This is something the chans do well. But I think we could do it on Lemmy.
Some of the subs I found that might be a fit are /c/Porn, since it is hardcore. But /s/Porn is all clips so maybe it doesn't fit perfectly.
/s/BeautyShots is oriented with photography. It's all softcore, but there are no rules against a hardcore image. I think it's a strong candidate.
But I can't do better than just asking. Someone knows a good place. Heck, maybe here is the right place. The rules say no embedded media in the post, but I guess the comments is cool. The thread would be asking people to contribute to the theme. Or maybe this can only be done by creating a new sub?
What's your take?