MORNING SINS part 2 SeXStoRY

I could not contain myself. During gymn class I had to slip away into the toilets and jerk off. I hurriedly pushed down my shorts and jock strap around my ankles and sat down on the toilet. The others were out in the gymn and I would not be disturbed. I conjured up my s****r Natalie in my mind. She was decked out in her school uniform--short sleeved white blouse, plaid skirt, white knee-high socks, and casual dress shoes. As I envisioned her my mind her blouse was open more the school allowed and the skirt was scandolously short. A few firm tugs and my cock was very hard. In my fantasy I located her in the middle of her school yard and with all eyes, both students and nuns, I began to undress her. The crowd formed a circle around us, all dead silent as they witnessed the scene. In the fantasy her tits just a bit bigger and my cock is much longer than in real life. All the girls and nuns give a collective gasp when they see it rise. Natalie sinks down onto her knees and starts sucking lovingly on my cock, sipping the pearls of pre come that have seeped out. Her face shines up at me. I lift her up and I now fall to my knees and begin licking that sweet little slit. It is long before she begs me to fuck her. 'Take my virginity, my love," she whispers. All eyes watch intently as I rise to my feet and poise my cock towards her virginal slit. It slick with a generous application of saliva. I make a gentle thrust with my hips and sink my cock at least a quarter of an inch into that virginal cavity. She lets out a sharp cry and clings tightly to me. Deeper and deeper I fuck my s****r. The tightness of her cunt is extrodinary. When we both come simultaneously the entire school yard erupts into wild applauds. Some of the nuns have reached under their habits and were fingering their own cunts. Their faces twisted and tightened. When I finally came the jet of sperm struck the metal door of the toilet stall and dribbled down. I wrung out the last few droplets, cleaned myself off and rejoined the rest of the class. It was merely a temporary solution. I remained in my fog for the rest of the day. I could only imagine how Natalie was feeling. I blew off a few friends offering to hang out after school just so Natalie and I could enjoy the brief amount of time alone together before our parents got home. I got home first and paced around anxiously waiting for her to walk through the door. I turned and there she was. She dropped her school books on the floor and ran into my arms. We both had a similarly strange day. I told about jacking off and the fantasy. Her eyes actually swelled up with tears as I told her this. I kissed her sweet face. I put my hands up under her plaid skirt and kneaded her taut buttocks. Natalie had opened my pants and worked my cock free, stroking in firmly. As we stood there in thre middle of the living room a sudden chilling thought crossed my mind: If our mother happened to come home early as she has done numerous times in the past what a sight she would see. The thought scared and thrilled me. Mom was a very beautiful woman with a slim figure. More than a few wet dreams featured her in less than motherly positions. "We should go upstairs," I said to Natalie. "All right," she said with a wide dreamy smile on her face. From the living room, up the flight of stairs, down the hall, and into my bedroom, Natalie never released my cock from her grip. It was like short fleshy leash she guided me by. I had slipped her panties down just over her thighs so that at any moment I wished I could lift up her plaid skirt and look at her ass in motion. What an intoxicating sight it was. I left the door to my bedrrom open so that we could hear the front door open and give us time to compose ourselves. I had to keep the reality of the situation in my mind and not become so utterly lost in the delirium of the moment. Natalie was quick to undress. Her skin glowed in the soft afternoon sunlight spilling into the room. We knew our time was very brief. I lunged towards her and eagerly stuck my finger into her cunt. Her knees nearly buckled at the sudden sensation and I managed to catch her before she fell over onto the floor. This strange demonic smile stretched across her face as I continued to rub her clit. She was getting very wet. "Are you a virgin?" I aked. She looked up at me and responded with a simple nod of her head. "Is this the way you want to---" I could not even finish my sentence when Natalie kissed me hard on the lips. I guess that was her answer to my concern. I lifted her up into my arms. It was remarkable how light she was. I set her down on the bed and positioned myself between her legs, licking her for several minutes. She moaned and arched her body up off the bed. Her cunt had a musky sweet scent that made me lick her more. But I was always aware that time was not on our side. I knelt between Natalie's open legs. I rubbed the tip of my cock against her pink outer lips before proceeding. I could see the tense expression on her face. I leaned over and kissed her on the lips. She gradually relaxed, but quickly tightened again when she felt my cock advancing up her cunt. I tried to as gentle as possible as I continued inching my cock furher inwards. Her fingers dug into my shoulders and did draw some bl**d. I cannot imagine the pain she was enduring at the moment. She lay pretty still beneath me, her eyes squeezed tightly shut. "Do you want me to stop?" I asked periodically. She shook her head emphatically no and I continued. I was just on the verge of an orgasm when I heard a car pull into the drive way. I was so close but not quite there yet. In an act of thoughtless selfishness I began fucking her quite hard now. We had gone this far and I could not stop until it was accomplished. She whimpered softly but never asked me to stop. I'm not sure if I would have. When the orgasm at last arrived I let out a deep cry and at that precise moment I heard the front door open and our mother call out for us. "We're upstairs!" Natalie responded, her voice somewhat distorted with the emotions that must have been swirling in her mind. Natalie ran off to the bathroom to clean herself off. The sight of the bl**d smeared on her inner thighs made me feel a bit queasy and guilty. I peeled the bl**dy condom from my rapidly wilting cock. Downstairs I heard the telephone ringing. A momwent later I heard my mother calling up for me. "It's for you," she said. I quickly dressed and groomed myself and ran downstairs into the living room and picked up the phone. On the other end there was a soft breathing sound. "Hello?" I said thinking that it was a friend making a joke. "Did you enjoy yourselves," said the voice. It was hard to tell if it was male or female. "Excuse me?" "You two put on quite a show. I won't tell anyone." "Who is this?" The line went dead at the other end. I stood there froze in the middle of the room with the phone clutched in my hand. I had stupidly neglected to shut the blinds of my bedroom. Who could have been watching us. How was I going to break this to Natalie?