body orgasm without massager

Hi guys - I've been using an Aneros prostate massager off and on for maybe five years now: first the Helix and then the Prograsm. I find that if I take the time to be relaxed, not rushed, I have good success in feeling all my pelvic muscles contract and, ultimately, other parts of my body, too.
In the last few months, I've found that I'm able to induce a body orgasm without the massager inside: just by breathing fully, deeply and contracting my glutes, anus and lower abdomen, I've been able to feel that electric feeling all over. When that's over, if I squeeze my organ, I can squeeze out some semen -- or maybe it's just prostate fluid (pre-cum).
Has anyone else had this kind of experience? It's been a nice "next level" to move on to.....