A recent study shows that women watching erotic films are stimulated in parts of the brain that drive emotion and planning instead of the parts of the bodies their husbands usually use for thought.
While we're thinking about new positions and ointments, they're thinking "This is the silliest movie I've ever seen in my life, but look at hubby over there drooling and glancing at me. Maybe a long call to Mom or just relying on the old migraine will do. If not, I'll be in handcuffs and feathers for hours."