Aside from the occasional odd result you have to try for NSFW content. You can go through hoops to generate locally and have more freedom, but to generate a nude woman you have to use word salad. “Chest young woman bare” instead of “boobs” for example, which most hosts will block.
Its all based on context for words. Associations.
Gore is both easier and harder. Its less filtered, but the work arounds have more context so you get more random things you don’t want.
Its like why I am using “pudgy chonky obese” to make Fluffies out of horses.
The prompt ends up more of a chaotic mess. I saw it described as Dadaist poetry, and it kind of is.
To give an example, this prompt was used after applying a script enabling banned words to generate this porn piece of a generic anime princess which I am cropping the nudity out of (sorry, but its the easiest example of creating a piece).
“fantasitic CG unity wallpaper of
beautiful colette from ratatouille
full body shot, perfect symmetrical
face ruby eyes with elegant
eyelashes pale pink short hairstyle
glowing skin, bare naked, nude,
sexy pose, with frills cleavage nude
breasts, ((shaved vagina)), by
alphonse mucha and krenz cushart.
artgerm strong rim light flower
particles”
“Negative prompt: ugly, fat,
obesity, chubby, deformed,
deformity, ugliness, blurry,
disfigured, poorly drawn face,
mutation, mutated, extra limbs,
wrong hands, messy drawing, text,
cropped head”

Its just a jumble of words, which has gone through several generations of alterations based on changing keywords to the original pic.
It takes a lot of redos to get hands even close to right, the AI struggles heavily on that.