Becoming Multi Orgasmic?

I’m not sure if this is entirely relevant or even connected to Aneros use, but I was wanking a couple days ago and experienced the most mind blowing thing. I had an orgasm, thought I hit the refractory period, and about 5 seconds after the first orgasm, BOOM another one! Full blown pulsating, explosive, ejaculating, mind blowing orgasm. Just from wanking. Never thought it was possible and I never did anything in particular to try and cause it, I wasn’t...