npc’s do spawn with them. It tells you what they’re wearing including their piercing low in their info page. But as far as I’m aware theirs no way to talk them into getting one if they don’t have one. Much like real life. Their body their choice lol.
To be fair. I check the Description and name of every single npc I see. So I would find it quickly. And my character is a playboy who sleeps with pretty much everyone. Which helps because this game maker seems to take into considerations what they are wearing, and what state of undress you have seen them in. Cuz I didn’t find out the first Guy I slept with was transgendered until we actually “Got Busy” and I found out he wasn’t fully transitioned yet. He still had…. A Rose. rather than a Baton. I know this is an adult game but I still don’t wanna be to explicit lol. My point is unless they’re wearing something where you can see their naval. Or you have got them naked. The description might not include the piercing yet.