because i 've learned every detail of my own body and what i like , and how to turn up the setting higher , or adjust the vibration lower , or thrust harder , or tease more , to yield the result , '' she said , laying out her pleasure-seeking clinically like it was a math problem , when to him it was a vision of sensual beauty-her on the bed , legs spread , learning the intricacies of her own body , a territory he longed to explore intimately .