Well, my story,a few years ago i was seeing a younger guy(i was his first for nearly everything) he was amazed how good anal felt-once he got used to it,anyway one time after we'd been playing in bed most of day, we got busy and got round to him on his back, i was v rigid from hours of fun before, it was obvious that i was 'reaching parts not reached before' after a while he orgasmed, I'd not had a guy do this before he was not cuming anything but a bit of precum but he was writhing,curling,arching for some minutes, i slowed down at first, but he was adamant i kept going he was loving it.
I loved his reaction and on a later similar occurence i came at sime time as he writhed,it was so great making someone orgasmic without their cock being the centre of attention.
biggest shame was he was totally bottom with a 9-10 inch cock to point that i cud suck him while fuckin him.
good times