That's because women are actually selectively deaf when it comes to listening to men. Actually, counting most major forms of verbal or written communication over the past five million years, approximately never. Anything men say is for other men. That's why a guttural grunt invented sometime soon after the dinosaurs became extinct, still conveys a lot of meaning between two men. Men are really bad communicators.
Women tend to communicate with each other on a whole different level.
Just think, if it wasn't for women, men would still go around grunting, farting and scratching themselves when attempting to communicate. On second thoughts nothing much has changed in the last 50-odd millennia. Women get to have the offspring and then stay home to educate their young in the ways of the world. They are taught that they should compete with other males for resources, more expensive caves, and bigger bathrooms. They teach the girls that it is their position in life to lord it over the men and to make sure that they keep them in the style that their birthright has accustomed them to.