"Can you massage my back? It's so tight back there." His eyes opened as she turned on her stomach, waiting for him. She wanted to tease him some more, and he knew it. But he couldn't resist touching her soft skin. He looked down at her waiting body, following her spine all the way down to her wet bikini, over the luscious curves of her waist and shoulders, to her silky blonde hair. It was like she was his prize, just lying there, waiting to be had. He dug his thumbs deeply into her, and she sighed in relief. "Right there, Billy, That's perfect!" she sighed, and he pushed his thumbs into her golden flesh even deeper. This was the kind of girl that needed to be taught a lesson. He started to dig deeper into her precious skin, nearly clawing at the middle of her back, trying to hurt her. "Not so hard, Billy." But he ignored her and only dug harder. His thumb caught on the bra of her bikini, and he wanted to untie the strap, but he was still scared of her. But when she felt his hand on her strap, she spoke. "Leave that alone," she demanded. So, instead, he ran his fingers very lightly down her spine, making circles in her moist flesh with his fingertips, trying to arouse her. "Does that tickle?" he inquired, but she remained silent, holding her face to the bed. And now he was caressing the small of her back, pressing down, relaxing her, slowly making his way to the crest of her back where he found the elastic of her bikini. “Don't go any lower than that." She could feel his excitement rising, driving him wild with passion, and she was delighted that she could arouse him so very much and not fulfill him. "Want me to do your back?" Robin suddenly offered, looking back at him and seeing him smile at the words. He agreed, and they switched positions. He was now lying on his stomach, sinking deep into the couch, and now she straddled his waist, enclosing his wet trunks within her legs which were so long and soft. Now comfortable, her legs bent in front of her, she touched his shoulders with her toes, and he felt a wild sensation run down his back. What a soft touch she had! And in one motion, she was pounding on his back furiously, touching and hitting every' muscle she could, so that his entire back felt like it was being vibrated. Her touch was so warm and soft, yet it was so quick. She was stimulating every muscle and fiber in his back, and he'd never felt anything like it before. And she knew it, too. "Like that?" "Don't stop," he begged. She touched his back with her palms. "Getting excited?" And she dug her nails into his skin, trying to hurt him. But Billy loved it, and he pressed his swollen thing against the couch, moving up and down, trying to ease the ache . Now she was clawing him over his shoulder blades, down his back, around his waist and finally ending at his back. Her thumbs teased the inside of his trunks for a moment, and he wanted her to take them off, but then she removed her hands completely from him. He wanted her so bad, and she just loved to tease him like this. "Take it easy, Billy. It's just a back rub," she told him. Every time she started to bring the fire out of him, she pulled away. It was so irritating, he thought. But in a sudden jerk he rolled over on his back, so that now he was facing her. She was looking down at his manly chest, searching him out with her eyes, trying to make him homier. He could feel her warming up to him; he could feel her vibrating with desire, too. "That's all," she said, and started to get up, but Billy held her hard by the arm. "You've lost your mind," she said, and tried to pull herself away from him, but she couldn't.