Lots of women who've been there and done that say it's a welcome addition to their sexual repertoire. But just like you must walk before you can run, you must have some sort of anal foreplay before you go for the full monty of anal sex. Or, you know, you can do butt play and leave it at that forever, because it's your booty and you make the rules. You hopefully already know the basics: ALWAYS use lube, never put something that was in your butt in your mouth or vagina, and butt plugs are your friend.