The power and determination Zazi applies to her clit could move mountains I love the way she switches hands, graceful as a dance, without missing a single one of those ultra quick beats. It's so good lip bitingly, flushingly, her muscles all drawing up and together as she powers towards the ultimate expansion and contraction, an open-eyed, crying-out, intensely realised orgasm nearly as satisfying for me as it is for Zazi.
