-person orgy but it still needs to feel like it could have realistically come about.

It takes the right amount of character building to make the girl's attitudes and interests come out.

I've read some stories which are written with such simplistic monologues or thoughts. They're usually between 1,500-2,000 words long. When I find one, I'll rate them a 2 and leave a comment; "the whole story sounds like an author's set of notes, needing fleshing out to make it a real story."

But even when you put the effort into building the characters, there are some readers who "skim" the stories and leave shitty comments, because they fail to pick up those building block explaining WHY someone acts the way they do.

As the saying goes: "You can't fix stupid."

 

[SimonDoom]

If the OP is asking whether there are certain kinds of sexual experiences or behaviors that are just too outlandish to be the basis for an erotic story, I would say No. In that regard, I think there are no limits. If you want to write a story about a guy with a sexual fetish for women's ear wax, do it. You probably won't have a large appreciative audience, but that doesn't mean you can't write an effective story.

 

[AG31]

I'm fine with real world implausibility, fantasy and sci-fi, but I'm pretty sensitive to whether or not a human body can do the things described. If I can't figure out how you can get this part in that part while simultaneously caressing in this way, that takes me right out of the story.

 

[big_cane_sugar]

I'm fine with real world implausibility, fantasy and sci-fi, but I'm pretty sensitive to whether or not a human body can do the things described. If I can't figure out how you can get this part in that part while simultaneously caressing in this way, that takes me right out of the story.

When two or more contortionists are getting it on, who are we to question their choices?

 

[TheDok]

I think most readers are capable of accepting stories that probably wouldn't happen in real life, are a bit far-fetched or which have fantasy themes like time travel, body swaps, alternate realities etc.

From my experience what takes readers out of a story (or movie or TV show) really fast is unrealistic reactions and behaviour of characters. As an example, say there was a Geek Pride contest story about a nerdy first year college guy in the present day who creates a time machine and travels back in time to 1960 where he meets his grandmother's super-hot sister (his great-aunt) at age 18, one thing leads to another and they end up becoming erotic lovers. Time travel (from what we know) is impossible, incest a bit far-fetched and the hot girl falling for the nerd could be a bit of a cliche, but if written well enough the readers will accept these.

However if there was a scene where they are having sex in the girl's bedroom and her parents (obviously his great-grandparents) come home unexpectedly and walk in on them, are completely swell with the whole situation, tell them to have fun but be sure to use a condom then close the door and leave them to get on with it, this reaction by the parents to their 18-year-old daughter 'entertaining' an unknown young man in her bedroom is completely unrealistic especially in this era, and will lose readers at that point.

Rather than unrealistic reactions on the part of a protagonist, what really spoils any story for me is incongruous behaviour when an individual who has previously been portrayed as kind becomes very unkind or an intelligent individual becomes stupid. This often happens in tv serials to shoehorn a plot, but it jars and in my opinion is very lazy and unimaginative, and I try very hard not to do this when I write series.