If you want to get on a guy's good side, you'll have to get on a guy's backside.  Even though plenty of men will shy away from the fact that they are actually quite down to have you play with their hole, they're not always going to be quite so eager to mention it.  This is touchy business, so you've got to approach it with mucho sensitivity.  That being said, once you've got your hands on his business (with his to, his anus), you'll want to know exactly how to handle the goods.  Keep reading to learn more about the best prostate massage for the ultimate male orgasm.