He couldn't help but notice how her wonderful breasts were accentuated by it...and what he saw in the closet made him almost cum on the spot. "Show me," she said. "I... I don't understand ..." She rolled her eyes. "That many leg casts eh? All right then, show me your favourite. The ones that really gets you going when you imagine your legs trapped in it" He looked down at the collection of long leg cast of various colours, all so smooth, so comforting, so exciting and enticing... He spotted the 2 long purple casts slit open and closed by a Velcro strap. He reached down and pulled these two out, excited by the idea of the touch of it despite himself. Melanie was nodding approvingly. "I can't say I'm surprised," she said. "Now, let me see." He frowned, confused. "I don't understand?" She rolled her eyes again and leaned closer on her crutches, her lips just a few centimetres away from his right ear. Was it his imagination, or could he feel a hard nipple pressing lightly against his chest through her t-shirt and bra? "Take off your pants and put them. On." The whisper was harsh and delicate at the same time. She stood back, and he thought about arguing then one look at her made him think better of it at once. He unlaced his shoes, kicked them off, tore off his socks and hastily undid his jeans. He paused a moment his cock was hard. "It seems you've got a little more down there than I gave you credit for," she complimented. "Now - on the floor professor and put both legs in the casts and tie them close with the velcro ." He slid his legs into the casts and closed them tight with the velcro. The cast were both bent at the knees so he was not going to be able to walk at all. His cock was so hard at the moment "Feel good?" she said smiling and lifting her own cast inches from his lips "Yes..." he breathed. She stepped closer and she rubbed his cock gently with her casted foot. Sliding slowly up and down his shaft as he half-closed his eyes and sighed deeply. "Good," she said. She stopped just as he was beginning to get incredibly excited, the pre-cum leaking from his throbbing head. "You and I are going to have great fun!" she whispered. "Yes... Yes, I do. I'm...helpless." She nodded approvingly. "I'm glad to see you're getting into the swing of things. Now..." He was on the floor, looking at his reflection in the mirror. The image of the casts around his legs excited him, as did the reflection of Melanie's gorgeous face and casted leg. "How do you think you look, Professor?" she asked delicately, whispering into his ear. He struggled for a suitable answer. "Not... not anywhere near as beautiful as you in your cast," he tried, hoping he didn't sound to sycophantic. It was true though, she was stunning, and he...was helpless on the floor with both legs casted. "Aw, thank you professor," she replied She stared at his image in the mirror. He realised suddenly that she was dancing on her crutches. Moving her hips she looks so so sexy and hot. Her hand was working between her legs, teasing, testing, playing. She gasped involuntarily and closed her eyes with the pleasure of it. "No professor. Crawl to me" He looked unto the mirror, and saw her masturbating while keeping her cast inches form the floor. She stare at him as she continued to play. He was crawling using only his hands and arms. "Look at yourself Professor crawling" she whispered. "And look at me. Think about who'd doing this to you. What's being done to you. You like this, don't you?" He couldn't lie. "Yes." "You love it, don't you to be helpless with both legs casted looking this little tease on crutches masturbating?" "Yes, I do..." He was working hard crawling towards her when she hopped to him and and pushed him over. He glanced back up and saw her grin. "That's right Professor, you're mine. You'd like a good, hard fucking, wouldn't you?" "Yes." "A proper fucking?" "Yes!" "Open wide and take off the one cast" she whispered suddenly. He did what she asked, what she ordered and then...he finally understood what she was up to. He bent his left foot sideways, bending his ankle. Without any warning with all her weight she step on his ankle with her cast. Between the weight and the angle, his ankle tried to resist to the attack but failed. They both heard the ankle break. He moaned in pain like noth he never felt anywhere near as good as it did now. "Is that what you wanted?" she said. "Yes... God yes..." "Look at me," she whispered. He looked up to her. She stared back at him. Then she rubbed her cast all over his broken ankle He couldn't help it, he cried out in pain. "Look at me!" she commanded. He looked up. "Look at who's doing this to you! You masturbated for a year imaginating me in a cast like this one." She carried on moving the cast around his broken ankle, almost brutally. But he didn't care. He adored the feeling. When he was almost there she lay down beside her broken professor and with her free hand and took his cock firmly in her grasp, wanking him furiously. "Who are you?" "Your Injured professor!" As he cried out while her toes at the end of the cast pushed on his ankle, his cum splattering against her fingers. Before kissing him on the cheek as he leaned forward, breathing hard, sweaty and exhausted but utterly, utterly happy. "Good professor," she simpered "You know what Professor? I think this we are better to get you to the hospital and get your ankle casted. I want you while in your cast, this is going to be the beginning of a beautiful friendship..."