Working title---Unfinished

Caleb pushed open the door to his apartment complex and walked into the lobby. His stride was slow, sluggish, heavy, his eyes foggy from a long night studying. As he dragged himself towards the elevator, something in the corner of his eye caught his attention. He had mail.

---

Caleb collapsed onto his bed, package in hand. He was sure he had not ordered anything recently, and his 14-year-old sister had no means to do so either. "It's probably some sort of promotional item, a sample of sorts." he thought to himself. Nevertheless, he was curious and decided to open it. The package was an ordinary cardboard box, and pealed up easily. The inside was packed with more brown paper, protecting a small glass vial from harm. "I knew it." he thought, before inspecting it more thoroughly. Inside the vial was a viscous green liquid, unlike anything he had seen before. The neck was blocked with an ordinary cork stopper. There were no labels on it, no logos or any other features that would lend some insight into the vial's content. All in all, the vial was hardly any larger than his middle finger. "Wonder what it is, though."

Caleb put the vial aside and grabbed the package again, giving it another look over. There was a small sheet of paper he must've missed on his first time through. He fished it out of the box and took glance over it. "You're one of the lucky few who..." Caleb stopped paying attention right then and there. It was obviously some sort of advert, though he kept skimming through it, perhaps as a result of his drowsiness. "...grants you the ability to swap and transfer...", "...is tied to your original...", "...relinquished if you..." Caleb did a double take. Did he imagine what he had just read? He quickly gathered himself and read the paragraph more thoroughly. "This brew grants you the ability to swap and transfer primary sexual characteristics between any individuals at will." he read, wide eyed.

Caleb quickly glanced back at the vial laying on his nightstand. Could it be true that what little liquid in the vial could grant supernatural powers? Just like that? It sounded outlandish, but it couldn't hurt to drink it, could it? He gulped and grabbed the vial and looked closer at it. "There's no way this is real, is it?" While not lacking in his nether regions, Caleb hadn't been a stranger to the thought of having a bigger package. And drinking this thick, green fluid would supposedly let him live out that fantasy.

Before Caleb had any more time to mull over what he had just read, the door to his room flung open. The loud bang made him lose his grip on the small vial, and it rolled off his bed and onto the floor. Caleb's sister, Aliya, strode boldly into the room. "You could at least say hi when you get home." she said, furrowing her brow.
         "Sorry, I'm just so tired today." Caleb responded, quickly forgetting about the vial he had just lost. Dealing with his sister was a nightmare. Especially when he was this tired.
         "Whatever." Aliya said nonchalantly. "It's your turn to make dinner. I'm hungry."
         "You've been home all day without eating? Geez."
         "Fuck off. While mom and dad are gone, you know we're supposed to share the house work, and I'm not doing your share." Caleb knew Aliya wouldn't let up when she was like this, so he dragged himself on his feet with a sigh, and started moving towards the kitchen.

---

Having finished both dinner and dishwashing, Caleb was ready to fall to sleep. Unfortunately, his bed was still littered with the paper that the vial came wrapped in. He spotted the vial on the floor, and picked it up on his way over. "Whatever, it can't hurt." he thought, and popped it open. He emptied its contents into his mouth without further hesitation and brushed the paper off his bed, not bothering to clean it up properly. The liquid was tasteless, cold and slimy, and he could feel it eel its way down into his stomach. Surprisingly, nothing stuck to the inside of the vial. "Let's see..." Caleb thought to himself as he collapsed on the bed. "Let's see if there was any truth to what that paper said." Tired of his sister's antics, he decided to mess with her some. Caleb focused intensely on the notion of swapping his dick onto his sister, fully expecting it not to work. And...

Nothing happened. "Go figure." Caleb thought as he drifted off to sleep, still fully clothed.

---

As Caleb was on his way back to campus the next morning, he mulled over the brew he had consumed last night. It would've been nice to grow his dick at will, but the notion was ridiculous. "I wouldn't steal a lot though. A quarter of an inch here and there would hardly be noticeable. I'm not a complete dick, after all." he thought as he walked, last night's drowsiness nothing but a fading memory.

---

Later, as Caleb was making his way home, he couldn't help but feel his undergarments constricting around his junk. Weird thing is, he didn't have a boner. Maybe the boxer briefs had shrunk during washing, Caleb speculated. It didn't help much on the pain, though. As Caleb made his way into the apartment complex and into his room, all he could think about was getting out of the cramping pants and into something more comfortable. Only when he slid out of his boxers did he remember the package from yesterday. Caleb stared wide-eyed on the monster now nesting inbetween his legs. "Holy crackers." was all he could think as his newly acquired dick started to stand at attention.

As blood was rushing towards his groin, Caleb estimated his penis to be about 18 inches long. "I guess it wasn't just bogus after all." he thought as he tried touching the organ, confirming its realness. It was almost as long as his forearm and hand, thicker, at the very least. And the head was as big as his fist in its own right. The unexpected change had left Caleb completely baffled, but his hand instinctively moved towards the twitching organ. He couldn't even wrap his hand around it.

Masturbating with his newly enlarged dick was an unfamiliar, but wonderful experience. But before he could get in the zone, his telephone started ringing. While Caleb considered letting it go to voice mail, he noticed it was Melissa who was trying to get in touch with him, his girlfriend ever since high school. He sighed, and grabbed the phone, lifting it to his ear. "Hi Melissa."
         "Hey Caleb, could you come over and help me bring the new couch now? Pretty please?" Caleb had completely forgot that he had promised to help Melissa getting established in her new apartment, and right now, he was more interested in the massive dick in his right hand.
         "Uhh... Right now?" he probed.
         "Uhh yes right now." Melissa responded, spitting venom. "You promised you'd be available at a moment's notice, and I'm having my girlfriends over tonight." Caleb knew there was no point in challenging her. This was not a fight he wanted to get into, but the pressing matter between his legs would pose a problem if he were to leave now. No way he'd get into his pants without calming it down first, and he would like to savour his first go with it. He sighed in defeat.
         "Sure, I'll be over as fast as possible."
         "Great! Hurry up!" Melissa hung up, leaving Caleb with his still throbbing dick in one hand and the phone in the other.

The dick had to go, somehow, though only temporarily. Caleb was really itching to rub one out, but he did not want to get on Melissa's bad side. One prissy girl in his life was already more than enough. As that thought crossed his mind, he remembered what he had tried to do the night before. His sister really needed to be taught a lesson. Sticking his dick on her for a while would probably take her down a few pegs. And even though Caleb hadn't grown his penis purposefully, it was obvious the note that came with the vial wasn't all lies. And according to the note, he'd be able to swap it back on himself at any time anyway.

Caleb concentrated on transferring his dick to his sister, as he did the night before. All of a sudden he could see the huge organ shrink and recede into his body, until it was completely gone, leaving him smooth down below. "Huh." Caleb though, as he hastily got back into his pants, and quickly left the apartment. As he closed the door behind him, he could hear a bloodcurdling scream from the bathroom. Not that he didn't expect it. Well, Aliya would probably just remember it as a bad dream after he transferred his dick back later anyway. It would be safe with her for now.

***

Aliya was in the shower and hadn't even noticed Caleb come and leave. Halfway through soaping her body up, she had felt an unknown sensation in her groins, and now she was staring dumbfounded down on the glans of her brother's penis, bigger than her fist, and attached to her. She didn't know it was Caleb's, obviously. Not as if that mattered, seeing that there was an erect, 18 inch, unfamiliar appendage attached to her. As the haze of confusion gradually faded from her mind, and she realized what she was looking at, she let out a scream that seemed to echo through the bathroom and her head.

She fell to her knees, completely in shock, the erect dick resting on her chest. She couldn't believe it. She refused to believe it. But the throbbing, and sensation of hot water running over her new penis didn't lie. There was a dick of monstrous proportions right in front of her face, attached to her. With unsteady hands, she lightly stroked her fingers along its length, ending at the base where a new scrotum had appeared. She grabbed one of her new testicles, carefully, it filling her hand and then some. She was afraid to check, but with a gulp, she lifted her sack and felt the area where her vulva would be. And to her surprise, it was still there, nested behind her heavy ball sack. Aliya sighed in relief, but was immediately faced with the same reality, a huge cock painfully erect, begging to be stroked.

"This can't be real." she thought, after collecting herself some. "The hot water must've given me a heat stroke. That's possible, right?" She fumbled with the temperature knob above her head, and felt the water running down her body cool off a bit. Even though she had sensation in her new appendage, she decided it would be best to pull it off. "It's not real. I'll just grab the base and pull it straight off." With both hands firmly gripping the base of the dick, she tugged at it to no avail. An electric sensation ran from her groin, to her spine and through her entire body, and the tugging became more frantic. Then harder, then faster, then rhythmic. Aliya quickly found herself panting, stroking her new cock, her face dangerously close to the glans bobbing in front of her. All other sensation disappeared from her conscious mind as her focus was on the massive dick she was stroking with increasing vigor. It felt as if her very being was drawn into her penis as her excitement grew and the pleasure filled the entire mass of her gargantuan appendage.

"S-something's happening. Building up inside of me!" Aliya thought as she was nearing her first male orgasm, tongue hanging out, panting. And as Aliya felt something burst out from within her, she bucked her hips forward with one last, glorious stroke to the base of her dick. Her balls tightened as she shot what seemed like several ounces of jizz into her mouth and all over her face. With each following spurt, here hips bucked, as her face and upper body was covered by more and more of her own ejaculate.