Warning: this story contains material of a sexually explicit nature. If you are too young to view pornographic materials in your country or are offended by such things, please turn away now. 

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	Katy wondered if she could surreptitiously adjust the crotch of her leggings without anyone noticing. She didn't want to get caught groping herself in public. Not for the first time was she questioning her decision to choose stretchiness over bagginess. She resisted the urge to look down at the swelling that she could feel.
	'Won't this line ever end?' she thought to herself. She was in line at Target, and as usual, there was one checker to help a line of approximately 30 people. 
	She felt her panties shift as they made room for her package. At least her oversized hoodie would hide the bulge. 
	For now. 
	As the line moved forward agonizingly slowly, she tried not to think about the obscene mound getting gradually larger behind her hoodie and within her leggings. She held her basket of groceries in front of her to try to hide it, but she only got more stimulated when the basket rubbed up against her, so she abandoned the idea. 
	'How do guys hide these?' she wondered for probably the hundredth time. There was something she could do to hide it, but it would probably draw even more attention if she did it here, so she didn't. 
	The line moved on and she shuffled forward, the mound approaching softball sized. If it got much larger, she wouldn't be able to hide it behind her hoodie. 
	By the time she made it to the check out her bulge was as big as TWO softballs stuffed down the front of her leggings. Fortunately, the checker was chatting to the bagger and she was able to get her groceries and waddle out to her car. 
	Then she realized that she'd forgotten where she'd parked.
	Fifteen minutes of searching later and she realized she'd parked on the other end of the mall. She could feel the bulge bouncing against her thighs as she turned around and waddled in the other direction. Her bulge was the size of a volleyball now. Between two parked cars she tried to shift it up higher, hoping she could look to the casual observer that she was just pregnant. 
	Unfortunately, adjusting her package made her more excited and the swelling increased. 
	"Damn that witch," she said, for probably the thousandth time. 
	She wished she could walk faster, but walking too quickly made her package jostle and bounce, which not only attracted attention, but made her more aroused and caused the swelling to accelerate. 
	She finally got back to her car and tossed her groceries in the trunk before getting into the back seat because there was no room for her to get in the front without being pinched by the steering wheel. 
	She looked around her to make sure no one was nearby. She pulled up her sweatshirt and looked at her package, now resembling two volleyballs stuffed into her extremely stretchy leggings. 
	She pulled down her leggings next. This wasn't necessary, but she hadn't seen them this big yet. 
	There on her lap, lay her testicles, each full with probably a gallon of cum. Most girls didn't have testicles, certainly not ones this big. 


She hadn't always had them. 
	Yesterday, Katy and her wife Clarissa had been at this very mall and happened upon a wandering shop. They'd heard rumors of the wandering shops, of course. You could get your wildest dreams in them, or get what you thought you wanted, which turned out to be your biggest nightmare. 
	They knew it was a wandering shop, of course. The oaken door didn't match the glass doors of the mall, it hadn't been there yesterday, the shopkeeper knew them by name, yadda, yadda, yadda. 
	"How can I help you?" she asked (though Katy suspected she already knew).
	Finding a wandering shop was one of those things people liked to talk about, like what you would do if you won the lottery, or found a genie with three wishes, or had your pick of super powers. So, Katy knew what she wanted, and she knew what her wife wanted. She looked at her wife and then back at the shopkeeper. 
	"My wife and I want to have a baby," she said, "but we don't want to adopt, and we don't want a sperm donor. We want a baby from both of us."
	The shopkeeper nodded at this. "A very common desire," she said. She looked between them. "Which one of you would want to bear the child?"
	"I would," said Clarissa. "Katy earns the living, so I should be the housewife." 
	"Are you sure?" Katy asked her.
	"I'm sure," said Clarissa and kissed her.
	"Very good," said the shopkeeper. She started rummaging through chests on the counter behind her. "I think I have just the thing, ah here!" She turned around, brandishing a small vial about the size of a shot glass. "This should do the trick." She handed the vial to Katy. 
	Katy took the vial hesitantly. "What will it do?" she asked. 
	"It will make you able to get Clarissa pregnant, like you asked."
	Katy eyed the vial. "How much is it?" 
	"You can pay what you think is fair, after you see the effect," the woman replied. "Go ahead and drink it." 
	Katy looked at her wife and drank the potion. For a moment she thought nothing would happen, but then she suddenly felt a pinching in her crotch. She reached for it and felt something she had never felt before.
	"You may as well take a look," said the shopkeeper. "You can use that for privacy." She pointed to an old-fashioned folding privacy screen.
	Katy and Clarissa stepped behind it and Katy zipped open her jeans with shaking hands. She shook a bit to get the tight pants down off her hips and pulled her panties down to reveal her brand-new penis and testicles. 
	Clarissa covered her mouth with her hands. "Omigosh, is that real?" she asked.
	Katy gulped. "I, uh, I don't know. I'm afraid to touch it. Would you mind?"
	Clarissa nodded her head and reached forward and poked it. At her touch it retracted and Clarissa and Katy both yelped. 
	"It's real," said Katy in a daze. "I have a dick and balls." 
	"It's kind of small, isn't it?" asked Clarissa.
	"Well, they get bigger, don't they?"
	"Right," said Clarisa. She looked back up at Katy's face. "Katy, you can get me pregnant now." 
	"Not right now, if you please," called the shopkeeper. "Please wait until you are in your own home." 
	Both women blushed. Katy pulled up her pants, being careful not to catch the zipper on her new package, and they came out from behind the divider. Katy pulled a $100 bill out of her wallet and placed it on the counter. "I hope this is enough," she said. 
	"It will do," said the shopkeeper. "I hope you are satisfied with your purchase."
	They thanked the shopkeeper and were on their way out the door, when Katy paused. She turned around.
	"Yes?" said the shopkeeper.
	"Um, can you do something else for us?" Katy asked.
	The shopkeeper raised her eyebrows. "What might that be." 
	"Well, we love children. I mean, a lot," Katy began. "We want to have a lot of them. And I want to be sure, you know, that I can get her pregnant right away, and that she'll have a safe pregnancy. Can you do that?"
	Clarissa nodded in agreement.
	"Let me get this straight, you can now get her pregnant, you haven't even tried yet, and you want me to make the both of you more fertile, and make her body more receptive to having children?"
	"Um, yes. Is it possible?"
	"It's possible, but I wouldn't recommend it. You're capable of getting her pregnant, like you wanted. Do you need anything else?"
	"Please?" begged Clarissa. "We really want this."
	The shopkeeper sighed. "Fine." She turned around and rummaged through the chests again. She turned around holding two vials. "This one," which she handed to Katy, "will make you more virile. You will make a lot more sperm. And this one, "which she handed to Clarissa, "will make you much more receptive to the sperm, and will ensure that carrying and delivering your babies will have no negative effects on your health. I recommend you wait until you are home and unclothed before taking these."
	They took the vials gratefully and promptly left the shop. After they left, Katy realized that she didn't pay for the new vials, but when she turned around, the door was gone. 
	They walked back to the car, Katy having to adjust her stride to accommodate her new package compressed by her tight jeans. 
	They went home and undressed. They both had similar builds, slim with B-cup breasts, except that Katy now had a penis and testicles. 
	They drank the potions, excited for Katy to finally impregnate Clarissa. They wondered if there would be any visible changes, since their wish was to become "more fertile."
	"I think something's happening!" exclaimed Clarissa. Her hands rushed to her chest, which was swelling in her hands. She watched excitedly as her breasts swelled from B-cup, to C-cup, then D-cup. 
	"Apparently being more fertile means having bigger boobs," Katy remarked. Seeing her wife's breasts swell in front of her was getting her aroused.  
	Clarissa looked up at her with a gleam in her eye. "Probably so I can make more milk for all the babies we're going to have," she replied. 
	Katy's crotch felt weird, and she looked down to realize that she was growing erect at the sight of her wife swelling up. She looked back up to see her wife starting to panic.
	Clarissa's breasts were passing the size of softballs and weren't stopping. "Katy, they're not stopping." 
	Katy didn't know what to say. "I can see that," she said, "how do they feel?"
	"They feel, umph, really good, actually. I think I'm getting more sensitive! Do you feel any different?"
	Katy felt her body. "Other than this boner, I feel the same as when we left the shop." Her penis had stopped at 6 inches, which she understood was a normal length, but it felt tight, like if she didn't do something with it, it was going to explode.
	Clarissa's breasts were still growing. And now, Katy could see something else. "Clarissa," she cried, "your hips!"
	Clarissa felt down at her hips. They were indeed growing wider. "This feels weird," she said, "my hip bones themselves are getting wider!"
	"It'll probably make it easier to pass a baby through them." 
	Clarissa nodded. She started to rub her legs together. "Katy?" 
	"Yeah?"
	"I'm really horny. Like, really horny." 
	Katy gestured down at herself. "Yeah, so am I." 
	Clarissa practically pounced on her. As their lips connected, Katy could feel her wife's orbs between them. They were so soft, but her nipples were stiff. Clarissa was going wild. 
	"Take me, Katy, fill me up!"
	Katy threw Clarissa down on the bed and got between her legs. They'd been in this position when frotting before, but this was going to be new. She felt Clarissa's pussy, which was gooey and practically gushing natural lubricant. She tried to just push herself forward and into her wife, but then realized that she was going to have to direct things manually. She reached down and touched her dick for the first time and guided it into Clarissa's snatch. 
	Clarissa howled in orgasm and Katy could feel her spasming beneath her. She'd never come like this before. Was it the presence of the penis, or had becoming more fertile made her more sensitive? Katy tried moving back and forth and eventually found a pumping motion that worked. 
	Clarissa's eyes rolled back in her head, but she grabbed her breasts and gasped "my tits! Play with my tits!" Katy didn't need to be told twice. She grabbed the now soccer ball-sized orbs and squeezed. Clarissa moaned again. Katy would have marveled at the way her hands disappeared into the soft masses, but she was distracted by what was going on down below. 
	She'd never felt anything like it before. It was less sensitive than her clit had been before, but it felt like there was a pressure building up that she had to work to. All too quickly she felt herself explode and her dick started to pump semen into her wife. She fell on top of Clarissa and had the presence of mind to roll to her side before blacking out. 

	Katy woke up less than an hour later to another erection. 'Does it count as morning wood,' she wondered silently, 'if it's not in the morning?' She let her hand wander down to it and took her time exploring it. She'd never felt one before. It felt so weird to her, and even weirder that she could feel her self touching herself. She reached lower, looking for her testicles, but where she expected to feel two balls, she felt a longer flap of skin. She followed it and found herself touching a very large lump that could also feel her hand. She looked down and gasped, because beneath her new cock was the largest scrotum she'd ever seen holding testicles the size of softballs. 
	She got up on her knees and looked in dismay at her testicles, swollen beyond belief. She cupped them and lifted them. They were hot and heavy. She let them down. Her penis wasn't any larger, but based on the pressure she felt, she guessed it was begging for relief. 
	"Clarissa," she gasped, "wake up!"
	"Huh? What?" Clarissa murmured. She shifted but didn't move much. "Katie, can you get off of me?"
	"I'm not on you, sweetie." 
	"Then why do I feel so heavy?" Clarissa heaved herself to a sitting position. 
	Katy gaped in horror at what had happened to her wife. Her breasts had grown to the size of basketballs, but hung heavy like natural breasts and sat in her lap. Her areola were the size of dinner plates and her nipples stuck out an inch long.
	Her lap itself was huge, as her hips were now twice as wide as her shoulders. Her ass stuck out almost a foot behind her, and each cheek was the also the size of a basketball. 
	"What happened to us?" asked Clarissa. "What happened to you?" she asked, seeing Katy's balls. 
	"I don't know," Katy answered. 
	Clarissa sniffed. "I just wanted to be fertile, I didn't want to look like a fertility idol."
	Katy snorted. 
	"I can barely move," Clarissa continued, "I weigh a ton, and I look like a freak." 
	"You don't look like a freak, Clarissa," Katy said, "You've just got big boobs. Look at me, I've got a dick and the largest balls in the world." 
	"Yeah," said Clarissa, looking at Katy's balls. "They're so big," she said thoughtfully.
	"Are you," Katy began, "are you leering at my balls?"
	Clarissa closed her mouth. "I mean, they're just so BIG! You could totally knock me up with them!" She looked at where Katy was staring. "Do you think I'm sexy?"
	"I always think you're beautiful," Katy was quick to reply.
	"Yeah, I know, because you love me blah blah blah, but," she reached forward and grabbed her nipples which were almost to her knees. "Do you think I'm sexy like this? I think you're looking at me like I'm looking at your balls."
	Katy hesitated. "Well, I mean, you know I like big tits." 
	"I know, but these aren't big, these are ginormous. Do you still think they're sexy? Tell me the truth." 
	Katy took a deep breath. "Yes, I think you're the sexiest thing I've ever seen. I want to pump you up with my cum and make you full to bursting with my babies." 
	Clarissa squeezed her nipples and moaned. "Oh god, that's hot! It's so messed up but it's so hot! Take me! Pump me up!"
	Katy didn't need any further goading. She rushed forward and kissed Clarissa. Then she ducked down and started sucking on one of her nipples. Clarissa squealed. She pushed Clarissa onto her back, positioned her dick at her pussy, and started pounding. She didn't know how she knew to do this, but it just felt natural. Clarissa's ass held her up high and Katy's balls slapped against it as Katy pounded away. Soon enough, Katy felt herself explode. This time her cock kept pumping cum for over a minute. 
	When she finished, she pulled out of her wife and fell back in a daze. When she recovered enough, she realized two things: her balls had reduced to their normal size, and Clarissa's stomach had a slight mound where it had been filled with cum. 
	"What are we going to do, Clarissa?"
	"I don't know. Can you help me get up?"
	Katy got on her knees and grabbed Clarissa's hands. She heaved and managed to pull her into a sitting position. As before, her breasts rested in her lap. She grabbed Clarissa's legs and pivoted her to the edge of the bed. Then she got off the bed, grabbed Clarissa's hands again, and heaved. "Ugh," she grunted, "you need to help, too."
	"I'm trying," Clarissa whined, "but I weigh a ton!"
	"You're telling me!" 
	Katy braced a foot against the bed and heaved on her wife. Slowly Clarissa was able to stand up until she was wobbling on her feet. 
	"How are you doing?" Katy asked.
	"My butt is keeping me balanced, but my back is straining."
	"Can you make it to the bathroom? We need to see how much bigger you are."
	"I'll try." She started putting one foot in front of the other, but was clumsy not just because of her increased weight, but because her pelvis was several inches wider than it used to be, throwing her gait off. When she got to the bathroom door she didn't know how to proceed, because her ass was two inches too wide on both sides! She had to shuffle in sideways, leaning back and pulling her tits up to get them past the doorway. 
	Before standing on the scale, Clarissa made her way to the toilet. "Help me down? I need to get some more of this cum out of me." Katy grabbed her hands and helped her as she lowered herself to the seat. When she was seated, her ass hung down the sides almost to the floor. She sat there for a few minutes dripping. Katy helped her wipe some of the cum off her. 
	Finally, Katy helped her stand back up and Clarissa stood on the scale. "What does it say?" she asked, since she couldn't see past her boobs.
	Katy hesitated. "Um, it's, um, you weigh 374 pounds." 
	Clarissa's jaw dropped and she looked at her wife in unbelief. "374 pounds? I was 115 this morning, that means I gained, um..."
	"259 pounds," Katy finished for her. 
	"That's more than twice my weight! I weigh more than three times as much as I did this morning! What am I going to do, Katy? I don't have anything that fits! I can't even stand up by myself." She began to sob. 
	Katy hugged her wife and held her close. "Hey, hey, we're going to get through this. Look, I'll go to the mall and see if I can find that store again. See if I can get her to fix this for us."
	"She won't be there," Clarissa sobbed, "you saw it, the door disappeared." 
	"At least I can try. And I can buy you something to wear. Look, we're going to get through this, okay?"
	They hugged for a while longer. Finally, Katy helped Clarissa back into the bedroom. On the way, she noticed the way her wife's breasts smacked into each other, and the way her booty shook as she walked. Against her will, she found herself growing hard again. She felt something else, her balls slapping against her thighs. She looked down and found that her balls had grown to the size of tennis balls. "Again?!" she cried.
	Cassandra looked at her. "Oh, weren't those smaller a minute ago?"
	"Yeah, they keep swelling."
	"Guess you're making more sperm so you can knock me up, eh?"
	Katy groaned. "Yeah, that must be it. Great. You can't get up on your own, and I'm cursed to constantly need to cum."
	To prepare for her trip to the mall, Katy and Cassandra had sex one more time so Katy could empty her balls. Then she wore her stretchiest leggings and an oversized sweatshirt to hide her bulge. 

	By the time she made it to the mall, her balls were already the size of tennis balls again. She went to the place where the wandering shop had been before. As expected, the antique oaken door was nowhere to be seen. Disappointed, she turned around to head towards Target to buy Cassandra some clothes that might fit her. 
	To her surprise, when she turned around, she saw a door that wasn't there yesterday. This one looked old, like the one in the wandering shop the day before, but was a darker wood, like mahogany. 
	She entered the door and found an older man with a kind smile behind a counter. "Hello, Katy," he said, "how can I help you?"
	Katy was confused, but breathed a sigh of relief. "Um, this is going to sound weird, but I need some help with some magic I bought at another one of these shops."
	He cocked an eyebrow. "Indeed?"
	Katy explained what had happened to her and her wife. When she was done, the man looked thoughtful. 
	"You say you forgot to pay on your way out?"
	"Yeah, do you think that made the magic go wonky?"
	"It's possible. Some mages are very proud and don't like being insulted. It's also possible that she thought you were pushing her too hard. Either or both of those may have caused her to want to 'teach you a lesson,' as it were. Or maybe the magic was just finnicky." 
	"So what can we do? Can you help us?"
	The man looked at the ceiling in thought. He pursed his lips and clicked his tongue a few times. Finally, he said, "I think I can help you. Please wait a minute." 
	The man got out some vials of powders and a few dried leaves. He ground up a mixture in a mortar. Then he poured the powder into a small plastic bag. 
	"Your wife's problem is that she's been given weight gain without muscle and bone increase to compensate. Mix this with hot water and have her drink it. In a week or so she should be able to walk around like she did before."
	Katy took the bag gratefully. "Thank you," she said. "What do I owe you for this?"
	He put his hands up. "I don't charge for good deeds." 
	"Oh, um, thank you."
	"Now, for your problem..." he looked through a variety of jewelry on a shelf behind him. He selected a choker with a violet gemstone on the front.  "Put this on."
	She obediently put the choker around her neck and clasped it. 
	"Now, unfortunately, the fertility magic on you can't be removed without risk of harm to you, but it can be channeled. Just as your wife is a repository of feminine fertility, you are a font of male fertility now. As you can tell, it is building up in your testicles. Imagine it filtering through the gem and into the rest of your body."
	Katy closed her eyes and focused on her balls, which were now the size of softballs. She could feel them shrink, and at the same time she felt her hips widen and her breasts grow larger. When she opened her eyes, her breasts were now the size of softballs and her ass had grown to match. "That's amazing, but how come I gained more mass than I lost?"
	"The male virility is more compact in you. You will grow more than you shrink by the use of that gem, but at least you will look more normal. I should warn you, you had your eyes closed while you changed, so you didn't see how brightly it flashed. I would recommend activating it where no one can see you. To reverse the process, you simply have to imagine the fertility filtering the other way, or just take the choker off." 
	"Will I need some of that tea as well when I get too big?"
	"Don't worry, with my magic you'll grow stronger as you grow."
	There wasn't much more to say, so she thanked him again and went out into the mall. When she turned around the door was gone.

	She went to Target and found some clothes she thought might fit Clarissa until they could get her out to a store and she could try things on. By the time she had finished she had grown larger than softballs again, so she went to the bathroom to shrink. Like the old man said, there was a bright violet flash as her body changed. Now her breasts were the size of volleyballs and her ass had grown to match. Like he promised, she was able to carry herself, the jiggling of mass was just cumbersome and got in the way when she wasn't paying attention. 
	With her balls shrunk to a modest size, she got in line to pay.
	And stood in the longest retail line she had ever stood in.

	That brings us back to the beginning of this story. 
	Katy was in her car with breasts and balls the size of volleyballs. She activated the choker and watched as her balls shrank, and her breasts expanded to the size of basketballs. She was now as big as Clarissa!
	She got into the front seat, aware of her breasts rubbing against the steering wheel as she drove. They were also sensitive and the rubbing made her excited. She was soon erect, and stayed stiff the entire drive home. The excitement also made her balls swell faster, and they were the size of softballs when she pulled into her driveway. 
	She carried her bags into the house, aware of how much her breasts wobbled against each other. 'Clarissa is going to have a hell of a time when she's able to walk,' she thought. 
	She went into the bedroom where Clarissa was still on the bed. 
	"Katy, what happened to you!" Clarissa exclaimed. 
	Katy explained to Clarissa what happened, then left to prepare the tea. By the time she had prepared it and Clarissa had drank it, her balls were approaching the size of volleyballs again. Clarissa looked at them hungrily. 
	"So, if you take off that choker, all your 'fertility' will go back to your balls?"
	"That's what the man said," Katy said. 
	"Well, I think you're getting backed up, and we need to empty all your 'fertility buildup.'"
	"Are you sure?"
	Clarissa licked her lips. "Positive."
	"Okay," Katy replied. She took off the choker and immediately felt the power shifting from her boobs and butt and flow into her balls. She became her normal slim self, but her balls expanded to larger than basketballs! They bounced around her knees. 
	Clarissa had a horny grin on her face. She leaned back and spread her legs. Katy tried to climb on the bed, but her balls caught at the edge. She backed up, reached down and tried to pick them up. She settled for grabbing her scrotum and hoisted her balls up onto the bed. She clambered up onto the bed and dragged her balls towards her wife. 
	When she reached Clarissa's pussy, she found that the hight of her balls about matched how much Clarissa's pelvis was held off the bed by her ass cheeks. She guided herself into Clarissa's pussy and began thrusting. It was becoming more natural to her. 
	Clarissa moaned and began to convulse in orgasm. 'At least with this blessing/curse she's easier to get off,' Katy mused. She leaned forward and grabbed Clarissa's nipples. She worked them in between her fingers as she thrusted. Clarissa screamed. Katy hoped the neighbors didn't hear that. 
	Clarissa didn't last long and soon was shooting off into her wife. This time she came for over five minutes. Somehow, the cum wasn't coming back out, but Clarissa was able to stretch to hold it all. Katy saw her wife's stomach swell before her eyes. Before Katy was done, Clarissa's womb was so full of cum that she looked nine months pregnant. 
	Katy sat back on her feet. "Well," she gasped, "at least it feels really good."
	"Yeah," Clarissa whimpered. She reached over her boobs and felt at her swollen belly. "Can you help me sit up?"
	Katy helped her up. Her belly sloshed forward and rested in her lap. Her breasts fell to either side of it. Clarissa rubbed her belly. 
	"Do you think I'll look like this when I'm pregnant?"
	Katy sat next to Clarissa and leaned against her. "I think you'll look amazing."

	Twelve months later, Katy was hammering into Clarissa's pussy, like she did several times every day. Clarissa had apparently gotten pregnant right after Katy had grown a dick and it seemed like she started to grow immediately. A couple of months later, their first ultrasound revealed why: Clarissa was pregnant with twelve babies! She continued to grow rapidly, looking full-term pregnant when she was only four months along. Fortunately, whatever tea the old man had given her had helped her stay mobile even now.
	With her legs barely spread, her belly rested on the floor, with her on top of it. Her breasts had grown even larger, and now each of them extended three feet down the sides of her belly. Her ass was now four feet wide. Her babies were three months overdue, but the doctors assured her that her hips were wide enough to fit her babies, even though they were now nearly twice the size of a normal newborn. They also reasoned if she was able to stretch big enough to fit them all, her vagina could stretch enough in birth to fit them. 
	Katy was sporting more muscle now. The increased testosterone made it easier for her to put on muscle mass, and she had recently learned how to channel her male fertility from her testicles to her muscles. 
	After a few more minutes of pounding, she came and collapsed on her wife. 

	The old man in the shop put away his crystal ball. The two women he'd checked up on were happy and would be content. Within a week, Clarissa would have an easy birth to twelve healthy babies. They would be especially healthy since they had longer to incubate. 
	He thought he knew who had given them their first potions, and thought about paying her a visit. But that was for another time. For now, he was satisfied with his work. 

The End.

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Author's note:

Thanks for reading! This was supposed to be a short scene about Katy swelling in the Target and some other stores before returning to cumflate her wife, but then I started writing and I spent more time on the backstory. 

If you liked it, tell me what you liked about it on overflowingbra.com.
If you didn't like it, tell me what needs fixing on overflowingbra.com.
