Women have the physiological ability to pee standing up and aim accurately the same as men, it's just that our culture (and most world cultures) doesn't allow girls to learn to touch ourselves "down there" when we're of an age for toilet training. By the time I learned (in adulthood) that it's possible for me to pee standing up, I just don't have the patience to toilet train myself all over again - even in the shower where I won't have to clean up after my feeble attempts. I don't have kids, but it takes, what, months to a couple of years of every single urination for a little boy to learn to aim? I tried, I gave up.
