I thought this was an obvious thing, but–
Look, don’t link people you don’t know well NSFW things. Don’t joke about doing sexual things to their character. Don’t joke about noncon, don’t plaster them with your yaoi tropes, don’t tell me rape is cute and funny.
I cannot fucking believe I need to ask this again. Yeah I write smut, yeah I write a sexual character, yeah I can joke about him having five cocks in his mouth in a row but guess what!! You don’t!! Get to do that!! Unless we have been comfortably talking and friends for a while!!!! Unless you know it’s okay on both ends!!!!!!!
You especially don’t get to do that in public!!!!!!!!!!!