OK So I am obviously not female, how ever even gfs that swore they could not squirt, I was able to get them to be able to. I think it is that either they don't know how or possibly they can't do it them selves? I just know I was able to make them feel tons better when I should them how.
And as CinnamonDreams said, some girls do "Pour" or gush, instead of squirt but it's basically the same thing! Hope this helped.