u can tell a a horny story online was written by a cishet dude if it describes a major female character like
She had waist-length flame red hair and luscious D cup breasts. She was 5'7" tall and had hip-waist-bust measurements of 40"-25"-40".
a fun thing about reading old erotica is that you quickly realize there is no erotica so old that people didn't know about:
- the clitoris
- the female orgasm
- oral sex (both ways)
- anal sex (also both ways)
- etc.
it's one of those "medieval people didn't wash themselves" stereotypes but I feel like a lot of people sort of implicitly believe sex was all furtive missionary quickies before approx. 1960, and oh no. no no no no no. they knew how to fuck. when it comes to sex, people don't just not try things. and you can see the horny writers treat all these acts as well-known concepts. people have known how to fuck for a real long time.
given how many cultures have stories about humanoid animals i also feel like people have probably been into furry stuff for forever