so in psychology class we got to learn why foot fetishes are so prevelant! basically your brain stores the structural information for your body generally in the correct order (i.e. the info for your ears is stored next to the info for the head, which is stored next to the neck, etc.) BUT. The info for the feet is stored right next to the info for the genitalia and so sometimes these two sections of information can overlap and make you wanna lick some toes