Clifford was in two minds as he rang his grandmother's doorbell. From childhood he had always been comforted by the way she hugged him, clasping him to her matronly bosom, but lately he had become more and more disconcerted. He still loved the warm comforting softness, but in recent weeks it had started to embarrass him, because he had stopped thinking of it as her bosom. Now they were tits. Big tits. Big firm tits with big hard nipples that pressed into him when she hugged him.
It wasn't Nan's fault of course. She had no way of reading his thoughts, how she affected him. How he lay awake at night, stroking his hard young cock as he mentally pictured her naked breasts. He tried to dispel the forbidden thoughts as he waited for her to answer the door. When there was no reply he decided to check if she was working in her garden. Walking around the side of the house he looked over the top of the gate and stopped in his tracks. Wearing her shapeless 'gardening' dress, Nan was crouched by the vegetable plot, picking tomatoes and placing them in a pouch formed by her pulled up skirt, affording a perfect side view of her stocking tops and a generous expanse of bare thigh.
Ducking below fence level, Cliff peered breathlessly through the gap between gate and post, praying that she would turn towards him. His mouth went dry when she straightened, and still holding her skirt high, turning around slowly to survey her garden. All reason fled at the sight of her 'sensible' granny pants, and the vee of her crotch, and he pushed the gate open and stood staring.
Nancy rose to her feet, the improvised pouch of her skirt loaded with freshly picked tomatoes. She turned around slowly, checking out the rest of her vegetable plot. The sound of the gate latch made her look up, to see her grandson Clifford staring at her. "Oh hello Cliff honey." There was genuine delight in her smile. "What a lovely surprise. What brings you here?" It took her a moment to realise what he was staring at, and she lowered her laden skirt enough to afford a modicum of decency.
"I just thought I'd come see you," he shrugged, continuing to stare. "Anyway do I have to have a reason for visiting my Nan?"
"No, of course not." She couldn't help but notice a growing bulge in the front of his shorts, and she diverted her eyes quickly. 'Omigod, the dirty little swine has a hard on,' she thought, although the word 'little' hardly applied to what she had seen. She smiled to cover her embarrassment. "Come inside and I'll make a cup of tea."
Cliff took sat on a kitchen chair watching her, and depositing the tomatoes on the counter, she came to him, opening her arms. "Give your old Nan a hug" she said, pressing his head to her substantial chest. He groaned to himself. This was the last thing he needed. His stiffy had just started to go down, and now she was making it rise again by shoving her tits into his face. Her hard nipple seemed to be trying to bore its way into his mouth through his cheek, and he tried to move away, but all he succeeded in doing was shift his face sideways until the stiff bud was against his closed lips. Misinterpreting this as a deliberate attempt to kiss her nipple, she raised her eyes to the heavens. 'Christ, he really is horny.'
Breaking the embrace she set about making the tea, but the lingering feel of his lips sent her mind back through the years, to when Cliff's mother Tanya, and her year younger brother Phil were around the same age as her grandson was now. They had always been wilful and rebellious, determined to go their own way no matter what. A couple of years after Nancy and their father had agreed to a parting of the ways, she had seen Tanya leaving her brother's room clad in only her underwear, and when challenged she had become defiant.
"Yeah, he fucked me. So what? It wasn't the first time, and I doubt if it will be the last. If you knew how good his cock is you'd probably let him fuck you too. Christ knows you need it."
Nancy had been too dumbfounded to respond. Her daughter due to be married in less than four months, so why would she risk everything by having sex with her brother? It didn't make sense, quite apart from the taboo aspect. It was her whole future happiness at stake if her future husband learned that she was committing incest with her brother.
After two weeks of brooding and avoiding her offspring, she finally accepted that she had to bite the bullet. It had been two weeks of torment with her imagination in overdrive, and Tanya's words burned into her brain. She hadn't wanted to, but she couldn't help wondering how accurate her daughter's description had been. Then the moment she had dreaded arrived, and she found herself alone in the house with Phil.
Plucking up her courage she broached the subject, but he just grinned. "Took your time mentioning it didn't you? Did you have to think about it?" he taunted. She opened her mouth to tell him how wrong his actions with his sister had been, but the words wouldn't come. Involuntarily her eyes moved to his crotch, and he laughed softly. "That's what it is, isn't it? You're jealous. You want a share." She shook her head in denial, but he wasn't convinced. He stepped closer and put his hand on her breast, squeezing and stroking confidently. She wanted to push him away, but her arms seemed to be glued to her sides, so she was relieved when he took his hand away. Her relief was short lived though, because he reached under her skirt and pulled her panties to her knees.
"You do want this, don't you?" he whispered, stroking her clit. This time she could not deny it because even if she did her wetness would give the lie to her denial. He was right. No matter how forbidden it was, she did want it. She was jealous of her daughter. Seconds later he was inside her, thrusting, driving, and finally mingling his cum with hers.