Analingus, Rimming, Tossing A Salad, Talking to President Bush...
The act has many names but it comes down to stimulating the anus with the tongue. For a variety of obvious reasons not every person engages or even wishes to. Even for the more intrepid and courageous sextronaut it may take a bit of convincing before you "dive" in.
1. Clean up
Cleanliness is even more of a issue with analingus than with traditional most any other form of sex play. Taking a sexy bath or shower together is a relaxing form of foreplay and will allow you and your partner to get squeaky clean. You or your partner should soap their butt and asshole, inserting a finger into the rectum, and rinse thoroughly with warm water. An enema usually isn't necessary if you wash well.
2. Ease in
Let you partner relax and get comfortable with you exploring their posterior before you bury your tongue in their ass. Massage their back and buttocks, kiss and caress their thighs and ass cheeks. Spread their cheeks and blow warm breaths over their hole. Lick, suck, and nibble their butt, perineum (the area of skin between the asshole and genitals), and the skin around their pucker. Get everything warm, wet, and lubricated with saliva. Assholes usually contract when stimulated, and then expand. Lick gently or tap the tip of your tongue against their asshole, and wait for a response. After a bit of gentle probing, the sphincter muscles should start to relax and welcome deeper exploration. TAKE IT SLOW! This is not a race!
3. Work your tongue The anal region is very rich in sensitive nerve endings just begging for your tongue's attention. Keep your mouth moist and supple as you work their hole over. A tall glass of tea can help, keep your tongue loose and paint wide circle around their pucker. Make it tight, long and pointed to probe and penetrate. Work it in and out, around and around, till your partner begs for more.
4. Use your hands
In some ass-eating positions, your hands may be full keeping your partner's butt cheeks spread to allow you better access to their hole. But it's worthwhile to convince them to either sit on your face or reach back and clamp their ass open wide themselves. That way you can put your own paws to work massaging your partner's clit, or stroking off his cock, or tweaking his or her nipples.
5. Pig out
Real Talk Time: you have your face in your partner's butt, it's too late to act shy. Worship your partner's ass. Get lost in it, make love to it. Eating out someone's ass is one of the most intimate of all sexual acts. If both partners approach it with openness and enthusiasm, they will be rewarded with unparalleled enjoyment, whether eating ass is a main course, a spicy side dish, or appetizer for anal sex.