I have only just found this site and am enjoying reading the forums but I'm surprised that so far no-one has started one looking at how pain and pleasure are inseparable in a lot of man on man situations. I believe that pain is an integral factor in making gay sex great. A lot of men are quite happy to experience pain in the pursuit of athletic prowess so why should it not be the same when it comes to other bodily achievements.
A simple example is my desire, and I am sure I am not alone, to be fucked by as big a cock as possible. When I say big I mean a big girth rather than length although the two seem to go together. A big girth even to an experienced bottom like me can mean my anus being stretched just that little bit more than usual. This produces a pain that is instantly turned into a pleasure that I savour and enhances the total fucking experience.
Another form of pain is being spanked before being fucked. I like being caned or paddled. The former produces a sharp pain that really raises the senses and makes me feel subjugated. The pain takes a long time to abate and more strokes add to its intensity and my feeling of being dominated. When I am finally fucked I am given a reminder of how tender my buttocks have become with every stroke of the cock in my hole, The pleasure of feeling a cock pump my hole and the pain each time a body pushes against my bruised ass-cheeks sends rapturous sensations through me.
Paddling produces a mellow kind of sting that is only momentary and quickly gets translated into a warm glow of pleasure. I am happy to be paddled for long periods of time by the end of which my only desire is to have my hole opened up by a rampant cock and pumped full of cum. I have often wondered what it would be like to have a dildo in my hole and have it hit with a paddle so that simultaneously i feel the dildo being violently forced inside me and I receive a stinging slap on my ass.
I have lots more pain and pleasure examples to share but I would be interested in hearing from other guys about what they have experienced.