Quoting what Hannibal said to me:
Genitals, buttholes and nipples are considered porn, so censoring them counts as censored porn, which isn't allowed. Depictions of sex acts are also not allowed. Technically jizz isn't allowed either. Any of those things could get an image deleted and repeat offenses could get an account deleted. Since some of these things (not all from you) are posted in a public stream, if someone reported the image it could lead to problems. Even on a private stream it could come back to bite you. Just so you're aware, keeping content with those features up is a calculated risk.