This will make more sense if you read the earlier parts. Don't worry, they're fun, action packed, and build the tension. Read them first! Also, all characters in sexual situations are 18 years or older. Enjoy.
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The corridors of Errand into the Wilderness were dimmed to simulate night. As God's children, Pricilla knew that wherever they travelled they needed to heed the laws of their creation. They should remind themselves of the firmaments of the second day. Land, sea, and sky were far away at the moment, but they had the holopark and imagerooms to remind the crew of their play in His creation. They must also observe the day/night cycle which would lead to the sabbath. Without reminders of their first home, they would cease to be human and might fall back into the animal kingdom, as had the rest of Earth since the Fourth War. Pricilla shuddered to think of the heathens and polygamists back home.
As she walked down the darkened corridor, Pricilla shuddered again. What now separated her from those they had fled? Her brother was now a depraved creature, and she was sneaking out of her husband's bed to perform marital bonds with that rapacious thing between Jacob's legs. Bonds that should be reserved only for John.
"Errand?"
"Yes, Member Carver?" The computer's feminine voice had a soothing quality.
"Is my brother's door locked?" Pricilla could see Jacob's door just down the corridor in the dim light. Her breasts ached as they pushed at her Colony Control uniform. Her underwear stuck uncomfortably where her wetness spread. She started to waddle a little, which would have looked ridiculous if anyone was up at that hour to see her. Fortunately, she was alone.
"Members Mason and Humility Winthrop have locked their door."
"Stupid computer." Pricilla got to the door and stood. Silence blanketed her. "You know I'm talking about Jake."
"Member Jacob Winthrop's door is unlocked."
"Okay. Go away now," Pricilla said to the computer. She was irritable and taking it out on their innocent ship. Was it the expectation of that pure joy that made her so tense? Was this what the heathens meant by 'needing a fix'? Pricilla opened the door and stepped into the room. The only light fell in through the windows from distant stars. She could hear her brother's soft breathing as he slept.
Creeping across the room, her eyes adjusted to the darkness. She found his bed and looked down at him as she unzipped her uniform. Heaven help her, he had night wood. While Jacob slept on his back, his penis propped up the blanket with its hardness. She could see it moving under there, like a creature looking for a way out. She stepped out of her uniform. Pricilla was here to give the vile thing what it wanted. To ease Jacob's plight. It was the sisterly thing to do, even if John would never understand.
When she removed her bra, her boobs dropped out of confinement. That wasn't quite right, was it? Her boobs had always stood so small and proud on her chest that they didn't drop. But they did now. Pricilla tentatively lifted each tender breast. They were definitely bigger. She felt like she was having a second adolescence. Somehow, she took these new strange changes in stride.
The thing under the blanket seemed to writhe with more urgency. Could Jacob's penis know she was there while he slept? She'd heard a heathen's penis had a mind of its own, but she didn't think that was what the saying meant. Jacob's breathing remained calm and even. Pricilla trembled with excitement as she removed her panties and put them on the pile of her clothes.
The blanket was smooth and soft under her fingers. She pulled it down his body. Normal skinny chest for an eighteen-year-old colony settler. Normal belly, slightly concave. But what was next was anything but normal.
Despite knowing what she would find, a gasp escaped Pricilla's lips as she uncovered the behemoth. It moved in a way God had not intended human parts to move. Yet, according to their scripture, it had to be His work. Clear fluid wept from the head and ran over the veiny protuberances. Her heart beat a mile a minute. She thought about waking her brother tenderly with her mouth, but she needed it inside her. For Jacob's own good, of course.
Pricilla climbed onto the bed, straddled Jacob, and looked down at his sleeping face. He looked so content. Her heart surged at the thought that she was about to bring him more joy still. With her husband, she would have to reach down, find his manhood, and insert it for him. But with Jacob, she had only to lower herself enough that his thing could work its way in. And that's just what it did.
"Oooooohhhhhhhh." Her hips gave a few involuntary jerks as she sank down and felt the penis exploring her insides. "It's where it belongs," she whispered. "I will tame this beast." She rocked her hips and ground her little button into her brother. Within minutes, she quivered her way through an orgasm. It gave her delicate, sweet joy. But, of course, such climaxes were only a prelude to the eruption that would happen within her when her body accepted his sperm.
"Mom?" Jacob blinked his eyes, trying to focus.
"It's me ... Jake." Pricilla switched her movement to a bouncing ride, like taking the stud out at a canter back on Earth. She bounced high enough that it would have dislodged her poor husband every time, but Jacob stayed firmly inside her.
"Oh, Pricilla. That feels so good." Jacob reached out and put his hands on her narrow thighs. He could feel her muscles clenching and unclenching with her efforts. "I was ... just dreaming about my ... balls. They hurt."
"I know you need us to ... ugh ... ugh ... help you." Pricilla threw her head back, her blond hair falling back behind her shoulders. She looked up at the ceiling. She was going over the edge again. "Don't you worry about ... your pent up ... stuff ... anymmmoooooooooooorrree." Pricilla's shoulders jerked forward and she convulsed with pleasure. That mammoth penis had just found one of her weak spots and sent her mind spiraling. She wasn't taming it. It was taming her.
"You're ... so beautiful ..." Jacob's eyes searched her form in the dark. Her breasts flopped on her chest, her small dark nipples standing out on her pale skin. Her slender, strong body twisted this way and that. She was usually so regal in her bearing, but she had sunk to something less than that with him. He wished he could see the triangle of blond hair between her legs, but it was lost in shadow. He could, however, see the outline of his long cock plunging in and out of her. It was a miracle that it fit. He let her ride him for a long time, drinking in the sight of her. Eventually, his grip on her trim thighs tightened. "I ... needed ... this ... ugh ... thank you ... aaaaaahhhhhhhhh." Jacob roared out his pleasure.