I am a squirter, it's not urine, all women are capable of this, but it may be harder for some than others. I am providing a link to a very informative website on this topic in the hope (however vain) that it will curtail the astoundingly ignorant comments that I'm sure this thread will engender from those of you who are too immature/inexperienced/just plain ignorant of human anatomy, physiology, and sexuality.
I don't know why I'm doing this. I know the very people that need to read this the most will neither read it, nor be able to comprehend any part of it that happens to hit the back of their retinas. But here goes anyway.

SquirtingTruth: An honest and indepth look at female ejaculation commonly called gushing or squirting and male ejaculation.

edit to provide a Wiki:
Female ejaculation - Wikipedia, the free encyclopedia