'warm your partner up' with foreplay before vaginal sex; you should do the same with anal sex and build up to the main event. Try inserting a well-lubed fingertip or narrow sex toy into your partner, allowing the muscles to gradually relax and dilate before taking things up a notch and penetrating her with your penis. Remember, you're not trying to stretch the anal opening, but allow it to expand slowly, to accommodate more girth. Don't force it Never hurry or force anal sex. Strictly speaking, the anus was not designed for penetration, so things may be a little uncomfortable for your partner at first. Let her call the shots on how hard, how deep and how fast your movements should be; and if she says stop, not matter how good it may feel, you need to stop immediately. If you want anal sex more than once then you are going to need to take it slowly at first. Don't penetrate elsewhere afterward In porn movies the girls love a bit of ATM action. But do not try this move on your real life girlfriend. It's gross and will totally obliterate your chances of ever having anal sex with her again -- if it doesn't end your relationship first. In fact, you shouldn't penetrate another part of her body (i.e. mouth or vagina) directly after anal insertion. The butt contains bacteria that can cause infection or irritation if transferred to another part of the body; so be sure to wash