Hi, I'm into pretty full on sex and I love rimming. I've been fantasising about rimming a guy's arse till he opens up and lets me take his shit. I really want to try it out, but am worried that I'll catch some dreadful disease. To be honest, though, in all my years of rimming dirty arses, I haven't caught anything. Is scat dangerous from the point of view of catching anything, including HIV?