He heard soft steps coming up the back stairs. There was no doubt who it was. He heard the stairway door open and close. Then the soft pad of small feet. Caitlin entered his bedroom clothed only in flip-flops and an oversized tee shirt with a large Tweety bird on the front.
“Hey hottie!”
She waved and crawled onto his bed. She pulled the sheet off his naked body and took his limp cock into her mouth.
“Ummm, you hungry?”
Caitlin raised her head and held his stiffening cock in one hand.
“I’m always hungry for you! How is it going with mom? She seems to be glowing lately”
Carter related the experience in the Japanese Garden.
Caitlin chuckled. “You mean our straitlaced mom was 69ing in public?”
Carter nodded his head. “Yes, and really getting into it!”
Caitlin licked Carter’s cock wetly from his shaved root to his bulbous head. “Is she better than me?”
Skillfully Carter avoided the obvious trap. “No one sucks cock like you do!”
“Good answer, Caitlin laughed,” Her mouth opened in a large O. She took his cock deep in her mouth until she felt the head touch the back of her throat. She let her saliva run out of her mouth and around his cock as she raised up.
Carter answered the unasked question. “And no, she can’t deep throat me!’
Caitlin swung her leg over Carter’s and walked forward on her knees until his now hard cock slapped her belly. She bent it down, rose up on one knee to get it under her. Carter watched the play of emotion across her face as she sat down on his cock and let it fill her pussy.
“Is her pussy tight?
“I haven’t fucked her”
Caitlin’s eyes closed as she slid back and forth on her brother. Her breathing became more labored. “Liar, she moaned!”
Carter gripped his sister’s waist and began bouncing her forcefully up and down on his raging hard on, slamming repeatedly into her cervix. “You little bitch! Do you want to fuck or quiz me about our mother?”
“Both, she groaned.” Her head dropped to her chest. She leaned forward and balanced herself on his chest with both hands. “But first I want you to fill me up! I want to feel your seed splash against my cervix. I want to know that your swimmers are in my womb, searching for my eggs. I want to know that we could create another life!”
Carter reached up, grabbed her nipple and pulled it hard. “You want us to have another baby, don’t you?”
“Yes, little brother, yes! I miss feeling the life we create growing in me. I miss that ultimate intimacy of our love!”
Sweat poured from their bodies as they increased their pace. Several times, he felt her vagina contract as wave after wave of orgasm overtook her body. As he felt his balls began to swell, announcing his orgasm, he wonder if his mother’s pussy felt as good as Caitlin’s pussy. As he fired rope after rope of his thick life giving sperm into his sister’s womb, an image of his mother pregnant, her large belly resting on his as she rode his cock swam into his mind.
Afterwards they lay next to each other. Caitlin’s head rested familiarly on her brother’s chest. She idly played with his chest hair.