I experienced my first squirter around 20 years ago, and at that time there wasn't much discussion or info about women doing this.
I always loved eating pussy, and at the same time sticking 4 fingers in the women's vagina.
One night I was doing this to her and she was having a bunch of orgasms and then finished the last one off with a hugh squirt right in my face. I didn't know anything about G spots back then but likely my fingers were giving her some stimulus on hers.
The best part about it was she didn't realize that her roommate (who had a hot body and I had messed around with a little previously) had come home about a half hour before and was definitely listening to her scream her head off through around 5 or 6 big orgasms.
After she had the last one with the big squirt she realized her roommate was home, and she said "ok, you can fuck me now, but you better do it fast and be pretty quiet". It was kind of fun having to fuck her quietly, it felt really good and she was feeling it too and struggling to stay quiet herself.
At the time we thought it was pee and she was always pretty embarrassed about it, soaking beds and car seats, etc, but I know now that it wasn't pee, she was a big time squirter. Actually I also got to take her anal virginity, she wasn't real big on trying this but when I finally slipped it in her voice went down about an octave and she moaned "ohh, I didn't know it was going to feel like that" and really got into it after that. She was actually pretty nuts and the situation blew up after a while but boy was the sex good while it lasted.
Second squirter, my ex-wife. She was always very sexually responsive, liked anal, toys, pretty much anything you could come up with. I would always massage her g-spot as just a different thing to do but in the beginning she didn't respond that much to it. But over time she began enjoying that more and more and I would do it more often.
Then one night it happened, she got really off on it and had her first squirt, and several more that same night. This really surprized us and over time her squirting got even more pronounced and we had a lot of fun with it. Unfortunately she also was a nut case and we drifted apart.
I'd love to have another squirter someday and one thing I learned is that at least some women can grow to squirting from a lot of g spot stimulation, so give it a shot fellas, work that g spot and over time you might get a nice surprise.