As far as Stable Diffusion goes - when the released SD 2.1/XL/Stable Cascade, you couldn't even make a (woman's) nipple.
I don't use them for porn like a lot of people seem too, but it seems weird to me that something that's kind of made to generate art can't generate one of the most common subjects in all of art history - nude humans.
For some reason its training thinks they are decorative, I guess it’s a pretty funny elucidation of how it works.
I have seen a lot of “pasties” that look like Sorry! game pieces, coat buttons, and especially hell-forged cybernetic plumbuses. Did they train it at an alien strip club?
The LoRAs and VAEs work (see civit.ai), but do you really want something named NSFWonly in your pipeline just for nipples? Haha
I have in fact gotten a nude out of Stable Cascade. And that's just with text prompting, the proper way to use these is with multimodal prompting. I'm sure it can do it with an example image.
I seem to have the opposite problem a lot of the time. I tried using Meta's image gen tool, and had such a time trying to get it to make art that was not "kind of" sexual. It felt like Facebook's entire learning chain must have been built on people's sexy images of their girlfriend that's all now hidden in the art.
These were examples that were not super blatant, like a tree landscape that just happens to have a human figure and cave in their crotch. Examples:
Not meant in a rude way, but please consider that your brain is making these up and you might need to see a therapist. I can see absolutely nothing "kind of sexual" in those two pictures.
Not taken as rude. If its not an issue, then that's actually a positive for you. It means less time taken reloading trying to get it to not look like a human that happens to be made out of mountains.
I don't use them for porn like a lot of people seem too, but it seems weird to me that something that's kind of made to generate art can't generate one of the most common subjects in all of art history - nude humans.