Why are you getting nervous about it?
I've known that little factoid about women urinating standing up in some cultures for awhile. There's nothing wrong with it.
People seem to be so uptight about this, it's frustrating. It has nothing to do with pornography. The fact that the womens' reproductive organs were shown in pictures does not make it pornography. I'm sure you could PM guys here that link, and I'm fairly sure they're all mature enough to not say "WOW PORN! FUN!", because it's not porn, and should not be classified as such. It's called health. Why am I teaching you this? I'm sure you took health class.