Dang how I envy you...and wish I had learned to O that way when I was young. I do however have dreams in which I can O from just thrusting and light mashing, and I have always realized that I could potentially bring this ability into my waking life with the right amount of practice etc....but it is still a ways off in my future at this point. But I hope you do realize how LUCKY you really are for this blessing....because most women are spending their time figuring out how to have O's, let alone have them during intercourse.
Take heart for the things that give you an upper hand in the area of sexuality, Lucky! I have a few as well and I never knew the power they held until now....its great to have that type of sexual power. The more you are aware of it, the better you can use it!