Okay me and my boyfriend are super down for a lot of kinky things during sex. But one thing we haven’t done is anal. He wants to do it and I honestly do to but I’m obviously scared shitless. Like what happens if shit actually comes out?? Can I prevent that? Like clean it out before hand or idkkk?? And like what strategies should I use before hand ? Like stretch it a little with a finger orrrr? HELP