There is a structure in the urethral region that can cause the phenomenon known as squirting, and when you see a woman squirting from what looks like her urethra, you're actually seeing fluid being released from her
Skene's gland. Studies of Skene's gland shows that they are in slightly different locations on different women, and in some cases, missing entirely.
When you get really wet, those are your
Bartholin's glands doing their job.
I've definitely squirted from my Skene's gland before. It's not urine, nor is it a vaginal secretion. It's different.