I found this that somebody posted on another forum about it, and some links at the bottom:
as a squirter (someone capable of female ejaculation), i'd guess (from my own experience) that the bartholins glands theory isn't entirely correct, though it probably does explain some cases of female ejaculation. Sometimes, it does seem to come from that area, but the majority of the time (for me) it is definitely internal. The reason I can tell it's internal is that I often gush after the object/penis has been taken out of the vagina. If it were solely the bartholins glands, I would gush some fluid while the penis/object were still inside of me (because of the location of the bartholins glands). The penis/object (usually a vibrator...Smile) blocks the fluid from escaping. With the "cervical" (in quotes because I am not positive) female ejaculation, I can become dehydrated (it's happened 3 times) and rarely soak through the entire mattress. The fluid itself has no real odor and according to my husband, no taste. It's like water, with a slightly slicker feel (water with a itsy teeny tiny bitsy bit of lubrication/lube mixed in might be the closest I can come to describing it).
On an interesting side note, I also believe that there are far more than three (or some people say 4 and include g-spot) types of orgasms for women (clitoral, vaginal and anal)...Most people don't count female ejaculation in the number of ways that a woman can come/orgasm, but they should as it's entirely different from any other type of orgasm (for me, of course).
In my opinion, there are many types of female ejaculation (i've experienced three types of squirting personally, with one I have to use certain stomach muscles, i'm guessing that another type comes from my cervix and the third does seem to come from the bartholins glands or right at the opening of my vagina).
I also believe there are many other types of female orgasm (in general). Clitoral orgasms are different from vaginal orgasms are different from g-spot orgasms are different from the various types of female ejaculation orgasms and I also have experienced two other kinds (not sure what kind of stimulation...It's just a certain way of coming with those two...With one I see white light and with the other I come very close to passing out). Now, I have to mention that this is all me and may not be someone else's experience.
For the original poster, I most often have female ejaculation (of the cervical type) when I am in a position on top (riding). She may not be peeing on you at all, but may instead have the ability to squirt (female ejaculation). For the record, I use the restroom before sex and after and still gush (sometimes dramatically) during sex.
Finally, I truly wish they'd study the female orgasm more as I believe scientists are missing out on a lot of information regarding how women's bodies work. Personally, i'm fascinated by the way my body works (and my partner's bodies actually) and would love to have a definitive answer as to why my body works (in terms of female ejaculations and/or orgasms) the way it does.
Http://www.Umkc.Edu/sites/hsw/femejac/
http://www.Mypleasure.Com/education/sexed/
female_ejaculation.Asp?Cat=search