As anonymous, I recently sent my most intense orgasms Aug. second and after reading another gentleman, I too have something for the brave to try. No, this is NOT dangerous but takes a lot of will power.
As I am a lot older then most of you, I usually require a few days rest between ejaculations and if for some reason I go say five or six days, this is a favorite way for me to really relieve the tension.
I like porn but good stuff, not the kinky kind so get on a nice site and enjoy here at my computer. As usual, I get hard quite fast and as usual, I sit and stroke my cock which could be ten minutes to well over an hour depending on the sites I am visiting. Sooner or later though, that old familiar and wonderful feeling will return again (hope it lasts until the day I die) and I can feel my orgasm building. Not in my balls but way down deep inside. Can feel it coming up, past my prostate and start up the shaft of my cock.
You've got to know yourself well or practice with this. As soon as I feel my cum at the base of my shaft, when the feeling is so intense that one or two more strokes will get me off, I stop. Yes, stop stroking and just squeeze your mucles in your rectum. (Excellent practice too for ejaculation control with sex and a partner). Tighten your asshole so to speak. And not just tighten it, but tighten it on and off several times and without doing another thing, you'll cum and quite a bit. The feeling will be just as intense as if you kept stroking if not more so as your cock will want you to stroke it.
Now the great part. Wait maybe half a minute then stroke again and very soon, you'll get to the same spot once more. Again, do the same thing and I swear, you'll cum again. Oh, it's so fantastic you'll want to keep stroking but DON'T do it.
Give it a minute and go once more. YES, you'll cum again. I swear this will happen if you know your body. My best has been four ejaculations in a row in about four or five minutes and each one as good or better then the last. You simply will not believe the amount of cum you can produce during these ejaculations. It's mind control and muscles you use in your rectum. On your last one, you'll know it will be the last as you'll feel totally drained and if you are like me, your legs will be like jelly, eyes glazed and total euphoria and at that point, just keep stroking for the final ejaculation. It's really beyond discription and something many if not most will be able to do with a bit of practice.