https://goaskalice.columbia.edu/female-ejaculate-where-does-it-come
That's not to say that what you see in porn is real however having met a number of ladies that work in the industry and a few that have specialized in female ejaculation I can say that from what they told me for them it was real (and they had no reason to lie to me). Some women can easily orgasm via the vagina and for some once they have learned to ejaculate they can not only easily repeat it but often have trouble not doing so, for others it's not common or easy but can be done and for some it's a bit like a unicorn - some sort of mythical creature they would like to experience one day.
Either way it's not urine anymore than male ejaculate is urine and though it's very possible the porn industry is faking it some of the time why not just enjoy the show, a lot of what we see in porn isn't real if it were then Pizza Delivery Guy would be the most sought after career in the world. :wink: