Getting my cock sucked by a woman who really, really knew what she was doing, and not only didn't object to my cumming in her mouth, but actually seemed to like it. Also, a particular J/O session when a teen buddy took me over the top and kept me there with very deft hand-job technique. We were in the basement, and I made so much noise cumming my mother called down to see if we were OK!
The first time I used the Dribbler technique to masturbate. I managed about 4 ejaculations before finally having to let it go. As with all subsequent uses of the technique, the resulting orgasm was simply mind blowing, although the more ejaculations that can be managed, the stronger the eventual orgasm - it's like all the sensations from all the orgasms get added up until it's no longer possible to contain the dam of pleasure, and eventually something has to give. It's not an easy method, but well worth the effort if you can manage it.
One of the Dicks gave me a blended orgasm. its a clitoral orgasm and a g spot orgasm simultaneously. The clitoral orgasm is intense, but only lasts about 3 seconds, uness you are capable of multiples. The g spot orgasm is drawn out, much more intense and incredible. He had me pinned down on my stomach, one hand under me teasing me, but witholding my orgasm and deep penetration, took about an hour and when It happened, my breath was knocked out of me, shook hard, screamed, and not to mention the bed was soaked. I couldnt move or speak for half an hour and I honestly felt like crying.