I saw this thread, and thought I'd share my 2 cents with you. I started squirting about 4 years ago while I was in a really horny period of my life. It was something that I had wanted to try for many years, but I couldn't ever quite achieve it. Then one night, when I was drinking tequila and I had been watching some squirting porn and was really turned on and excited about doing it, it happened. Not really a lot the first time, and in fact, my partner wasn't convinced that I had actually done it at all, but I knew, because it was such an intensely pleasurable experience.
After that, I could do it just about any time I wanted. I explored it as much as I could, and now I am what you would call an extreme squirter, ie. I can shoot cum across the room and squirt all night long, over and over. The more you do it, the more ecstatic the experience is. And, it's addictive. Contrary to what people might think, it is a choice for me to squirt or not squirt with my orgasms. I usually choose to do it, but on occasion, I don't want to, so I don't. It's like a new option lol. And it's a different kind of orgasm, that can happen independently or in conjunction with a clitoral or vaginal orgasm. I hope that helps anyone that has questions. If you want to see me in action, I have videos online, if you just do a search for me on yahoo. Soon, I'm going to do a series of instructional squirting vids for anyone who wants to learn how.
I'm always happy to see people discussing it, though! Great forum