"Carrie!" Sandra's voice called desperately from the door. "Open up, we...uh...we don't know what to do!" She sounded desperate. Frightened even.
"Give me a second to put on some clothes!" she called back. "It's okay, you just got carried away last night. I know you're not lesbians. Unless you are of course. I don't care either way!" she hoped they'd leave her alone. She really didn't have time for their nonsense.
"It's an emergency!" Meagan whined. "Please?"
"Oh for the love of..." Carrie quickly shrugged into a plain white bra and pulled matching panties up her shapely legs, settling them over her full ass. She really wished she had time to put on more clothes than that, especially after how they'd talked about her the day before, but they kept knocking and begging.
"WHAT?" She shouted as she pulled the door open. The girls jumped to either side of the door frame, peeking out at her. Four dark eyes goggled as Carrie looked at them sternly. Now that they faced her they clammed up? "So, what's the big darn emergency?"
They looked at her, then each other. Meagan stuttered something about side effects. Finally Sandra took a deep breath and stepped out from beside the door. "We'd better just show her," she said. Her body was as gorgeous nude as it had been in her running outfit. Long and slender, with exquisite lines of feminine curves and lean muscle. Her breasts were only a little smaller than Carrie's and sat high and firm on her tanned chest. No wonder Mark had a thing for her!
"What's the prob- OH SHIT!" Carrie said as she finally saw what the fuss was about. Hanging between Sandra's legs was the biggest, thickest cock she'd ever laid eyes on! It sprouted from her shaved abdomen and hung down between her legs, as golden tan as the rest of her. Fine veins laced the silky length, and a dark purple mushroom head capped off the snake-like shaft. A pair of smooth balls, each the size of a fat plumb, hung low in a smooth sac.
"Yeah, not just her, either," Meagan muttered. She wasn't as busty as her friend, but her nipples were very long, protruding like gumdrops from her wide areola. She too had a cock and balls hanging between her muscular thighs. And just like Sandra's, the thing was enormous, though the tip was more red than purple and very blunt.
"When did you get those?" Carrie took a step back, staring from one woman to the other. Surely they hadn't been hiding those in tight shorts and pants all year!
"Last night, I guess?" Sandra said, her eyes growing watery. She was about to cry! Carrie suddenly laughed. Mark thought she was hot did he? Upset that she might be a lesbian? Oh if he could see her now, with a soft cock easily twice the size of his hard on!
"Are you laughing at us?" Meagan asked, hurt. She hid herself behind the door again, and Carrie suddenly felt awful.
"I'm sorry, Meagan, Sandra," she said seriously. "How did this, how did those happen?"
"We got really hungry last night after we, uh, well, after we had sex," Sandra explained. "So we got some burgers, made out some more and fell asleep. When we woke up, well..."
"We had these!" Meagan cried, starting to cry too.
"We're freaks!" Sandra moaned. Carrie's heart went out to them. She stepped close and embraced them both, trying to keep her naked thighs away from their huge swinging cocks.
"I bet you it was that experimental drug!" Carrie realized. How could have it affected them so quickly? She remembered the girls at the sorority and the hungry little woman at the frat house. Were they all waking up like this? Christ there were like a hundred women in that line at Mendorian Hall!
"Oh fuck!" Meagan cried.
"We need to go down there and see if they can...fix it or something!" Sandra wailed, and Carrie nodded at her.
"You'd better get showered and dressed then. I'll go with you, if there's anybody there on a Saturday!" Carrie said, moving off to get dressed. Her roommates seemed to relax as she calmly took charge of the situation.
"Thanks, Carrie, you're the best!" Meagan sighed.
"She really is, isn't she?" Sandra asked, quirking a smile. Her dark eyes flitted to the strawberry blonde's curvy ass as she stooped over her dresser.
"Fuck yeah," Meagan groaned. Carrie frowned at their words as she picked out a blue superhero tee shirt her father had bought her. She turned to tell them to get their asses back to their own rooms, only to be confronted with the pair of them walking towards her.
"What do you want?" she gulped. Between their legs, their massive cocks had started to swell. She'd thought they'd been big before, but as they rose between their legs their shafts pulsed to life, bobbing before them like small arms! Each was well over a foot long, and thicker than her balled fist.
"Dunno, but we can't go out in this state can we?" Meagan shrugged. She took hold of her new appendage and gasped as she started to stroke it. "Oh my God, Sandra, this feels amazing!"
"Oh God, yeah it does!" Sandra echoed as she, too started jacking her own cock. Carrie backed up until her plump ass bumped against her dresser, her green eyes nearly falling out of her head in shock. She remembered the guys with the Asian girl, and with a blush, Mark. All four of those guys' cocks would look like tiny toys next to her roommates'!
"Look, I told you I'm not into girls!" Carrie squealed. Despite herself, she felt her pussy stirring to life in her panties. She should be running away screaming, the sheer size of those cocks was impossible! Ridiculous! Yet it was that very fact that was getting her hot. What would it be like to try one of those things? Size had never mattered to her much. All guys were pretty much the same. Five inches or so, six or seven if you were lucky. Four if you weren't. None of it really made much difference, it was all about how well he touched her, how much time he took making her body tingle from head to toe. The actual act of fucking was just the last act in a long sensual play. Or at least it was if things were done right.
"We weren't into girls either," Meagan agreed, licking her lips. "I bet we could change your mind, if we tried hard enough!"
"I'd still fuck your boyfriend six ways from Sunday if you ever dumped him!" Sandra said with a groan, then blushed at her admission.
"Ha!" Carrie laughed. "He thinks the same thing, but I think you'd scare the crap out of him if he saw you now!" She felt suddenly cruel. The taller woman lowered her head and ran a hand through her short black hair. "I'm sorry," Carried added quickly.
"We can't go out like this," Meagan said and was suddenly standing right in front of Carrie. "I'm not saying you cheat on Mark, but maybe you could help us out...a little?"
"Just a little, please? You can keep your panties on!" Sandra added desperately.
The two athletes towered over her, looking down. They seemed so needy, so hungry. She held off looking at their tremendous cocks for as long as she could. She shifted on her bare feet and finally glanced down. Lust blossomed in the pit of her stomach. God, they looked so fucking tasty! Would they even fit in her mouth?
"All right, I'll help!" she threw up her arms. "But no kissing! And my panties stay on, like Sandra said!"
"Fuckin' A!" Meagan shouted, and offered a high-five to her sporty friend. "You didn't say anything about your bra! Take it off, Carrie!"
"God, I think you two have turned into lesbians!" she said in exasperation. She reached behind her to fumble with the clasp. Her breasts jiggled, and her dark-haired roommates licked their lips in anticipation. At last she worked the little hooks free and the lacy garment fell to the floor. The two women - former women? - were on her in a second. Sandra closed her eyes as she suckled at Carrie's left nipple, while Meagan nibbled at the other, her small with teeth gentle with the long pink nub.
"I just love your tits," Meagan said between licks and bites. Sandra pushed Carrie down on her knees and Megan followed right along with her, still worshiping Carrie's big, firm breasts. Her roommates were turning her on. It wasn't just their cocks, but the kink of having another woman fondling and kissing her filled her with perverse delight.
"Here you go, suck this," Sandra said, slapping her heavy cock on the pretty girl's face. "Pretend it's Marks," she chuckled as she rubbed her huge purple cockhead across her lips.
"Oh my God!" Carrie moaned and started licking the dark, pulsing knob. She could smell Sandra's musk, heady, but strangely feminine too. She reached up with one hand to fondle the woman's balls. They were so heavy and firm! Looking up at the pretty woman's face, she opened her mouth wide. Her jaw creaked audibly as she forced the immense cockhead past her lips and started to suck. She let go of those huge balls, gripping at the base of the shaft. It was far thicker than a can of soda, no way her hand could reach all the way around. And the length! At least fifteen inches, she estimated, almost three times what handsome Mark had to offer! She licked under the shaft as she forced more into her mouth.
"Oh fuck, this feels amazing!" Sandra cried in wonder, awash in alien sensations as her roommate sucked urgently at her brand new sex organ. The words spurred Carrie on, and she started to bob her head, sucking and slurping on less than a third of that cock, but it was all she could manage. She gripped her hand tighter and sucked as hard as she could muster. There was no way she'd ever be able to take something so fat in her throat, but she wanted to do her best!
"Hurry up and make her cum!" Meagan groaned, moving her head from one of Carrie's huge tits to the other, smacking her lips. Carrie nodded and bobbed faster and faster, pulling out all the stops. She'd loved making Mark, and the guys she'd dated before him, cum with her oral technique. She stroked in time with her sucks, twisting both her head and her hand. Few guys could hold out for more than two minutes under that treatment. Sandra lasted twenty!
"Oh YES, here it comes!" Sandra finally gasped just as Carrie's jaw felt like it was going raw. Her cock erupted like a cannon, blasting the back of her throat with enough cum to overflow a shot glass in one mighty burst. Carrie coughed and swallowed desperately, pulling back only to catch a dozen more shots of hot, steaming girly cum on her pretty face, each as big as the first. She shuddered as she lapped it up, cumming silently in her panties, without her throbbing pussy even being touched!
***
It was almost two hours before Carrie finally managed to slip out of her apartment. The two supremely hung girls had taken two turns each stuffing their giant cocks into her mouth. Meagan had tried more than once to force it down her throat, but each time ended only with Carrie gagging and sputtering. True to their word, though, neither made a move to pull off her panties and try to fuck her. A good thing, cocks like that might very well be lethal!
Their sweet, tangy cum and gotten all over her, and she'd been forced to take another shower. Her tongue felt numb, and her jaw still throbbed. Still, she didn't regret it. Letting those two gorgeous women play with her tits and legs while sucking their titanic cocks was easily the most erotic experiences of her young life. She'd cum again just from sucking cock! She had no idea she was capable of such a thing. She'd never seen a cock even half as big as either Sandra's or Megan's though, and she suspected that had a lot to do with it. Neither brunette had wanted to go back to the lab. In fact, after fucking her face repeatedly, they seemed quite content with their new sex organs! Meagan even claimed to love it, swearing she was going to "go cruising for pussy" as soon as she had a shower and nap! They simply didn't care! Well, someone had to look into this!
Back outside, this time in a plain white tee, cutoffs and with sneakers on her delicate feet, she dashed off toward Mendorian Hall. Surely her roommates weren't the only people in the trial to suffer the side effects! Jogging through campus on such a warm sunny day felt good, even if it did make her boobs jiggle a bit painfully!
She skidded to a halt in front of the Bio-science building. The place was deserted. She knew it was Saturday, but she'd expected a mob of angry women lining up, trying to hide shorts and skirts suddenly bulging with great big dicks. She giggled to herself at the thought. When she got to the top of the steps, the big double doors opened up and a young woman stepped out.
"Are you here because of the trial?" the girl asked happily. She wore blue jeans that hugged her slim, boyish body and black tee stretched across her nearly flat chest.
"Sort of, my roommates participated and," she blushed, still tasting a hint of cock on her tongue, despite brushing her teeth. "Well, they've had some rather big changes!"
"Huge changes, even?" the redhead laughed, her blue eyes sparkling. "Yeah I know! I hope they didn't hurt you too much?"
"No, I'm fine," Carrie frowned. "I expected more people here complaining."
"No actual complaints as yet," the girl shook her head. "I'm Melinda, by the way. I work with Doctor Bennet." She fished in her purse and pulled out a card. "Here's our number if you want to reach us. Or your roomates I guess. Any time day or night, okay?"
"Thanks," Melinda nodded as the girl trotted off with a wave. No complaints? She wondered if every woman at Wentford University was a giant pervert. She sighed, at a loss for what to do. She hauled out her phone and texted Amy. What's up? She waited for a while but got no response.
"I wonder if I can find Mark," she sighed. Better that than wandering the campus where there just might be over a hundred horny women running around! Women with dicks that could choke a horse!
Once again she crossed the campus and walked to his frat house. Everything seemed quiet, almost normal. There was no sign of that little Asian girl. No gang bangs apparently in progress. "Thank God!" she sighed as climbed the stairs. There was a big wet stain on the carpet on the landing, and she gave it wide birth. Once on the second floor, she could hear a muffled scream coming from down the hall. She frowned and ran to Mark's room. The door was slightly ajar.
She pushed it open and gasped in horror. Mark was there all right, on all fours on his bed, naked. His powerful, muscular body was taut with strain. His muscles stood out, bulging and pumped. His skin glistened with a thin sheen of sweat. He gripped the pillows tightly, his head hanging low. Behind him, on her knees and rubbing his arching back, was none other than her roommate, Sandra!
The tall woman wore a wicked grin on her beautiful face. Her black hair was slicked back against her head with effort. She seemed extremely proud of herself! Carrie soon found out why. The naked runner slowly pulled away from her boyfriend, revealing inch after inch of her fist-thick shaft as she withdrew it from between Mark's muscular ass!
"What the fuck?" Carrie cried, and the pair whipped their heads around. Sandra looked stricken for a moment, but thrust her cock balls-deep into the crouching man, as if trying to hide it! Mark merely looked at her, his eyes glazed and his tongue lolling over his lips.
"Hey Carrie!" Sandra started.
"You're fucking my boyfriend!" Carrie shouted, slamming the door behind her. Her roomate may be five inches taller and a heck of a lot more fit, but curvy little Carrie was determined to kick her ass right then and there.
"You're right, and his ass is so fucking tight!" Sandra moaned. Her slim hips jerked to and fro, driving her huge girlcock back and forth like a piston. Carrie stopped in her tracks, Mark sure didn't seem to be fighting this! He was a big man, and strong as an ox. He could stop this if he wanted to. He clearly didn't. He moaned again, deep and long. He was enjoying it!
"You know what, you two can keep each other!" Carrie screamed. The bastard hadn't said a word to her, he barely even looked to her. She turned to get the heck out of there.
"Carrie, I'm sorry!" Sandra called after her. Sandra, not her boyfriend. Fucking men! Carrie slammed the door and leaned against it for a moment as she began to sob. How could he? They'd been together for nearly a whole year! She could hear them through the door as they kept at it, despite her dramatic interruption.
"Oh God Sandra, fuck me harder!" Mark begged. There was a slap of flesh, and the pounding of his headboard banging the wall faster and faster. With a yelp, Carried ran down the stairs and out into the warm spring air. She walked aimlessly down the sidewalk, hanging her head as tears streamed down her cheeks. She was such a loser! Even a chick with a dick could steal her boyfriend!
A buzz in her pocket snapped her out of her thoughts, and she slowly pulled out her phone. She had not one, but two texts! She read the older one first.
Sandra went to see Mark. I tried to stop her. Not cool. I'd never do that to you. I'm so sorry. That one was from Meagan. Carrie smiled. In the last two days, she'd learned a lot about her roommates, and not all of it bad. Meagan really did seem to like her and look up to her. Sandra on the other hand... Carrie frowned. Sandra was clearly in love with Mark, and had been for some time. The feeling was obviously mutual too, yet neither had done anything about it. It took a radical drug to get those two together, and that only after Carrie had first cheated on Mark herself by sucking off Sandra not once but twice! She sighed. She just might have to forgive them, and it pissed her off.
Thanks, you're a good friend, Meagan. She replied before checking the older message. I'm at the park reading. Join me? It was from Amy. The curvy college student turned off her phone as she walked down the hill into the park. She found her friend easily enough. The tall blonde leaned against a massive oak tree, a book spread out on her lap. She wore loose, flowing flower print skirt over her long legs, and Carrie realized she was a bit disappointed. Amy had the longest, prettiest legs she'd ever seen, but they were all covered up today. She had a black sleeveless top and sandals with straps around her slim ankles.
"Hey Amy!" Carried called at her. The blonde looked up and smiled warmly. She had elegant features, a narrow nose, a full mouth, and huge dark brown eyes that radiated warmth. Carrie felt a flush of excitement. Christ, was she turning into a lesbian too? Couldn't be, she hadn't even taken the serum!
"Carrie!" Amy closed her book and patted the soft mossy spot beside her. "Have a seat, we've got a lot to talk about!" she said seriously.
"Yeah, is something wrong?" Carrie wondered as she sat next to her friend, leaning her shoulder against the taller girl.
"In a way. Tommy broke up with me," she said flatly. She tried to smile, but her lips were tight and her eyes strained.
"Oh no! How come?" Carrie patted her friend's leg through her skirt, and was surprised when the blonde jerked slightly.
"We're no longer compatible," she frowned. "It's okay. You're kind of right about him, anyway. He's very clever, but not much of a man."
"I'm sorry, Amy!" Carrie said sincerely. "At least we still have each other! Mark and I are over too," she said firmly. "Sandra is fucking him as we speak."
"Jesus, your roommate?" Amy goggled at her.
"The very one, and I didn't tell you about what happened this morning-"
"Wait, you don't have to," Amy interrupted, blushing.
"No, you don't understand, that drug they tested did things to their bodies!" Carrie pushed back in.
"It made them grow giant dicks?" Amy leaned back, arching a pale eyebrow.
"You've heard? But yes! And this morning, I..." Carrie gulped. "I gave blowjobs to Sandra and Meagan both. I don't know why, they were just there and so big and hard..."