As she pumped her hips, she desperately wished she had never taken him in after the car crash that had killed her daughter and her husband. He has always been a strange boy, and adolescence had only served to worsen the situation. She looked down into his face as she rode him, but there was, as usual, no signs of emotion – just that dead-eyed look and the vacant expression on his face that she’d grown to detest. Having regained her composure somewhat after her hysterical outburst when she’d guided his erection into her and lowered herself all the way onto him to achieve full penetration, she looked down at him, scanning his face for a sign of…well…anything – pleasure in the sex act, shame at what he was making her do – anything! But as always there was nothing there – just that awful absence.
Her eyes flicked to the gun. Christ knows how he had found it, but it had pointed unwaveringly at her since she had walked through the door just a few minutes before. She’d found him lying there naked, his erection standing proud. Even in her shock at discovering him like this, the first thought through her mind was “Jesus! He’s well hung!” Never did she imagine where he intended to put it. She felt her composure threatening to crumble as yet again the realisation hit her that he was now inside her. Inside her! She was impaled on her 16 year old grandson’s huge phallus and she was working to bring him to a climax and send his semen spurting into her. Dear Christ! He wasn’t wearing a condom! He was going to blow his load inside her, fill her with his sperm. Her face crumpled again. How the hell could this be happening?
“Sex. I want sex. Now.” That’s all he’d said as she’d entered the room. Before she could overcome her shock and respond – though God knows what she intended to say – he’d produced the gun and pointed it at her. She recognised it immediately as the one she had hidden in her bedroom for protection when her husband was away. It was real and it was loaded. “Peter,” she’d started to say, hating the quiver in her voice, but he’d just grabbed her arm and repeated his demand. “Sex, now.” When she’d tried to pull away he’d pressed the gun against her and cocked it. Then, releasing her arm he’d put his hand up her skirt, grabbed her underwear and yanked it down several inches. “Now.” And so, with trembling hands she’d removed her underwear, pleading with him in an increasingly frantic voice to put the gun down. She might as well have pleaded with the wardrobe for all the good it did. In tears, she’d hitched up her skirt, got onto the bed and, wide-eyed with horror, she’d straddled him. Fighting to keep control of herself, she’d reached for his penis, lowered herself down until she felt the head of it nuzzling her…and then, as she’d forced herself onto it and felt herself being penetrated, she’d lost it completely. With his erection completely inside her she’d slumped forward, supporting herself with one hand either side of her grandson, and bawled her eyes out. It must have been a good five minutes before the sobs eased off, and he had never moved once, never said a word, never let any expression cross his dull face. Inside her he’d remained rock-hard. He’d just waited until she was in control of herself and uttered one word. “Sex.”
So here she was, ten minutes later, working like crazy on top of him and still the bastard hadn’t cum. Though the moment couldn’t be far away now as he found a new word for today. “Faster.”
His expression didn’t change one bit when he ejaculated. As his semen spattered into his grandmother’s vagina, only the slightest widening of his pupils gave away the fact that he was finally climaxing. She only realised it herself when she felt him start to soften. Her face was a picture of sheer revulsion as she felt the growing wetness between her legs. Now ignoring the gun completely, she dismounted him, yanked the door open and flew to the bathroom. She didn’t even bother to undress as she turned on the shower and pulled up her skirt to wash his emissions away.
It was an hour later before she dared to unlock the bathroom door. There was no sign of him anywhere upstairs. Dripping wet, she gingerly walked downstairs and almost screamed when he spoke as she entered the kitchen.
“Breakfast.”
Source: reddit.com/r/sexystories/comments/udg9rp/fmincnc_his_first_time