If you look at some of the links posted women have been documented squirters since the 14th century. The problem is that Science is divided on it's consistency and what it contains. Unlike some posters, you don't need a pair of testicles you need a Prostate. There's alot of older porn where this happens, From the 80's at least to now.
Problem is as always when it comes to a woman's body people are stupid. Since primarily men are researching it, they play down a woman's role in sexual situations ALOT. A womans vagina isn't that deep so stuffing it with milk is ridiculous. The only way to stuff a pussy with milk is in certain positions and her ass HAS to be in the air, or it leaks out.
Like so..
http://xhamster.com/movies/60267/milk_squirting_contest.html
This is real
<iframe width="510" height="400" src="http://xhamster.com/xembed.php?video=719914" frameborder="0" scrolling="no"></iframe>
This is not,
These women need an Enema to load their bodies with liquid to "squirt"
http://www.xvideos.com/video957426/asian_enema_squirt_contest