"I'm afraid Penny."
"Nothing to be afraid of Mum, he loves you and you love him."
"But he's my son," Lorraine cried, "l can't."
"Did you want to Mum? When he kissed you, you felt his hand on your breast, you held his cock."
"I didn't hold it," she interrupted.
"Okay, you touched it through his trousers," Penny corrected, "but you still felt how hard he was... be honest Mum, did you want him?"
"No," her mother replied, "oh l don't know what l wanted... okay, yes, yes l did want him, but that doesn't make it right."
"Who's to decide what's right Mum, you're both adults, you both want each other, no-one is going to get hurt."
"What about your father, l can't bring myself to cheat on him with strangers, now you want me to do it with our son."
"Look at you Mum," Penny said looking at the way her mother was pressing her hand between her legs, "you don't even know you're doing it do you?"
Lorraine quickly snatched her had away, realising she had betrayed how her body was reacting to the thought of making love to her son. Of course she loved him, he had been a beacon light for her for nineteen years, ever since he had popped into the world, twenty minutes before his sister, the girl who was now urging her to commit incest.
"He's waiting for you Mummy," Penny said, sensing her mother's resistance melting, "think about him Mummy, his hard, muscled body above you as his beautiful cock buries itself inside you."
"Stop it Penny please," she cried, her eyes were tight shut but she could see him, just as Penny described him, smiling down at her as she felt the heat of him inside her, "oh god l'm going to hell."
"No Mummy," Penny replied, placing her hand on her mother's knee then slowly sliding up under her skirt. She felt her mother's thighs tense as her hand travelled up. "You're going to heaven Mummy, the heaven of feeling your gorgeous son pumping his seed deep inside you, you can feel it can't you? Feel the power of him as you beg him to fuck you. Open your legs Mummy, just like you're going to open them for Craig, do it... do it now."
Lorraine couldn't resist any longer, didn't want to resist. Her thighs parted as she felt her daughter's hands reaching he sodden panties, felt her fingers tracing the cleft of her pussy.
"That could be Craig's fingers Mummy, do you want it to be Craig's fingers?"
"Yes," she replied breathlessly.
Penny pulled aside her mother's panties, instantly locating the little bud of her clitoris. It was as if an electric shock had passed through Lorraine's body.
"Do you want Craig to do that Mummy? Do you want his mouth there, sucking your clit?"
"Oh god yes," she moaned as Penny slid her fingers inside her.
"That could be his tongue Mummy, that could be his cock... tell me Mummy... tell me what you want."
"Oh god yes... yes... l want him, l want him to fuck me... oh god l'm going mad, l want him inside me, driving into me, feel his body crushing down on me."
"That's good Mummy," Penny worked her fingers, finding her mother's clit with her thumb, rolling it as her fingers plunged deeper. "We're going to go downstairs and you're going to let Craig fuck you."
"Yes... yes please... oh god l'm going to cum."
"That's good Mummy, cum for me just like you'll cum for Craig, cum Mummy... cum."
Penny saw the faint shudder pass through her mother, felt her body relax as the juices flowed over her fingers.
"Tell me you want him Mummy, tell me you want your son inside you."
"Oh my god yes... yes l want him... want him deep inside me... oh god yes."
Penny felt her mother cum again as she continued to fuck her with her fingers, finally withdrawing them and putting them in her mouth to savour the taste of her. Penny was very pleased with herself, she had expected it to be a tricky conversion to get her mother to accept the idea of fucking her son, she hadn't realised how close Lorraine had been to breaking point, she presumed it was the incident when she was almost raped that had brought about the change.
As Lorraine calmed, she looked at her daughter, still sucking the juices off her fingers. She realised she should be feeling shame, shame not only because she had allowed her daughter to do that to her but shame that it had been the most satisfying experience she had had for years. She realised that she was still seated with her skirt pushed up and her thighs parted, her panties had been pushed aside, her pussy exposed, she felt totally wanton, but an overpowering feeling of warmth and love flowed through her.
"Thank you," she said, then realising the significance of those words she began to stutter. "I...l... oh god Penny, l don't know what to think."
"Don't think Mummy," Penny replied, "tell me what you want, think of how much you want him, how much you love him. Think of how hard he was, he wants you Mummy, every time he thinks of you he gets hard."
"What do you mean?" she said, "has he said anything?"
"Of course he has Mummy, we have talked a lot about you this weekend, we've both seen what you have become and we know that's not the real you, we both want you back as the kind, loving mother you used to be. He doesn't just see you as his mother, he sees you as a passionate woman and he wants you Mummy, l know you think it's wrong but what is so wrong about us loving each other."
"You make it sound as if fucking your son is normal."
"Not normal Mum, but understandable. You find Craig sexually attractive, of course you do, you're a normal woman with normal sexual desires, Craig is very attractive, crikey Mum, all the girls l know would drop their panties for him in a heartbeat, most of their mother's too."