This story was requested by CeeBee42. As a request, the chapters are shorter than usual. Also, all characters in sexual situations are 18 years or older.
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"Member Humility Winthrop at the door," the computer announced in its feminine voice.
"Let her in." Jacob had taken to locking his door lately. He was so often unable to avoid handling his new penis that it seemed like a worthwhile precaution. He sat up in bed, with the covers up to his waist. The door slid open and Jacob smiled at the young, bouncy woman that entered. He very much liked his sister-in-law for many reasons, not the least of which was that she was the only member of his family shorter than him. It was nice to feel tall once in a while.
"How are you feeling today, Jacob?" Humility walked in wearing a white lab jumpsuit that hugged her curves. She carried a tray of medical equipment. "I'm here to run a few tests. Your father and I are going to get to the bottom of this." Her smile filled the room with warmth.
"Thank you, Lil." Jacob found that her presence excited him in new ways. What had the fertility drug done to him? He struggled to prevent a boner from popping up. His gaze moved to the window. He tried to focus on the distant stars. "So, what do you know about my condition?"
"I know everything." She sat down next to him on the bed and picked up a scanner. "And nothing." She pushed back Jacob's brown hair and pressed the device to his forehead. "Shh. It's okay, Jake. Don't look so upset. It's not your fault. It's all part of God's plan."
"God didn't deform my ... you-know-what. The computer did." Jacob strained against his dick. He could feel it rising. He willed it to stop. He promised himself the second Humility left, he'd fap.
"God is in the computer, Jacob." Humility put the scanner back onto the tray and picked up the injector. "We are the Errand into the Wilderness. Just like the colonies of old. Look around, little brother, His will surrounds us."
"So, you're not grossed out by me?" Jacob looked back at her. She was very pretty, with her elfin features and her black hair tied back. Did God want Jacob to see his brother's wife naked? Because that was the thought that burrowed itself deep into his brain.
"Heavens no. You're Mason's little brother. We both love you." Humility smiled as she moved the injector onto his arm, but she felt something wrong in the room. It felt like walking down a familiar path, but suddenly stepping out onto air where solid ground should have been. "Hold still, this will sting a bit." Her eyes dropped to the blanket between Jacob's legs. There was a visible lump there and it seemed to grow. A part of her mind told her to do a thorough visible inspection. Another part of her mind, the sane part, told her to leave the room as quickly as possible. She knew what was growing under there.
"Okay." Jacob tensed, but the sting barely registered. "Can we go back to cryo, Lil? No one's told me yet, and I don't want to be an old man when we get to New Canaan."
"We're working on that, too. Don't worry, this is all part of His plan." Humility nodded, stood, and smiled stiffly. "I'll run some more tests." She picked up the tray and walked briskly toward the door. "Get some rest," she said without looking back.
"I will, bye." Jacob watched her round butt disappear and the door hissed closed behind her. "Errand?"
"I am here, member Jacob Winthrop." The computer's female voice was so comforting.
"Lock the door, please." Jacob waited for the click and then threw his covers off. His dick was still at half-mast. What an effort it had taken to keep it there. Even partially inflated, the thing looked bloated and it pulsed rhythmically. Jacob grabbed his dick and fapped with both hands, all the while thinking of his little sister-in-law with her pretty, elfin face and her curvy, inviting body.
~~
"I don't want to see him." Pricilla clasped her husband's hand tight as they walked down the Spartan corridor. "It's so unnatural. What if he's contagious?"
"Jacob's your little brother, dear." John squeezed Pricilla's hand and gave her a confident smile. "He needs our support. Imagine what he's going through. Anyway, it's not contagious. The autodoc would have warned us. Isaac and Humility are working hard on a solution. Trust in Him. Okay?"
"Okay." Pricilla squeezed back. They stopped at Jacob's door. "I haven't seen him yet, does he look scary?"
"I dropped by yesterday." John pressed the doorbell. "He's the same as always. Have some faith, Pricilla. It's going to work out."
"Right." Pricilla took a deep breath and the door slid open. "Hello, Jacob." She put a big smile on her face and walked into the room with her husband. Their mom had set Jacob up with a nice space. It was large, with an extensive window bank and calming wall colors. "How are you?" She walked into the room, squeezing John's hand so tight her knuckles turned white. They stopped about halfway into the room, and the doors slid closed behind them. Jacob sat in a recliner looking out at the stars. He spun the recliner when they entered and smiled. Pricilla was surprised. "You look good. Healthy even."
"Thanks." Jacob stood up and made sure his long, white robe covered everything. Their normal jumpsuits were too revealing with his new package, so he'd taken to wearing robes. "I feel ... okay." He took a few steps toward them. "Thanks for stopping by. It can get pretty lonely in here."
"Of course, Jake." John's eyes lit up and he dropped his wife's hand. "I almost forgot. Look what I found." He reached into his back pocket and pulled out a baseball. "It's real. Found a whole room with stuff like this. I guess they wanted to make sure we didn't forget Earth." He tossed the ball to Jacob.
Jacob bobbled the catch and the ball dropped to the ground. All three laughed.
"Same old, Jake." Pricilla let out a sigh of relief. She picked up the ball as it rolled to her feet and stepped over to offer it back to her eighteen-year-old brother. "Hey, you look sorta funny all of a sudden. Your face is all red." She stopped a foot away from him, hand outstretched with the ball. He didn't take it from her.
"I ... I think ..." Jacob's eyes had a distant look. "Oh, no. Something's happening." His legs and arms trembled violently.
The baseball dropped with a thud to the floor from Pricilla's hand. Her eyes went wide and her mouth opened in horror.
"What is it?" John quickly moved to his wife, put his arms on her shoulders, and pulled her away from Jacob. "What's happening?"
"Aaaaaahhhhhhhhh." Jacob threw off the robe, and his pale naked form glistened with sweat. His great, big dangling penis came to life and lurched bigger and bigger with each pulse of his heart.
"Oh, no. Oh, no," Pricilla whispered. She couldn't take her eyes off the horrific spectacle. "Do something, John."
"Right." John stepped toward Jacob. "Hold tight, let's get you off your feet, sport. I don't want you to hurt -" John never saw the flailing arm that smacked him upside the head and dropped him, dazed, onto his back.