Haha, very nice. I've attempted to explain this to women before, maybe I should try send them this video. On a related note a friend of mine was reading a book on the physics of mens rooms, and he has an equation to figure out which urinal to go for, I'll see if I can find it again.
That's not physics, that is cognitive/behavioural/social psychology. You'd be surprised how many human behaviours can be expressed in a mathematical formula...