Mia loved Halloween. Not only was she a horror fan, but she loved a chance to show off her sexy side. Being on the petite end of the body spectrum, she found she needed to put in the work to be seen as sexual in a positive way. There were always older creeps who got off on smaller proportions, but that just made her sick.
This year, Mia would be dressed as a witch, with a garment so short that she was stretching the truth when she called it a dress. With just a few days before Halloween, she shopped around for accessories for her costume downtown with her best friend Savannah. It was fun just to hang out, and witch accessories just seemed fun to own. In a nice walkable strip of shops, she saw an actual witchcraft store and lit up. She dragged Savannah by the hand and she ran as fast as she could.
Inside was cute, but pretty cheesy. The air was thick with a distinct incense smell. Shelves lined with tarot cards, bundles of herbs, and cheap crystals flanked Mia on all sides. A very pretty and friendly cashier greeted the two friends cheerfully, which reaffirmed Mia's decision to shop there.
Now browsing, she'd already tossed a few knickknacks and curios into a tote when something caught her eye. A book, with its spine turned away from view sat in the back of a shelf of crystal balls, which in some cases were just snow globes. It was bound in some kind of soft pink leather and hand-crafted like in ages long forgotten. There was nothing else like it in the store. She pulled it out to inspect it, finding a cover labeled with strange symbols. Above the symbols, in different, and newer ink, it read EROTINOMICON.
She opened it up and gasped with delight. It was perfect. It was exactly what she expected from a sexy parody of the Necronomicon. More writing in gibberish language, ritual circles with cheeky details to them, and lots of illustrations of monster dicks. Mia was completely sold. She needed it.
"How much for this?" Mia asked, approaching the cashier.
The cashier's expression just slightly developed from neutrality to an amused smirk. "Are you sure you want that? It may be more than you can handle."
Mia giggled at the theatrics, and confirmed, "I think I can handle it."
"Don't say I didn't warn you. Free of charge."
Mia was incredulous, and asked, "What the fuck? Is this a Mogwai store? Will it cost my soul?"
"Nothing so pedestrian," she assured Mia. "I just want it to go to someone who will appreciate it. The price is that you make a legitimate attempt to use it, and then come back here and tell me your thoughts on it. Deal?"
Mia reluctantly accepted, her curiosity getting the better of her.
...
That evening when Mia got home, she pulled the book out of its tote and looked it over. There'd been a persistent tingle teasing her ever since she'd found it. By now she was horny, and something needed to be done about it. Normally she'd ignore everything else until she'd had some time with her vibrator and some porn, but her focus remained on the 'erotinomicon.' The art she'd peeked at earlier excited her, and something awakened in her.
She opened it up to the first page, which held nothing but those gibberish symbols, in hot pink ink. On the second, she found that along with the gibberish, she found notes written in English, these in black ink. One read, "highly recommend the perfect fit incantation first to avoid injury." Below a pronunciation guide was written in the same black ink. Mia remembered her promise to the cashier, shrugged, and gave it a shot.
She said the incantation with a giggle at how silly she was being. For a split second her blood ran cold when she felt a small buzz between her legs, followed by an escalation in her wetness. She laughed at herself for being gullible and wrote it off as a placebo effect. She figured there was no harm in looking further.
An early page had a drawing of a fat monstrous dick, not dissimilar to the big monster dildos she'd been curious about online. This one reminded her a lot of one she'd seen, actually. She'd always wanted to try one with this design, sometimes dubbed Flint. It was human-like, but with angular and dramatic ribs and ridges along the sides. Its proportions emphasized girth, but she couldn't determine the length from the drawing.
She knew magic wasn't real, but despite herself, she had a mix of excitement and fear. For whatever reason, she said the incantation sounded out below the drawing. The ritual circle inscribed around the illustration seemed to come to life, moving as she spoke, seeming even to glow. When the last syllable left her lips, a mass erupted from within the circle, springing forth from --impossibly enough-- a portal. It was the monstrous dick, in the flesh, balls included.
Mia's jaw dropped and she froze like that for a good thirty seconds. "What the fuck," she finally muttered when she gathered the energy to move. She poked at it to make sure it was real, and it bounced back firmly. This thing was huge, around a foot long and thicker than a man's fist. It was also rock hard and had a tightly pulled foreskin stuck halfway down the head. It twitched and throbbed, almost inviting her to sit on it.
Mia was too tempted. She dropped her shorts and rubbed up and down between her eager lips adorned with dark hair. She was wetter than she could ever remember being before. She thought of the first incantation and hoped it meant what she thought it did. The only way to find out was to try.
She stood over the book and its titanic pop-up, then squatted to sit on the dick. The head pushed against her, and feeling the size made her wary. When she put a little bit of weight on it, though, her lips parted wider than ever before, and simply accepted the object. A moan escaped on its own as she was spread so open, and her legs became weak. She fell to a seat all at once and was filled completely with the massive cock.
The spell had worked! Her interior magically stretched further than what was physically possible to accommodate the demonic toy she'd summoned. It felt amazing. She worried no man would ever be worth fucking after this. There was no turning back, though, so she planted her feet down and began to ride. Rising, the friction threatened to pull her inside out, but she kept it together. After coming to a squat at the head, she lowered down again, this time bringing the tight foreskin with her, peeling it all the way back, and making the dick throb.
There was a strange sensation in her clit. The dick gave off some kind of psychic aura, through which she felt extra tingles to indicate what it felt in some small way. When she repeated her rise and fall, she felt that the dick liked it, and it added to her own pleasure. She increased in speed, but it was quite a workout, especially while she was filled with such intense ecstasy. She needed breaks a few times, during which she sat and enjoyed the unnatural fullness.
The size would be one thing to a normal woman, but Mia was barely over five feet tall and skinny to boot. This thing felt like it would puncture a lung, and she even saw her stomach bulge with every plunge. She giggled, thinking to herself that she'd given herself the power of hentai physics. She didn't know how long she rode the giant cock, but when she was sure she could take no more, the was filled with warmth as she felt it gush pump after pump of thick cum into her. Once the dick was satisfied, she felt it retreat back into its portal and disappear.
She was left laid out on the floor, leaking an absurd amount of cum into it from her tender gape. A new feeling was bubbling through her, centered on the spot above her clit. Following an instinct, she focused on that spot and pushed a strange new energy through it. A small ritual circle glowed over her mons, and the same dick she'd just ridden was conjured onto it.
She gasped. She'd just grown a massive demon dick, as well as balls the size of peaches. She felt around on it with her hands and gasped again when she felt what it did. It was so sensitive, like her clit, but its own unique feeling. Her mind raced, and she turned to the book for answers. She flipped around, and found on one of the early pages she'd skimmed past, was written, "Satisfy them to gain their forms and powers, and shift through those you gain at your discretion."
She really didn't know how to feel about any of this. She wanted a way to reverse this. She tried engaging the same action she'd done to grow the dick, to see if she could pull it back in. No luck. Then it occurred to her that if satisfying it gave her the option to grow it, maybe satisfying it again could let her dismiss it. It was worth a try.
