Alice wasn’t really overweight – but she was chubbier than she’d like to be.
She couldn’t seem to lose the extra weight. She had no discipline for dieting, and found it hard to work up the desire to exercise.
Her friend Paul came to the rescue. He was an experimental chemist, and from time to time he’d hooked Alice up with some very interesting recreational pharmaceuticals.
“Try this,” he said one day, as she complained about her hips. “I think it will help.”
“What is it?” she asked.
“A new weight loss pill we’re working on,” he said. “It speeds up your natural rate of weight loss – but it also has another benefit. It makes exercise fun.”
“What do you mean?” she said.
“Well, you produce endorphins when you exercise, right?” said Paul. “Which makes it feel good – but not really good enough to balance out the pain and exhaustion. This pill reacts to those endorphins, and other chemicals that you produce during exercise like lactic acid, and it just… amps it up a little. So you’ll *want* to exercise.”
He gave her a whole bottle of the pills, and she promised to try them.
She took the first one the next day, and went jogging. She was embarrassed by her body, so she wore track pants and a baggy sweater.
She hadn’t gone far – maybe a couple of blocks – before she began to feel an unusual tingle in her groin.
Was she… getting aroused by jogging? She blushed. This must be what Paul was talking about. But it was just supposed to make endorphins. Had he known that it would make her sexually aroused? Surely not.
She kept jogging – and her pussy kept getting wetter. She felt her nipples hardening, and she began to make little moaning noises as she ran.
The idea crossed her mind that she could detour into a quiet park, and find somewhere private to rub her pussy…
But that was gross and disgusting. She kept jogging, completing her lap around her suburb, and by the time she got home the crotch of her track pants was soaking wet – not with sweat, but with pussy juices.
She went inside, stripped nude, fell on her bed – and masturbated to a satisfying orgasm.
And Paul was right. The memory of that orgasm stayed with her, and the next day she *did* want to jog. She went a little further that day, and teased her pussy a little more, and when she got home and masturbated, the orgasm was even better.
It became a routine for her – take her pill, go jogging, get home, rub her cunt until she began to buck and writhe with waves of pleasure.
At the end of the week, she examined herself in a mirror – and was shocked at the results.
She looked visibly slimmer! Not a huge amount, but she could tell the difference. Honestly, it looked sexy. In fact, she had lost enough that her tits looked bigger by comparison.
But when she got on the scales, she was confused. The scales said that she had only lost a tiny amount of weight.
The fat was being converted to muscle, she guessed. She would look better, but not lose weight, as such. Not just yet. She had to keep exercising.
She rang Paul to tell him about the success.
“That’s amazing!” he said. “You’re doing so well. I saw you jogging past my house yesterday – you looked so happy!”
She had been happy – because she had been able to feel her cunt juices trickling down her inner thigh, as she had fantasised about being fucked by not one, but two, well-hung billionaires. She blushed, knowing that Paul had seen her in that moment, even if he had no way of telling from the outside.
“You know,” Paul told her, “those pills also react to vitamin D. That’s the one you get from exposure to sunlight. You should try wearing something on your runs that lets your skin get a little tan.”
The thought of an even *more* intense experience intrigued Alice, so she went out to a sportswear shop to buy leggings and a lycra exercise bra. This turned out to be more difficult than she expected, as none of the bras in her usual size seemed to fit.
“Do you use a different sizing scheme here?” she asked the clerk, but the clerk shook her head.
As Alice stared at herself topless in the change-room mirror, she came to a somewhat unnerving conclusion. Her tits didn’t just look bigger because she had lost weight – they actually *were* bigger.
The body could go through strange changes when you exercised. And besides, Alice had always felt her tits were a little smaller than she would like. The change was welcome.
She bought an exercise bra in a D-cup, instead of her normal C, and left the store.
She tried it out that afternoon, and discovered that Paul was right. It felt pleasurable to have sun or her skin. No – it felt *erotic*. She was so wet as she jogged that she could hardly think straight. Her mind was full of thoughts of sucking cock, spreading her pussy for men, and even getting reamed in the ass. When she got home, she didn’t even have to masturbate – she just slapped her pussy three times, hard, with the flat of her hand, and orgasmed from the intense sensation of pain.
Jogging became her favourite part of the day – and at the end of a week, when she looked at herself in a mirror, she looked even hotter.
And her tits were bigger. They had been comfy in her new D-cup bra before – but now they were straining against it.
Paul came over to see her, and he brought a large jug of liquid.
“It’s a protein shake,” he told her. “You can’t just burn fat with no consequences. You need to have some of this every morning to give your muscles something to build on.”
“What’s in it?” she asked, suspiciously.
Paul just tapped his nose, and she immediately knew not to ask. More wonder-drugs from his work, that he probably shouldn’t be sharing with her.
She poured herself a glass and drank it. It tasted foul.
But it was supposed to, she supposed. After all, it was a protein shake.
“Paul,” she asked. “Is this pill supposed to… cause growth?”
“You mean in your breasts?” he asked.
She immediately crossed her arms over her chest.
Paul laughed. “It would be impossible not to notice, Alice,” he said. “You’ve really gone up a size. And yes, it is supposed to do that. One of the ways it helps get rid of the unwanted fat is that it moves it into your tits.”
“Will they… keep growing?” she asked.
“A little bit,” said Paul. “But drinking your protein shake will help.”
Alice, foolishly, assumed that he meant “help them to not grow too much”.
She thought about asking him about the sexual arousal, but it was just too embarrassing, so she didn’t.
All the next week, she drank the protein shake. It always tasted gross, but oddly, Alice came to like it. She felt good after she drank her shake – a different kind of good to the exercise, but pleasurable all the same.
And all week, she jogged.
She was jogging longer each day, teasing her cunt more, and it was becoming unbearable. On Wednesday she went to a sex shop, and bought herself a couple of insertable vibrators, a vibrating clit clamp, and a vibrating butt plug. Over the next week, she tried them out while jogging.
It felt weird – and unbelievably slutty – to jog with a vibrator up her cunt, or with a painful clamp on her clitoris, or with a metal toy lodged in her ass. But she found by using any of these toys – or a couple in combination – she could actually orgasm *while* jogging, squirting into her panties and shaking with pleasure for a few seconds before jogging on. On a good run she could cum two or three times before she got home.
She got so used to this feeling that she began to leave the butt plug or the vibrator inside her went she went to work. It felt even sluttier to walk around the office with her ass plugged, but it felt good too.
She might not have made that choice several weeks ago, but she was actually finding that she was thinking differently now. It was like some part of her brain was always aroused – always horny – no matter what she was doing. The sexual fantasies that she had while jogging would enter her mind at other times. It made it hard to focus on other things, and Alice was experiencing particular difficulty with things that required complex thinking or deep reasoning.
At the end of the week she went back to the sportswear store and bought a new bra – an E cup, this time – and a pair of tight booty shorts to replace her leggings. If she showed more skin while jogging, she would experience more pleasure.
She did. It felt amazing. She wondered what it would be like to jog naked.
By the end of the week she was an F cup.
And then the day came that she ran out of pills.
She went to Paul’s house to ask for more.
“Well, gee, Alice, I’d like to give you more, but they’re pretty tightly controlled by my company,” said Paul. “Haven’t you had enough?”
The thought of not having the pills – of not having her incredible slutty orgasms every morning – drove Alice wild with panic.
“No!” she gasped. “I need more. Please!”
“You can’t afford to lose any more weight, Alice,” he told her. “You’re pretty much perfect now. I wouldn’t want you to become unhealthily thin. If I was to give you more, you’d have to drink twice as much protein shake, so you keep your weight level. Can you do that?”
“Yes,” said Alice. “But I need more protein shake too.”
“Do you want to know what’s in the shake, Alice?” he asked her.
She paused, and then nodded.
“It’s my cum,” he told her. “My semen. And other men from my office. And it’s mixed up with some special drugs that make you stupider, and more suggestible, and which cancel out your birth control. You’re probably very fertile right now.”
She gaped at him. She had been drinking… cum? And drugs that made her stupid?
“What?” she gasped. “Why?”
“Because it’s funny,” said Paul. “And because we needed to test these drugs. You look much sexier now than you did when we started – almost a proper bimbo. Have you been enjoying your slutty little runs? I saw you orgasm as you went past my house yesterday. And the shape of that butt plug is very obvious now that you’re wearing those tight shorts.”
She flushed with humiliation and shame.
“Here’s what’s going to happen, Alice,” he told her. “You’re going to let me fuck you, and cum in your unprotected, fertile cunt. And then I’ll give you enough shake and pills for a week. And next week you’ll come back and fuck me again. You see, we have some new pills designed to increase milk production in pregnant women, and we’d like to test those too. And you’re going to do it, because you’re a slut and you’re addicted to acting like a slut.”
Alice felt miserable, and humiliated. But she also felt excited.
A real cock, inside her? That would be better than a dildo. And sure, he might knock her up, but the possibility of that seemed remote next to the possibility of being fucked.
“Can I go for a jog first?” she asked. “To get wet?”
“Sure,” said Paul. “But only if you take your tits out and leave them out until you get back. And no vibes or plugs.”
It was humiliating – but the thought of letting the sun hit all of her titflesh made her squirm with anticipation, so she did as she was told.
It hurt, to jog with her tits unsupported, having her new F-cups bounce up and down against her chest. But the pain was good, sort of. And lots of people saw her, including her neighbours, and some of her co-workers, and that was incredibly humiliating. But the humiliation was good, too.
She thought of fucking Paul – of being Paul’s helpless fucktoy – of being impregnated by Paul.
And by the time she got back, Paul barely had to fuck her. No sooner had he stripped off her shorts, bent her over his dining table, and pushed his cock into her pussy, than she orgasmed – hard. And then again. And then three more times before Paul finally ejaculated into her unprotected womb.
He suggested to her that she go jogging again afterwards, completely nude, with his cum trickling down her inner thigh, and then implied that he wouldn’t give her the pills if she didn’t. But he let her wear the vibrating butt plug.
It felt so good – and she came so many times – that Alice knew she would be jogging in the nude every day from then on, no matter who saw her.
Two week after that, her tits were a G-cup.
And a week after that, she fell pregnant.
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Alice's weight loss pills are helping her lose weight from her stomach - but the more she takes them, the bigger her tits get...
