this is funny, I don't know how it's true but it applies I guess
Manton:
I'm a 23-year-old male who not only stands to wipe, but has never even contemplated any other form of wiping. I had no idea there was any other way until I went to college and people would see me stand-up over the top of the stall (I'm 6'4", the stall was roughly 5'10") and confused everyone. Apparently it's a New Jersey thing, as I did an impromptu dorm floor census (of both sexes), and everyone from Jersey wiped standing up.
The whole article is pretty awesome. Especially because of how evenly split it is and how weird standers/sitters think each other are..or know they exist