Rimming, or analingus, involves licking, kissing, sucking, or penetrating someone's butt with your tongue. And it can be a lot of fun if that's what you're into. Like any kind of sexual exploration, communication, consent and trust are key. But if you're thinking about going down there, here's everything you need to know beforehand. These 8 women explain what they like, or don't like, about rimming, and how it feels for them.