She knows about dentist appointments and soccer games and romances and best friends and favorite foods and secret fears and hopes and dreams. A man is vaguely aware of some short people living in the house. Women look nice when they wear jewelry. A man can get away with wearing one ring and that's it. Men use restrooms for purely biological reasons.
Women use restrooms as social lounges.
Men in a restroom will never speak a word to each other. Women who've never met will leave a restroom giggling together like old friends. And never in the history of the world has a man excused himself from a restaurant table by saying, 'Hey, Tom, I was just about to take a leak.