It makes me very sad to see a gay guy (who admits he doesn't know what he's talking about) getting upvoted in this forum for promoting the age-old blood libel against male homosexual intercourse: that men degrade themselves and cause pain and suffering to others for a poor substitute for a vagina, and they both get covered in poo. Please understand that I'm telling you this for your own good: get fucked!

I kinda know how you feel, because I started out the same way. When I started having sex with men I had zero interest in anal sex, could not see why anyone would do it, and expected to go my whole gay life without even trying it. Then a man I trusted talked me into it, for my own good.

Anal receptive intercourse is the greatest physical pleasure a man can experience. You can't even conceptualize what it's like. Not only that, it is the ultimate validation of the male homosexual reality: it becomes undeniable that the male human body evolved the capacity for mind-blowing sexual relationships with other males. Male homosexuality is not an accident; sex between men was beneficial for the survival and advancement of our species. You will never be able to understand this fundamental truth without experiencing it for yourself.

Does it hurt? You might get hurt riding a bicycle for the first time. But very quickly your mind and body come together and now you know how to do it. [Protip: you have two sphincters, one which you will learn to consciously control, and another that is involuntary but reacts to your state of relaxation. If you think it's going to hurt, it will. If you're relaxed, it won't.]

As for preparation, I don't know where this obsession came from. Barring a medical condition, if you eat relatively healthy, exercise regularly and don't take a shit right before you want to have sex, you'll be DTF. The place where anal sex takes place is a conduit; the poo is stored further up the large intestine behind another sphincter. Yes, sometimes there is a little residue left behind. Once in a while somebody might get a speck of shit on his dick. Keep a towel nearby and don't make a big deal out of it. Be a man. I literally never heard of anybody fasting or being fussy about diet or spending hours douching until like five years ago, except as a joke.

So find someone you trust and have him show you a whole new world. It will change your life.