My name is Carla I am 34 and have a son David who is 15 and 16 tomorrow. My husband was tragically killed 7 years ago. Although I have had several dates since they have not come to anything and I had not had an encounter for over a year. We live in a small house near Manchester and I work at a local supermarket as a merchandiser. For the last few days I have been feeling horny, it always happens when I am having my period and I get hornier as it ends, I wished my husband was still here to give me what I crave. Watching David grow up over the last year he has taken on most of the roles that his Father did all except the one that I needed now. Putting the idea from my head I got ready for work. I was on the late shift and would not be back in the house before 9. As I worked through the day my mind drifted back to David, I didn't know anything about his girlfriends or what he got up to with them. I began to fantasise about how big he would be, his father was not over endowed with about 5 inches so I reasoned it would be similar in size. My god what am I doing? I'm thinking about the size of my sons cock, the thought of it spurting cum all over my breasts, was the final image. Hastily I started to load the freezers hoping the cold air would calm my passions, all it did was make my nipples even harder and bending over to reach to bottom of the cabinet sent my mind reeling as I offered myself to David. When at last the shift ended I could feel my panties were damp I went to the rest room and slid my index finger into my slit. I was soaking, I rubbed my clit, but had to stop when I heard others coming into the room, I would have to wait till I got home. I called at the pub on the end of our street and ordered a double vodka and tonic. I downed it in one mouthful, placing the glass on the bar I mouthed a thank you to the bar man and left. David was watching television when I came in, I went straight to my bed room and stripped of my work clothes and underwear putting on my short robe I dumped everything in the hamper in the utility room and went for a shower. The water cooled my body but not my urges and I directed a powerful spray onto my clitoris, I was trembling from the effects of the water and the orgasm that was approaching. David went to the hamper and now held his mother's panties to his nose he savoured the smell and they were so wet he licked the crotch. He decided to take them to his bedroom and he crept upstairs. Stepping from the shower I went to my room to dry off and continue to pleasure myself. I had not completely closed the bedroom door and as I lay there on my bed I was caressing my breasts with one hand whilst I had two fingers deep inside me, I was on a high and nothing now would stop my orgasm, I noticed a shadow on the door and the thought that David might be watching spurred me on. Unknown to Carla he had his cock in his right hand and he stroked all 9 inches as he buried his nose in the crotch of his mother's panties, I raised my hips as I came and plunged another finger inside, David caught his load of cum in the panties and hastily went to his room. After a few minutes Carla called out that he should have a shower and get ready for bed, She went downstairs and looking in the hamper she was pleased to find that her panties had been taken, She poured herself a large vodka then she changed her mind she wanted to be aware of what she was about to do and not to have the excuse of being drunk. She heard David go to the bathroom and the water running in the shower, she crept up the stairs into his room. She found her panties under his pillow they were full of his cum, she tasted the heady mixture and tiptoed to her room, pulled off her robe and looked at herself in the mirror. Running her finger through her sopping lips she caressed her clitoris and then crept back to the bathroom, silently she open the door, David has his back to her and naked she stepped into the room. She had not made a plan so she just stood facing the shower, she cupped one breast and rubbed at her pussy as she waited for her son to turn round. David sensed that there was something different and as he turned round Carla could see he was stroking his rock hard cock. Nothing was said as Carla opened the glass door and replaced his hand with hers, she took his right hand and placed it on her pussy, leaning forward they kissed and their tongues intertwined. Carla stepped into the shower and they explored each other's bodies. David was sucking gently on her nipples changing from one to the other as she moaned with pleasure. Carla was fascinated with his cock it was so much bigger than his fathers and she cupped his balls with her other hand, they were so heavy. Turning off the water she led him out of the shower, kissing and touching every inch as they explored and dried each other's bodies. She led him by the hand to her bed and laid down in the centre, David snuggled up to her and they kissed again. Carla's main concern, as she held his cock was if she would be able to take it, not only was it longer, it was much thicker than her husbands, She shuffled over in the bed and pulled David into the centre. She kissed him on the lips and then trailed her tongue down towards his nipples, she sucked and kissed each one and then holding his cock with one hand she placed a kiss on the tip. She flicked her tongue over the tip, pulling back his foreskin she took the purple end in her mouth and nearly gagged with its size. David had watched porno DVDs and even though he had not done it he coaxed his mother to straddle his head and he soon was licking her paying special attention to the hard bud that had now appeared at the top of her pussy. She could feel that she was going to cum and hoping that he would not stop she wanked his cock as she sucked harder. Her orgasm hit her like an express train just as her pussy tightened she felt a huge jet of cum in her mouth, she could swallow fast enough as it dribbled down her chin and back onto his balls. She continued to suck and stroke his cock and as it hardened she knew she had to have it inside her. Turning round she straddled him and wrapping her hand round him she gently lowered herself onto him. The head stretched her and once she had got used to its width she pushed a little harder till her she felt her hand touching her, she had never felt so full. Rising up the width pulled her pussy lips out and as she lowered herself down they squished and made a hissing noise, getting into a rhythm she began to relax as she became used to the invader. Lifting herself up she removed her hand and lowered herself taking in a greater length, rising up again so that only the head was inside her she pushed down just as David pushed up to meet her. She felt his balls on her bottom and knew she had all he had to offer. She was sure it would have hurt but she felt no pain and as she started slowly to ride him she started a climb to another orgasm. David had ideas of his own, and believing that what he had seen in the DVDs was what he had to do, he stopped his mother's movements and rolled her over onto her back, he had stayed inside her and now he started to fuck her with long fast strokes, she had never had such a feeling and as he lifted her ankles onto his shoulders she felt stretched as she had never been before, he was filling parts she had never knew she had and he pushed hard against her cervix every time he thrust into her. As Carla had her third orgasm David didn't miss a thrust, she was well onto her fourth when he pulled out and turned her over and lifting her up he entered her doggie style and soon was pounding away as he had seen in the DVDs. This was too much for them both and David felt his balls tighten and as he shot a wad of fertile cum into his especially fertile mother, she screamed out his name as her fourth orgasm shook her whole body. She rocked forward and as he pulled out she felt their joint juices flow out onto her leg. She hugged him to her and the kissed and cuddled him as she looked at the clock on her bedside table, 12.05. "Happy Birthday," she said. "I think you might want to sleep here tonight." She patted the bed next to her. "I'll phone in sick for both of us, I think we have things to do and talk about."