Genericize the porn mag? That’s doable, sure.
(updated-KA101)
Current sexual content: Playboy (->pornographic magazine), erotic novel, bondage suit/mask
Current content that gets presumed as sexual: vibrator (at no point do we say that you’re using it sexually, that’s your decision. We know it can be thusly used, and that’s OK), maid clothing (you actually are a maid in that profession, not some performer)
(Thanks for the reminder, Pthalocy.)
Current content that is better for morale than the vibrator, off top/head: possibly s’mores, just about any Marloss consumable once you’ve got its mutation*, going Mycus
Folks have wanted reproductive sexual content from time to time. I’ve opined that about the only way I’d see that happening involves post-threshold mutations and parthenogenic egg-laying; human reproduction, in addition to the ick potential Pthalocy and AlisonW raise, is inefficient to implement in gameplay terms as well: it takes rather a long time to be worth simulating on the DDA time scale (three seasons of gestation, birth–never a particularly safe event in human experience, and midwifery/medical care is gonna be a bit tougher to come by–and then a decade or two of game time, if you count infancy and childhood. Which we would).
One point that can be missed: currently DDA asks for binary gender-assignment at chargen, passes out gear based on your pick, and if you use tiles gives you a sprite to match–but afterward, your choice is just a line on the char sheet and different terms in languages that insist on gender-marking the memorial log. There is no game mechanic that plays differently based on your choice of gender or sex.
Likewise, zeds’ clothing need not reflect their gender/sex, but in case anyone’s interested, undergarment choice is a straight 50/50, rolled when you first kill the zed.
We like it that way; I’m not averse to adding an “Other” personally but wouldn’t have a lot of time to devote to that ATM. Adding stuff that would make gender/sex (currently we don’t really check that distinction in-game) matter is therefore a lower priority.