Originally Posted by oggbashan
The basic rules are:
No sex before age 18. This is essential. No flashbacks, nothing except perhaps a bare undetailed statement e.g. 'x had lost her virginity years ago'.
No bestiality (unless the beasts are mythical)
No snuff - killing people for sexual gratification
Also, Laurel (site owner and sole story approver) doesn't much like traumatic mayhem.
The CELEBRITY category has rules about who can be depicted fucking but I'm not familiar since I won't write there.
The NO-UNDER-18 rule is the most questioned.
Nobody appearing to be a human under 18 can be in a sexual situation in a LIT story. A 5000-year-old alien looking like a 14-year-old human? No go. Fantasy werewolves, sure. A were-critter transformed into what looks like a 14-year-old human? No go.
But that's about appearance. Some stories approved here take an approach like Tom Hanks' BIG, with a young mind awakening in a mature body, by magic or aroused from coma or whatever. I'm uncomfortable exploiting that loophole.
Underage sex can be reported ("She was a mother at 15") but not described ("His 14-year-old 14-inch horsecock painfully insinuated into her younger depths and beyond"). "Sexual situation" includes thinking about sex, either by the underage subject, or by someone fantasizing about jailbait ("I imagined her just-starting pubic hair").
My advice: Read all the stickys atop the Author's Hangout forum. You'll find most answers there.