It's no secret that this blog doesn't mind talking about anal sex. Yes, anal sex gets a bad rap about being dangerous, increases the risk of HIV and AIDS.

But to some people it feels so damned good. If you've never done it, but you're curious, here are some rules from Sexuality.org that will make your experience sizzle.

Pay attention to rule number five:

5. Anal stimulation provides many kinds of pleasure

The highest concentration of nerve endings is around the anal opening itself. A finger can focus on them especailly effectively. When an object or penis is inserted beyond the anal opening into the rectum, other pleasures are involved. The outer protion of the rectum, like the vagina, has several nerve endings. The inner portion responds mostly to pressure.

Some people enjoy the feelings of pressure and fullness once they understand that these sensations do not presage an impending bowel movement. Rectal pressure is especially important to enthusiasts of "fisting," a form of anal sex in which several fingers or een the entire hand and forearm are inserted into the rectum and sometimes into the lower colon.

In men, the protate - which is just beyond the rectal wall, a few inches in, towards the front of the body - can be a source of pleasure when massaged by a finger, an object, or a penis. Also, the lower end of the penis, or "bulb," is near the anal opening opening. It is stimulated indirectly by most types of anal sex.

Anal pleasure can be psychological as well as physical. The anal taboo adds to the thrill of the forbidden. The most common anti-anal message (it's dirty!) sometimes returns as a source of raunchy, sleazy excitement. Rimming enthusiasts may enjoy the feeling that they are being disgustingly - and delightfully - perverse. Other people regard the anus as a secret, special place. Sharing it with a partner is an act of openness and giving.

Some women, possibly men too, can have an anal orgasm. According to one guy, when his woman had her first anal orgasm with him, it looked like a vanilla ice cream cone after it had been licked down.

"The first time I saw that, I looked down and said damn," he said.

Damn, indeed.