Scary and literally electric orgasm with cum, what was that?

Hey guys, I had an experience a few days ago that I can't really rate. Let me start by introducing myself a little so you get the idea: I'm 24 and have started to experiment with prostate massagers in Oktober 2013, so I've been using them since about 1,5 years. In the beginning things didn't work out as I had expected and I thought that I just had the wrong toys. So I bought these in the following order:

- Aneros Progasm
- Aneros Helix Syn, because I felt the Progasm was too big (which I still think)
- Nexus Revo 2, because I felt that I couldn't relax when having to contract any muscles in order to move the toy and I felt the Helix was too small (which I don't think anymore)
- Aneros Vice, because the Revo didn't seem to work at all for me and the Vice was smaller than the Progasm, bigger than the Helix plus it vibrated. I was very excited about this one.
- NJoy Magic Wand, because I had read about it and couldn't resist the positive reviews

I continously made small progress, had some "waves" rolling through my body at some time, feeling like I was hovering over my bed and entering some strange mental state but never really reached an orgasm. When I did, the feeling always suddenly seemed to shift, I had a orgasm with cum (more intense maybe, but still "normal") and afterwards had the usual "no masturbating ever again"-feeling. I soon started to realize that the toy isn't the trick but the experience, relaxation and concentration on the right feelings (allthough the Vice works best for me and I'm sure I could have never come this far with the Progasm, because it's simly too big and pointy for me. So the toy does matter).

Now let me describe the experience two days ago because I am really puzzled about it. I started a session. Usually I do a quick enema on the toilet using this because it makes me more comfy and clean. I don't remember how and in which order I used the toys but I'm pretty sure that I started out with the small Helix, getting everything nice and lubricated inside and warming up. May be that I used the Magic Wand and Revo too but I'm not exactly sure. However, when I had inserted the Vice and relaxed and lied there for some time, trying different stuff, contracting and relaxing, I suddenly stopped concentrating on the vice or any feeling and simply started breathing heavyly. At some point I had turned the vibration on so the Vice was vibrating. I don't know exactly why I started breathin like that but I think it helped me relax to breath fast and deep as if I had just run a marathon and I felt it was doing sth. to me. Suddenly I realized that something was building up and I just continued to breath, I forced myself not to concentrate on the feeling and not to try to keep it coming at any cost but to just continue to breathe. I suddenly realized that my hand and arms were tickling or bubbling as if they had gone dead. Later I realized that at this point I must have already had every available muscle contracted. The feeling started to get harder and the bubbling feeling came over my whole body. At this point I have to say that I have experienced waves of pleasure in the past that were tickling and pleasurable. But this felt like electricity running through my body. If you grab an electric fence and the electricity is low enough for you to let it flow through the Hand without pain, thats exactly what I am talking about. Also the electricity in the fence will make your hand-muscles contract and you will have a hard time letting go. That is also exactly what I am talking about. At some point, when I was already past the orgasm peak and I was still lying there, having the electric feeling, I got scared because I felt like I maybe couldnt move anymore. I tried to move my thumb away from my cramped and contracted hand, to my relief it worked, but as soon as I "let go" my hand instantly contracted again, as if some electricity was running through it. I realized that my belly, my legs, every muscle was cramping like that. So I sat up and "fought" the feeling. As I said before, it didn't even feel like some other experiences before, it didn't exactly feel good. It scared me a little. The feeling got less and less but in the anal region it didn't really go away. Then I realized that the vibration was still on and that was what I felt there.
However, when the electric feeling passed and I suddenly started to regain control over my muscles, the "no masturbating ever again"-feeling started to arise and I saw that I had cum on my belly. I was disappointed and reliefed at the same time. Disappointed, because that meant that my session was over. Reliefed, because for a second I had been afraid that that was the famous super orgasm everybody is talking about. But the cum and the "no masturbating ever again"-feeling meant that it was still not the pure super orgasm that you can experience multiple times in a row. But what was it then? Does anybody recognize what I am describing here? Has anybody experienced anything else or knows at least, what that "electricity"was? I'm starting to think I had some sort of epileptic seizure, triggered by the heavy breathing. Can anybody easy my mind?