It's time to put a stop to this insanity. I close friend is an MD, a GYN, who said it is a mixture of urine and other vaginal secretions that get ejected during orgasm. That's it. It's not some magical prostate gland the female has, it's an involuntary muscular contraction during orgasm that will eject urine and several types of vaginal secretions. If you've slept with enough women, you'd know because each woman is different and orgasms aren't all the same. I've been pissed on (or squirted, as you prefer to call it), farted on and even took a deuce to the chin once when a woman lost herself in orgasmic abandon. Momentary incontinence for women during orgasm is not unusual. It's sites like this one that perpetuate this idiotic nonsense and people believe whatever is depicted in a video as truth.
I dated a woman who was a heavy squirter, first time we had sex she squirt while I was eating her pussy. I thanked her for pissing on me and she said it was squirt not piss. She had me lay down in her walk in shower and she pissed in my mouth. You can tell the difference in taste.
The "squirt juice" as you call it, is scientifically thought to be a mixture of urine and natural vaginal lubricant. I've had women squirt and the taste is not urine-like, but remarkably similar to vaginal secretions, the color of male precum. However, due to the prevalence of squirting on porn sites, many women feel they're not normal if they don't squirt and between that and porn-induced male expectations of squirting, females often choose to release a bit of urine and call it 'squirting.' This has happened with several women I've been with and I can tell in an instant that it's urine.