Isaac gets another knock on his door

Isaac had been having a difficult few days. His new balls seemed to produce sperm almost as fast as he could drain them; if he went more than a few hours without cumming they would begin to hurt. Not to mention, he would get an erection that absolutely would not go down until he came. Getting rid of the massive amount of cum was a real challenge. He'd quickly found that the bathtub method actually just clogged the drains, so instead he got boxes of heavy-duty 20 gallon trash bags and used them to contain his enormous ejaculate. He would sneak out early in the morning, when he knew his roommates and most of his neighbors were asleep, to dispose of them triple-bagged in a nearby dumpster. He also taped one around his cock every night to contain the wet dreams that seemed to happen once or twice a night, no matter how much he masturbated.

(aside: a local homeless man had discovered the trash bags and was telling the story of the strange bags of cum to anyone who would listen. Luckily for Isaac, nobody did.)

Even the precum was nontrivial to contain. Every time he got hard, Isaac's penis would leak a steady stream of pre that would quickly put a sticky mess on the floor if left unchecked. Considering his now extra-sensitive member seemed to get hard at the slightest touch, he had to spend much of his time with a trash bag over his dick. His room reeked of cum despite the claimed odor-blocking properties of the trash bags, and unbeknownst to him the smell was also a powerful aphrodisiac.

Even so, Isaac was starting to come to terms with his new appendage. He actually felt physically better than he had in ages, he felt as if he had a ton of energy and a little like he was cooped up. He'd gotten a little taller and more muscular. He could actually walk with his ponderous balls now, and lifting the garbage bags full of cum had gone from a daunting task to a light exercise. And, like it or not, he reasoned, he had to live with this. He couldn't go to a doctor because they'd just poke and prod him like a lab rat, and he doubted this could be explained with medical science anyway. The more he thought about it, the more he thought there was probably no reasonable way of going back to his life of relative shrimp-dickery, and he just had to get used to it.

Still, he was scared to **** of actually leaving his room and going out in the world like this. Wouldn't people see him as some kind of freak? At the very least, his life was definitely dominated by his cock now, and he still wasn't sure how he felt about that. Not to mention he was still terrified of what had happened with Angela.

Isaac was sitting at his desk, watching a movie and eating some yogurt, trying to relax after the nervewracking interaction with Amanda. He'd almost succeeded when someone knocked on his door softly.

"Isaac? Is now a good time to talk?" It was Noel's most soothing voice.

He paused the movie and said, "Ssure, what's up?"

"It's just that, we're all really worried about you. You've barely left your room in four days. We're worried that something might be wrong."

Isaac carefully considered his response. He didn't want to reveal his -- erm -- problem, but he found it very difficult to lie to Noel.

"I've just been feeling... a little out of sorts, lately. Not up to it, you know?" He hoped he didn't sound disingenuous.

"Yeah, I know that feeling," Noel replied ernestly, "but, you know, the best way to get out of a funk like that is to spend some time with friends. Can I open the door?"

"Uh-- no!" Isaac said, a little too hasty, "I mean, uh..."

"Isaac, it's okay, Amanda told us what she saw."

Gears turned silently in Isaac's head for a few seconds. On the other side of the door, Noel hoped she hadn't just fucked it up.

"She saw?" Isaac asked, knowing the answer.

"Yeah, she saw. It's okay. We won't, you know, judge you or anything. We just want to help. We got your favorite pizza."

That's not really what I'm worried about, thought Isaac. But, if they knew, they knew. And, he reasoned, he was going to have to face them at some point anyway.

Still though, he really didn't want them to smell his room. He'd long since gotten used to the constant, thick smell of cum, but he was very aware of how nasty it was.

"...Okay... I'm coming out," he said, and swiftly opened the door, stepped out, and closed it to avoid the stench getting out.

On the other side was Noel. She was wearing a black tank top and black skinny jeans, which was a little unusual but not enough to make him uneasy. She smiled at him warmly, not looking at his crotch at all. "Hiii," she said softly and a little hesitantly. Behind her were Amanda and Cecilia. Amanda was just in a t shirt and basketball shorts, and Cecilia... well... Isaac tried very hard *not* to notice Cecilia's outfit, because he suspected she would be in something revealing. The absolute last thing he wanted right then was an erection.

"H-hi", Isaac replied, cheeks going from ghostly white to red. There was an awkward pause. "Where's the pizza?"

That broke the ice, and the four roommates all enjoyed a delicious pizza together that just happened to be the reader's favorite. It was even the same shop, in fact. Why not? They joked and chatted, and nobody even mentioned his dick, and Isaac felt a little bit of normalcy that had been missing from his life for four days.

After enjoying the pizza, they all moved to the couches to rest & digest. It was in this environment of calm that Noel decided to finally broach the subject of Isaac's appendage, which had been bulging obscenely the entire time.

"So ah, Isaac... how'd you get that?" She said, pointing to the unmissable outline of his soft cock nearly spilling out of his shorts.

Isaac looked flustered, but he could see no point in being evasive. "I honestly have no idea. I don't really remember most of that party, but apparently I got it at some point there."

"Does it, like, work?" asked Cecilia. Isaac involuntarily looked at her body the instant he thought about getting an erection. True to form, she was wearing a low-cut spaghetti strap top, clearly with no bra, and tights that showed off her muscular thighs. Her smile told him that move was definitely calculated. He looked away immediately, but his cock still throbbed, and he was reminded that it had been nearly an hour since he had last came.

"Y-yes" he answered, turning a deep shade of red. "Actually it works a little *too* well."

Amanda laughed heartily. "That's good, isn't it? Most guys your size can barely get it up!"

Isaac continued to look at his feet and his cock throbbed again, getting thicker and longer. "I don't think there's anybody my size."

The girls all stared hungrily at his growing dick now. "...just how big is it when it gets hard, Isaac?" asked Noel with a far-off voice.

"Just over two feet," he said. In a few seconds, his dick hardened to its full power, forcing its way out of the leg of his shorts but thankfully not ripping them. It arched nearly straight up to be level with his chin, covered in wormlike veins that pulsed with his heartbeat. His enormous balls were also visible, resting on the couch and covered in a thick mat of pubic hair. The potent scent of his cum started to fill the air as the mega-cock began leaking pre-cum down its length.

The girls were all now panting, edging closer and closer to the object of their most intense desire.

"Wait wait!!" Isaac put his arms around his cock to ward them all off. In a few more seconds they would have simply descended on him, but for now they waited and listened to what he had to say.

"There's something I have to tell you. At that party, there was this woman the next morning, and she... well she said she'd grown. A lot. Her breasts were huge and leaking milk, and her thighs were thick as hell and her pussy was weirdly big, and she said that it was because she'd drank my cum! Just a mouthful she said! I don't want that to happen to you!"

The girls all looked at him in shock. Then Noel said, "So she became a god damn breeding machine, like you?" and put her hand between her legs. This was uncharacteristic of Noel, or so Isaac thought. In reality she was the biggest pervert of the bunch.

"W- what?" he looked between the faces of the girls, who were now moving with more purpose.

"That's so fucking hot, Isaac. We all want to be your breeder bitches," said Amanda, getting between his legs and rubbing his massive balls. They got visibly fuller with his hot baby batter.

"Jeez, look at this monster cock!" Cecilia said huskily, straddling Isaac's waist and placing the bulbous head of his dick between her sizeable breasts to rub it. His pre-cum quickly soaked her top through and coated her entire front side in hot, slick lube. "I can't wait till this thing fills me full of cum."

Noel continued to masturbate, though she stopped to take off her clothes. Her legs spread wide so Isaac got a good view of her wild black bush and the tiny pink island in the middle of it. "None of us are on birth control Isaac," she said, starting to rub her damp pussy while she watched her friends worship his cock, "So you're going to fuck babies into all of us tonight."

Isaac's head was spinning, partly because of the overwhelming sensations of his roommates pleasuring him with their bodies, partly because of the sheer craziness of what they were saying.

"Wait so, you all want to grow?"

"Yes!" the three girls shouted in unison.