I never believed it was real either, til it happened to me.
I had an appt with a couple and when I was giving the wife oral, she squirted. It was amazing, I felt like a fucking STUD lol
Then about 5 years ago I had a client that just turned me on so much that I squirted... during anal! I was on my back, he was on his knees between my legs and watching his cock in my ass when I came and he was so amazed that he had actually watched it lol
Another time I was with a client and I couldn't STOP squirting. I must have had 10 orgasms and we were both soaked, tits to knees lol
I wish I could just make it happen, but I have to be super turned on... relaxed, the situation has to be just right and I usually have to be getting anal