But the main reason is, it is just not medically possible, it is a myth, a hoax, and it's time put down this dog.
Let me lay out a few facts, plain and simple, before going into details, because it seems some people are still confused, and I can't blame them.
1) Is squirting real?
Yes, squirting is very real, but it has nothing to do with orgasm unless your timing is good, and it is NOT female ejaculation.
2) Do females ejaculate?
No, females do not ejaculate, males do.
3) What is it, then, and where does it come from?
Any copious fluid expelled by a female during sex, spontaneous or not, comes from the bladder. This much HAS been proven. And if it comes from the bladder, it is urine, this is the bladder's only function. It should have less concentrated levels of urine components than say, your morning urine does, but that's all.
4) I agree it's often faked in the movies, but..
No buts! It is either urine or preloaded water. Period. There simply is no other structure or organ in the female's anatomy capable of producing this copious fluid.
5) My girlfriend squirts, and believe me, it's not pee!
Sigh. Until you have this mysterious fluid tested by a credible medical laboratory, I'm sorry, I don't believe you. Why has no one been able to do this in over a decade, anyway? This is very simple, anyone with a microscope and a rudimentary knowledge of urine components can do it.
6) But this was different than pee. It was clear and had no odor, etc.
I'll bet you're not a morning person.
7) Are you saying my girlfriend is pissing on me? Eww! No, not in the way you're taking it. But if the thought is that repulsive to you, I suggest halting this activity.
8) Why are you being such a bitch about this, anyway? I'm sorry, I don't mean to sound so irritated. It's just that I get tired of arguing. These are the facts, like them or not, they are irrefutable. You cannot argue anatomy. If you don't believe me, research it for yourself, but NOT on the internet. Talk to your own doctor, or read a credible medical textbook, such as Gray's. Go to your local library. There is nothing they don't know about our plumbing and how it works. There are no more mysteries, undiscovered organs, or strange fluids that they don't know about. But in case the physical impossibility of this is not enough to convince you, here are some more points to consider -
Much has been made of the Skene's glands, so let's get this out of the way as well. I've included a blown up illustration, but keep in mind, these are almost microscopic urethral glands that simply cannot, no way in hell, produce any noticeable quantity of anything. But it was a nice try.