At first I thought he just wanted me to play with is ass, but I was surprised to find that there are medical benefits to a prostate massage and a man can achieve orgasm exclusively from a prostate massage.
A guy's prostate can be massaged by putting your finger knuckle-deep into his asshole and then rubbing the anal wall toward his penis. I don't like using my finger, so we went out and bought a skinny dildo and that works really well for us. He also likes the feeling of the dildo going in and out, but he can get really hard from just the prostate massage.
He likes it so much he's asked me to use a strap-on on him. If I ever do, I'll be sure to add it to the list here.
