Boombox Boogie

This went through a lot of phases before I realized I had too many ideas for this to be a one-shot. I loosely based it on seeing this clip https://www.newgrounds.com/portal/view/787546 running with the idea of a magic boombox that gets into ladies’ heads and turns them into twerking butt-sluts. I ended up varying it in a couple way but key theme remained; magic music that gives them bigger booties, raging libidos, and an unstoppable urge to dance and grind on anyone nearby. I’m not sure how quickly I’ll get back into it but do have a few plans stashed away for this one.

Nick went through the last of the stuff in their attic. He felt like there were a lot of better things he could be doing with his free time as a hormonal teenager, but his mom had insisted that he take care of it today while she was out. It was a crappy way to spend the weekend, lugging boxes and old Christmas decorations down to the ground floor for his mom to sort through. They had just moved into the city a month ago and she had only just convinced him to finish moving the previous owner’s stuff out. Nick was a lanky kid with straight brown hair, but otherwise he didn’t stand out much. He’d rather be walking around downtown or hanging with his few friends he’d made since arriving.

Nick had found a few odd trinkets in the boxes, figuring he could leave mom to figure out what sort of weird stuff the last guy living here was into. There were all sorts of weird antiques and what looked like Harry Potter paraphernalia, plus a few records he had no idea how to play in this day and age, let alone if they were worth anything.

His final check somehow spotted something he’d missed in the corner. It was a box that looked slightly bigger than a laptop, which thankfully meant an easy trip carrying it back downstairs. He unfolded the lid and found some bubble wrap around an old radio and a small necklace on top. It had a crudely carved wooden head looped on a thick chord, giving off an easter island kind of vibe with its bulky features.

“Okay, that’s actually kind of cool-looking,” he admitted. He picked it up, brushing off a bit of dust before he draped it around his neck. It even felt a little warm, something he assumed meant from the box being left in the sunlight of the top floor window. He unwrapped the radio next, lifting out the old-fashioned boombox like he saw on old people shows. The tape deck was loaded with a cassette reading “dance mix.”

“Wow. Does this even work anymore?” he wondered out loud to avoid the awkward quiet of the musty attic. It took some fiddling with the faded colored buttons before it clicked noisily. It even felt like the mere pressing of the button echoed a vibration through his entire body.

“Welcome to the groovy tunes of old, loyal followers,” spoke a smooth, low, and similarly faded voice. It sounded like a cheesy old radio DJ from the 70s recorded off the radio. It made Nick sniff out a laugh and roll his eyes.

“We’re about to hit another hour-long music marathon, so strap in, true believers. We got Bounce It, Booty Queen, Twerk O’clock, and all your favorites to get you shakin’ it along at home or at your favorite disco. So stay tuned and enjoy these mind-melting beats, cuz this one’s for the ladies.”

“Wait. Twerk O’clock?”

Nick furrowed his brow. He wasn’t the most up to date person when it came to music, but he had seen enough memes and youtube videos to know the song had come out less than a year ago. Why would it be on a weird old tape talking about discos like they were still a thing?

The tape went on while he thought it over, blasting its base as the song in question started up. It sounded much louder than he was prepared for, making him flinch as dust was kicked up around the room. The window even blew open, belting the rap music out into the world for what had to be a block away.

“TWERK IT WORK IT ROUND THE CLOCK! SHAKE THAT ASS SO IT NEVER STOPS!”

“God dammit! At least use an actual rhyme!” Nick complained as he cranked the volume knob down to a lower level. He shook his head as Big Thumper’s lyrics kept going at a tolerable volume as he shook the ringing of his ears. The teen frowned as he went to close the window.

“Must have been a custom mod or something,” he grumbled. He felt another pulse of heat run along his neck, and when he looked down the totem head was faintly glowing orange. He picked it up between his finger and studied it, but it didn’t seem to be doing anything beyond that.

“Does it react to sound or something? What the fuck was this guy doing before we got here? Making new kinds of mood rings and stupid retro remixes?”

“OMG! I love this song!” a girly voice shouted from outside. It was especially confusing since he’d turned it down to a level they shouldn’t be able to hear that far out, but Nick ran to the window to investigate.

Out on the sidewalk, he recognized Jill, one of the girls that worked at the grocery store. She was usually a bored-looking older girl with dark black hair and eyeliner and never wearing anything brighter than a band shirt. She was kind of cute in a weird way, and Nick had sort of been hoping his sideways glances would somehow get in the moody girl’s good graces.

First of all, she was smiling. That was new for what he knew of her, especially out in public. She was also bent over and shaking her ass in the air like something between a slutty chick at a club and an animal in heat. Her eyes were wide open as she leaned on her thighs, focusing her balance around her hips so that her thong stayed visible between her tank top and jean shorts. What was more, the thin girl was getting thicker. Her ass not only shook, but it swelled and jiggled until her ass cheeks were too big for her shorts. The pale, thick booty stuck out her leg holes so that her strangely enthusiastic twerking packed more bounce to it by the second.

Nick had no idea what was going on, but he certainly liked it. He leaned out the window, confident that the windowsill would cover up any growing erections he was having.

“Hey, Jill,” he called down to her. “You uh…”

Nick paused to watch a couple of men walk down the road towards the wildly twerking girl. One stayed on his phone, never even looking up as he barely moved to walk around Jill. The other was looking straight ahead and went out of his way to sidestep her frenzied dancing.

“Pardon me,” he barely muttered as he didn’t give her a second glance. Something was definitely going on.

“You uh… actually like this song?” Nick tried again.

“Oh hellll yea!” the gothy clerk called back. “Turn that shit up and come dance with me! I just… I just GOTTA dance, y’know?”

Nick glanced between the stranger parts of his life right now. He stared at Jill for a while, of course, but then looked back to the radio and his glowing necklace. He turned the radio down lower. Jill’s dancing slowed down a bit, but she was still shaking her inflated ass to the beat in her happy trance. His necklace’s glow faded slightly, reacting to the volume as well.

Nick wouldn’t normally say he believed in magic, but this was looking pretty convincing.

“I’ll be right down!” he shouted back.

Not wanting the effect to wear off just yet, he turned the radio back up to a noisy volume and bolted down the stairs with the boombox under his arm. Even out of her line of sight, Jill was still dancing and gyrating her hips by the time he got down to her.

“It’s about time!” the oddly energetic goth exclaimed. “Come on! Dance with me! And crank that shit up!”

Nick wasn’t much of a dancer but he tried to do as she asked. He stepped closer while he tried to step to the beat with the euphorically thick goth.

“Noooo not like that,” Jill groaned. “Just stand there and keep grinding.”

“Grinding on… oh.”

Jill turned around and pushed her ass back hard as the song’s chorus kicked back into its chorus. She moaned as her fat and half-exposed cheeks slapped noisily into his lap, bumping and twerking the bouncy cheeks as fast and hard as she could. Her glassy eyes rolled back as she bit her dark-painted lip, as if her entire ass was an erogenous zone for her. The juicy buns firmly caught Nick’s erection between them and clapped around it, squeezing and massaging it as she jiggled up against him.

“Godddd, yea,” Jill moaned, running her hands down her face and chest in some supernaturally blissful state.

“Fuck, I love this song. Gets me so fuckin’ horny I just need to shake it. Y’know?”

“I’m starting to like it too,” Nick groaned as he lightly rocked/humped to the beat.

Jill certainly didn’t mind his cock grinding on her ass, and even seemed to lean deeper into it when he did. He decided to test his limits as he rested his hands on her lower back, just close enough to trace the edges of her exposed thong. The goth clerk moaned louder as she bounced her growing butt for him.

“Ohhhh, spank it, Nicky,” she pleaded in a husky voice. “Spank that slutty ass!”

Nick didn’t need to be told twice. He slapped a hand into the side of one of her ass cheeks, making them wobble to and fro. The noisy clap made Jill shriek in delight, her eyes rolling back in her head and her tongue rolling out past her lips. She let out a ferally horny sound between a scream and a groan as she ground faster and harder on his cock with her amazingly soft bubbly booty.

“YES! GOD! UGH!” she ranted as her already hazy mind started to decline into monosyllabic pleading. Nick was happy to keep spanking and grinding on her ass, building a warm spot of precum between them. Jill pawed at her face as orgasmic noises escaped her lips.

“Fuck yes! I’m such a dirty fucking slut slave to this beat~!” she raved as if she was just as turned on by the trashy and poorly recorded rap song as she was Nicks spanks and grinds.

“Spank it!” she ordered. “Spank it right when the beat picks up again! I wanna cum to this sick fucking rhythm!”

Nick was too busy thinking with his dick to argue her enchanted aroused music fetish. He ran his hands down her hips, making sure nobody was noticing either of them out on the street before he pulled her pants down. The track had gone into a rapid bass solo as he squeezed her cheeks, teasing her as she bent out and stuck her ass out eagerly awaiting the bass to drop.

When the music cut out for a second just to come blasting back on, he slapped her pale fat ass hard and dug his hands into her skin, jiggling her ass cheek roughly. Jill’s whole body bucked forward as she shrieked like a nymphomaniac, shaking all over as her boot bounced against him like a jackhammer. Her hips tensed and flexed her ass against him as she orgasmed messily, gushing over her thighs and Nick’s pants. The rapid vibration of his crush’s pasty booty nuzzled against his lap until he came through his pants, mixing their juices between them. At least he still wasn’t far from his house when he needed to change.

“UGHHH~! Fuccck yes, MC Daddy Dick~!” Jill rambled. “I just want to shove a speaker up my pussy and crank it up for the rest of my life~!”

Nick cooled down from the orgasm and the strange new power he’d claimed as his own. Watching Jill’s mind melt in front of him made him hesitate and wonder just how powerful this stuff thing was, on top of if it did anything else and if it had any long-term effects. He experimentally turned down the volume, starting to realize the single song was still going this entire time.

As the music lowered, Jill at least started to calm down herself. Her twerking and grinding slowed as her eyes fluttered flirtatiously over her shoulder.

“God… you have such good taste in music,” she purred in a seductive voice he’d never have imagined coming out of the moody clerk.

“When’s the next song coming on? I’d love to dance for you again sometime…”

“Maybe later. I need to mess around with this a little,” Nick offered. “I’ll definitely call you though! This was…”

“Mindblowingly the fucking sexiest thing ever?” Jill moaned as she pulled her pants back up. “Totally. Later, bae.”

---

The goth strutted off on her own as Nick watched her go. She maintained a wide, swaying step to her hips, but he could see the effects slowly starting to fade as she got further away from the lowered music. He stride straightened up and her exposed ass started to slip back into her pants as her fattened up booty returned to normal. Even her seductive step returned to a slouching stroll. He took some comfort in seeing she seemed to shift back to normal and didn’t react to any of her changes.

Nick hurried back up to the attic to do some more experimenting. He sat by the window, messing with the volume and other buttons on the boombox while staying careful not to break it or remove the tape. It clearly had no effect on men, or at most it made them more oblivious to things around them. His new necklace protected him from whatever it was trying to do, so he made sure to keep it on.

He could fast forward or rewind, making it automatically jump to new songs. He jumped between at least fifteen different songs from different eras, all variously sexual and beat heavy. It was mostly rap, disco, and club music, with some odder choices like punk and ska mixed in as well. The funky DJ had a few intros between songs, but it sounded like brief radio chatter at most. There were no batteries or plug, so it seemed to run on its own mysterious energy.

The songs all seemed to do the same; it turned every woman who heard it into a dancing booty slut. The louder and closer, the better it worked. Playing it quietly from a distance just made them bob their head or put a little pep in their step. Turning it up had them stop to shake their goods and add a little junk to their trunk. Blasting it or playing it up close had them hooting and cheering as their asses threatened to burst out of their pants or skirts. A trio of joggers even stopped to bump and grind on each other in their own little rave during its higher volumes. Much like Jill was before, it also seemed to make their asses incredibly sensitive to the touch given how much the women would caress or spank them.

“I’ve got to try this out,” Nick decided. “You know… for science. Or whatever the opposite of science would be, technically.”

He grabbed his enchanted cassette player and turned the volume on low, letting it thump out some dull dance music as he took his show on the road.

Nick lived in a populated part of town, meaning he was able to walk just about anywhere he’d need to go on short notice. Several of his teachers lived in the same neighborhood, so soon her was knocking on the door of Miss Finchly. The uptight music teacher felt like the best candidate for his test for a number of reasons.

The cougar answered her door with a suspicious scowl behind her spectacles. She was somewhere in her 40s with a full figure, which was to say that half the guys in his class obsessed over her tits that were always within a sweater or tight dress shirt. Today was no exception as she stepped out to meet Nick, blocking the door with her thick frame. Even on her day off, she was dressed in a formal skirt and button-up blouse with her hair tied in an aggressively serious bun.

“Ah. Mister Shorely,” she greeted tersely. “Please tell me you haven’t come over expecting extra credit.”

Despite her big bosom, Finchly never was a popular teacher. She was supposedly lighter on the band students, which was to say she wasn’t always pissed off or wary of them.

“Hey, Miss Finchly. I wanted to see if you knew anything about this old tape I found.”

The music teacher sighed noisily and rolled her eyes. “Nicholas, I’m not on the clock. It will have to wait until Monday.”

“But I think you’ll like it a lot,” he insisted as he hit the play button.

“Here’s another groovy tune for all you ladies out there. Sit on back and let the funk take over,” the deep-voiced announcer advised. A funky guitar started to play as Nick recognized the tracks.

“What is this garbage?” Miss Finchly demanded crossly. “I’m not interested in your pop culture trash, Mister Shorely. I have a very ser…ious…”

The busty teacher’s voice trailed off as she stared at the boombox. The guitar picked up as a livelier set of drumbeats joined in. Her permanently uptight body went lax as she started to tap her foot. Smiling at the results, Nick turned it up louder.

“Funk ya ass! Funk up ya ass! Funk funk funk it up!” the chorus started to chant. Miss Finchly’s pursed lips curled into a smile as she started to wiggle her hips and slowly dance in place.

“Funk it up, you say…? Interesting! I thought I wasn’t into disco but… well, it’s no classical, but I know what I like!”

Finchly jutted out her hip hard to one side and Nick saw her ass pump up another couple sizes. Her tight business skirt rode up on her thighs until he could see her practical black underwear peeking out above her stockings. Her ass had blown up enough to smack against the doorframe and threaten to fill it up completely.

“Maybe we can listen to it inside,” Nick offered.

“Hm? Oh! Yes, absolutely! I’ve never heard anything so… compelling before!”

Finchly’s rare smile stayed glued to her face as she shimmied backward. It started as a little chahcha step before she was outright backing her ass up into her living room. Nick shut the door and set the magical music maker on the floor.

“I’m glad you like it, Miss Finchly. I thought you might,” he said as he stepped closer.

The teacher turned away from him and bent over, shaking her fattening ass hard enough at him that it bounced out from under her skirt. She shook it to one side and slapped an ass cheek proudly.

“Oh please. Call me Robin,” she insisted. She hummed in delight and hugged her arms around her chest.

“Good lord, Nicholas. Do you know how long it’s been since I’ve been dancing? Short of ballroom dancing, anyway… it’s just so liberating!”

Robin Finchly clutched a hand around her collar before pulling down on her blouse. The buttons rapidly popped open to exposed her famously huge tits, pressing her dark bra hard with her intense shaking. She shook her head sharply and with a flash of purple behind her, her tied up hair sprang free from its bun into a long, curled mess over her shoulders as she stared at him seductively.

“Tell me, Nicholas. Do you dance?”

“I picked up a few moves recently,” he admitted.

He approached his loosened-up teacher and caressed one of her cheeks. She moaned noisily, making no effort to hide how much she enjoyed him rubbing her ass that was threatening to swallow up her panties. The basic cloth underwear was starting to look more and more like a thong as her juicy cheeks swallowed it up.

“Well I happen to be… mmm… really feeling this beat right now. Why don’t you sit back and lets have ourselves have a little practice? You can help me keep the rhythm.”

“That sounds perfect, Robin,” Nick agreed. He sat down in one of her comfy armchairs and turned the music up a little more.

“But isn’t that skirt kind of a pain to dance in?”

“I couldn’t agree more, Nicholas!”

His teacher pumped her hips to the side again. Her ass inflated another couple inches as it tore right through the fabric of her skirt. She threw it off like she was more of a stripper than his rigid schoolteacher and wiggled her hips, bending over in front of him as she pulled down her panties. Her huge jugs jiggled right in front of him and Nick gladly reached out to grope the hanging udders.

“Mmmm~! Be a dear and help me out of all this mess, won’t you?” Robin purred. “I can’ dance properly in all this, and I simply… mussssst dance.”

She turned around with a needy moan, dropping her thick, naked hips onto his lap. Her already wide behind almost filled up the entire chair he was on, squashing his cock as she bounced and ground like a slutty backup dancer. Seeing that she wouldn’t stop gyrating to the beat anytime soon, Nick hastily squirmed out of his pants before he started running his hands up the plump woman’s sides.

“Oh my. It seems someone else, deeply, truly appreciates good music too,” Robin purred seductively. She planted her ass cheeks on his cock and spiraled it wildly, dragging and bumping his dick between her buns.

“Yea… love it,” Nick moaned breathlessly.

He hurried to unbuckle her bra and slide her shirt over her head and arms. Robin moaned as she shook herself fully free, almost a completely different person with her hair down and clothes off. Not to mention the huge ass crushing and rubbing his bare cock around to distract him.

It was all so much as he got a lapdance from his teacher that he almost missed the flash of purple light. It wasn’t in the room, only catching off her glasses as she glanced fondly back at him. There were her glassy eyes behind them, but a small shape seemed to move through the lens itself. A ghostly but feminine figure slithered through it topped with a bright red afro. He thought he caught a glimpse of a wink, and then it was gone. And he had much more immediate concerns.

“Yes yes yessss. Perfect. Just to the beat,” Robin cried out more passionately. He found himself unconsciously groping and pinching her ass, slapping it just to feel it jiggle in his lap.

“Fuck me with that music… give me that rhythm stick, as it were. Dear god, that bass! Those drums! The keyboard! It’s… it’s sheer ecstasy~! I can’t take it anymore!”

Robin whipped herself around, her huge tits and wide ass wobbling to a stop as she faced Nick. She mounted his lap, thick thighs straddling his. He was shocked to feel how soaking wet she was as her spongy bush and pussy met his cock. She stared at him with wide and wild eyes, almost mad with the mind-warping and libido-breaking music.

“Mister Shorely… Nicholas. I have loved music all my life but nothing has touched me so… deeply as this song.”

She paused to moan between words, rubbing one of her breasts while masturbating with the other hand. She was out of control and Nick was loving seeing it.

“I’ve loved music but it never loved me back like this. I need you… I need to dance with you right now!”

She grabbed her student by the back of his head and pulled him to his feet with her. His face fell right into her bosom. Her fat tits swallowed up his face as she gripped his hands next. Nick made no objection, kissing and sucking her famous tits as she moved a hand to her hip and held his other up higher.

“Just… like this… follow my lead,” she urged.

Nick heard a peculiar click as the tape abruptly shifted gears. It played what sounded like a bass-heavy remix on some classical music, the kind that Finchly would lecture them about in class. Biting her lip with anticipation, the music teacher pressed her heavy hips into Nick’s cock. She shuddered violently, making her jugs jiggle around his face as she took a moment to catch her breath.

“Just like before… to the rhythm,” she muttered softly, even romantically. As if some part of her had been waiting for this forever.

“As dancers, we are all slaves to the rhythm. Are we not, Mister Shorely?”

“Sure,” he mumbled between her boobs. He popped one of her nipples into his mouth, willing to let her run with this. A part of him noticed the tape changing to suit her tastes at the last minute, but it was still working perfectly.

In long and slow strokes, Robin slow-danced with Nick while she fucked him. She led him in a simple, sweeping dance as her thick hips dragged achingly arousing thrusts back and forth on his cock between steps. Nick could barely stay on his feet with all the pleasure he was going through, squeezing her ass for balance as she almost held him up with her guiding girth and grip. He felt a dribble of something wet on his cheek, looking up to see her drooling with her mouth open and eyes closed in her dancing euphoria.

“This… ohhhhh, Nicholas. I’m in heaven. Why did you never play this for me sooner?” she moaned mindlessly.

Robin’s hips slapped into his again, harder and more aggressively to the tune of the remixed ballroom music. He started to hump in time with the stronger notes of the song, which always made her flinch and moan without missing a beat. Her thick thighs ground around his cock when it wasn’t inside her, shifting with the music until she tilted his chin up to face her. When was thrust into her, her tight and wet pussy would gratefully slurp him up into her warm wet folds. She slowly opened her eyes as if waking from a dream, or just truly starting to experience it.

“Now comes my favorite part of the song,” she whispered to him.

She kissed him deeply and tipped him over backward. Nick moaned into her mouth as her big body pressed down on him as he was dipped and held hanging in her arms. Her tongue and tits and pussy pressed into him so heavily that he had to shudder as the song hit a long and dramatic note. He bucked his hips, cumming inside his teacher as she held him close. Her eyes shut for the kiss before opening and rolling back, her mouth hanging open and drooling into his as her hefty hips humped back. Her fat ass cheeks clapped from the motion of her cumming all over him, squirting messily across his lap as their mixed cum sprayed down his legs.

“Uhh… UHHHHGH!” she gurgled out mindlessly. Nick felt himself drop from her hands before she hastily recovered and caught him before he hit the floor.

“Holy shit! Fuck, I’m sorry!” the woman he’d never even imagined swearing at someone blurted out. She smiled wearily as she held him tightly, pressing him against her soft body and kissing Nick firmly.

“All my years of music and dancing and… you are the one person to truly show me how wonderous it can be.”

“Yea… I seem to have that kind of effect on people lately,” Nick answered breathlessly.

Robin chuckled softly and stroked a hand through his hair. She seemed high on arousal as the music seemed to flood her brain and forced her to enjoy herself.

“Well you have excellent taste, Nicholas. Both in music and in women.”

She planted a few more drunkenly passionate kisses, running her hands over his chest and back before she reluctantly eased him back out of her.

“If you would ever like another dancing lesson, do not hesitate to come by anytime. Especially if you bring that… beautiful music with you.”

She seemed to drool over the very sound of it as the song changed back to a harsher rap song.

“I will,” Nick nodded as he started to find his clothes. Robin was simply bobbing her head to the beat now, humming along and swaying her hips in a lazy dance.

“But I think I need to show some more people this music for now.”

“Absolutely!” she gushed, making a sway of her hand like a conductor.

“Music is to be shared, my dear Nicholas~! The rest of the world deserves to hear its beauty.”