When Monica gave Chandler a crash course on the seven erogenous zones (and how to use them to bring a woman to orgasm) in that classic episode of "Friends", seven wasn't just an arbitrary number. The primary erogenous zones are the lips, the neck, the ear lobes, the breasts or nipples, the inner thighs, the butt, and the genitals. Count 'em! That being said, these might not all do it for some women. You may find that other areas of your body are more sensitive to touch than the ones on the list.