She had let them in and then dropped her robe to the floor. She'd stood there with her firm breasts jutting out, the nipples already stiff with antici...pation and then she'd taken them upstairs to her bedroom. She had let them take turns fucking her, but always with an eye on the clock. Half an hour before her c***dren were due home from school she had sent them on their way.There had followed several weeks of almost daily sex as either Denny or Todd, and quite often both, stopped to see her. One. She then rolled me onto my back and climbed on me. She wasn't holding back tonight and I didn't understand why not. My grandmother and I still were kissing deep and I slid myself into her. I then started to really push up into her and she responded by riding back and forth. After a few moments I sat up and held her tight as she rode me fast. Her sexy hips were really thrusting back and forth. It was so hot. I stared to suck my grandmothers nipples and looked over and Mark was cumming on his. The whole room was filled with the smell of our love juices.I saw the clock; it was 9:30 pm. I called my Mom and told her that tonight I am staying with my friend; we both have to make some assignments and I will come in the morning. Sahil was very happy with my decision. Then whole night was our, no one was there to disturb us. We fucked whole night in different poses. At night, Sahil told me that we should go to balcony and have a fucking session there; I found it exciting and readily agreed. It sure seems like SOMETHING happened...To my considerable shock I discovered that everything below my waist wascompletely numb, and that I couldn't move my legs."I really hope that's the result of the spinal anesthetic," I muttered.Before I could really begin to worry, a nurse came in with an ice bag."Okay, tell me when you can feel this," she said, holding it against mythigh and gradually moving it higher."Nope... Nope... Nope... Now." Good," she said, "it will take perhaps two or three hours.