Jake strained valiantly to beat his approaching orgasm back. He couldn’t cum, not yet. His sister had to satisfied before he could even think of getting his own satisfaction.
He was giving his beloved Jenny his best, stroke after deep delicious stroke, driving her over the top to another shattering orgasm.
He held still to let her recover for a minute, lightly kissing her thick soft lips before he began to grind into her again with slow, deep strokes, settling down on top of her and letting her firm breasts flatten against his chest.
Jenny ran her fingers through his curly black hair and pulled his head down until their lips met.
Jenny’s lips… So thick and soft, her kisses were the sweetest thing he had ever tasted.
It was just too much for Jake. He could feel his second load boiling in his scrotum. Deep inside Jenny’s tight wet pussy, the head of his cock was screaming for release, and Jenny knew it.
“It’s okay Jakey… shoot your cum again… that’s it Jake, cum for Jenny… cum inside me…” she whispered in his ear, locking her legs around his back, pulling him in, lining the little slit in the head of his dick up perfectly with the little hole in her cervix.
Suddenly, with a soft grunt, the thick base of Jacob’s cock began to surge.
His scrotum lurched forward, propelling the first hot rope of his thick rich sperm up the tube in his dick to burst from the little slit in his glans, straight into Jenny’s womb.
Throb after throb shot rope after rope deep into his sister’s belly. Jenny could feel each hot jet penetrating her cervix, flooding her womb, spreading out inside her. Jenny suddenly wished that her brother’s sperm would find her egg, and fill her belly with his baby.
At last his throbbing cock began to soften and Jenny’s tight pussy spit it out, followed quickly by the semen that had overflowed from her sperm packed womb.
Jenny laid her head on her brother’s muscular chest.
“Should I have pulled out Jenny?” he said, slightly panicked at the realization of what he had done.
“Don’t you worry about that Jake. You can always cum inside me.”
“But what if I get you pregnant Jenny? I’m your brother!”
“If you get me pregnant it’ll be no worse than Daddy getting me pregnant. Stephanie came out just fine!”
The look of shock on Jacob’s face almost made Jenny laugh out loud.
“Yes, Steffy is your little sister. So is Julie for that matter. Daddy’s been fucking me and April since you were about 5 years old!”
Now she was laughing. Jake’s innocence was hilarious for some reason. She suppressed her giggles and looked him in the eye.
“Jakey, please don’t worry. I always wanted another baby after Steffy, but there’s problems.
She paused, a wistful expression spreading across her face.
“It’s really hard for me to get pregnant, Jakey. It’s just the way I’m made. And when I do get pregnant, I always seem to miscarry. I’ve had six miscarriages and one successful pregnancy. Even that one was far from without problems”.
Jake could sense a kind of sadness in his big sister that he had seen before, every time she miscarried, although he hadn’t realized why at the time.