So I've seen it but never done it that I know of. But I was watching some documentary about old women masturbating and apparently what you need to do is get all clitorally stimulated first, this fills some part in your vagina full of female ejaculating fluid... THEN to make it all squirt out once you've had a couple of clitoral orgasms you have a vaginal one and insert a penis or dildo into your vagina and that is meant to push pressure on where all your female ejaculate is and it squirts out. That is too complicated to even try so I think you either are a squirter or not.