Author's Note: The main character and his sister haven't been named yet in this chain, so I'm naming them myself.
"You were about to hop in bed with me," I say, quickly typing into Master PC to make it true.
"Oh yeah," says Molly my sister, and she quickly jumps onto my bed, her boobs jiggling as she does, and gets under the covers and looks at me.
"Aren't you coming?" she asks.
"Uh..yeah," I reply. I quickly take off my clothes, and get under the covers with her. With a quick command Molly cuddles up to me, and I feel her boobs press against my chest, and my hard dick rubs up against her 15 year-old body. Enjoying this feeling, I get a great idea.
"Hey Molly," I say. "You wanna feel something cool?"
"Jack," she replies. "We may be naked in bed together but we're not gonna have sex."
"I didn't mean that," I reply. "Tell you what, I'll just show you." I reach over to the PC and begin typing.
Molly will immediately have an intense orgasm that will last for a full minute.
"Hey, what's that program?" Molly asks. "And what do you mean Molly will have an-OH!" Molly moans as I hit enter. She cuddles up to me tightly as her pussy fills with intense pleasure as she has the greatest orgasm of her life.
"Oh! Oh God! Oh God That Feels Good!" Molly moans as she writhes against me. I hold onto Molly's ass as she cums and cums. I feel a wetness coming from her pussy that rubs against me. Finally Molly comes down from her climax and looks at me.
"How the fuck did you do that?" she asks, panting.
"There'll be time more explanations later," I reply. "In the mean time I think we could do with some more pleasure."
5 seconds after this command has been entered, Molly and her brother Jack will have intense orgasms that last for 1 hour. Jack will not run out of semen during this time.
"Ok Jack," she says. "This is weird. How did you make me cum just now, and what's that weird prograaAAAA-OH GOD!" We both moan loudly as we cum harder than ever before. I shoot my jizz all over her body as we cum and cum and cum.
"OH GOD! OH! OH HOLY SHIT!" Molly screams. Unable to resist each-other any more, we begin making out, moaning into each-other's mouths. Positioning my dick by her pussy, I thrust into her, and we both scream in pleasure from the sensations fucking each-other. We cum for the full hour, before falling asleep in each-other's arms, my dick still deep in her pussy.