The moon shone brightly above Sugarcube Corner and the silohette of an owl swept through the clear sky. A single room was lit above the cake store, Pinkie Pie was awake and expecting visitors.
Pinkie Pie emerged from the kitchen, Gummy riding on her back as the party pony sets the beautiful table with paper plates and plastic cups. Pinkie has been busy tonight, Mr and Mrs Cake are away in Canterlott for the weekend leaving her in charge of the store. Peeking out of the window, Pinkie saw her bestest-friend forever, Rainbow Dash, walking up the path.
"Dashieeee! You're here! Come on up!"
"Pinkie shush! Ponies are trying to sleep!" Rainbow Dash hissed but Pinkie had already moved from the window to continue her preperations. Dash stretched her wings and flew her way up to the open window, gracefully slipping through the gap and landing on the soft pink carpet.
"Evening every- hey, where is everypony?" asked Dash.
"Oh they're on their way Dashie! I knew the fastest most bestest pony would be fashionably early! Care for some pinkie-punch?"
Pinkie excitedly trotted into to the kitchen, returning with a plastic cup of raspberry coloured punch. Rainbow Dash took the cup and smiled at her friend.
"Thanks Pinkie! I'm parched.. but wait.. where's Gummy? He hasn't been swimming in it has he?"
Dash pulled a face and sniffed the liquid.
"You silly filly, I only make Gummy-bath punch once a year, Gummy's birthday! If I did it every party it wouldn't be such a special punch!".
Dash sipped the punch and was impressed. It was one of the best she had tasted.
"Tastes great Pinkie! So when's everypony getting here and whats this party for?"
Pinkie ushered Dash onto the couch.
"Just sit your rump down and I'll start the food, the other ponies will be here soon!".
Pinkie returned to the kitchen and opened the utensil drawer - Mr and Mrs Cake had everything a chef could need. Pinkie shouted to her guest, tapping a spoon against the plate over and over making cooking noises but not actually cooking anything.
"How was the cloud-clearing, Dashie? Dashhhieee... helloooo?"
Rainbow Dash was still sat on the couch but her ears were flopped down and her pupils looked dilated.
"Gee Pinkie.. I feel.. kinda weird...".
Pinkie grinned crazily and looked at how much punch Dash had drank from the glass.
"You LOOK kinda weird, silly! I didn't think it would work that fast"
Pinkie took the remaining half-cup of punch from Dash's hooves and placed it on the table.
"Pinkie, I think... I should go home.. maybe I caught a bug...".
"You don't have a bug, you've had some of Pinkie Pie's marvelous medicine! Rohypnol! It makes sleepy ponies! But Doctor Pinkie has something to perk you up, I just needed to knock a bit of the stuffing out of you. You're so biiiig and strrrrong and I can't beat that, so I had to cheat!"
Pinkie made a silly face and flexed her muscles.
"Rawrrr! See, this party is special, you know how you are my BFF? I know I'm not your BFF. You just tolerate me and that makes me oh so sad. So, I'm gonna make me be your bestest friend forever and ever!"
Pinkie skipped back into the kitchen leaving Rainbow groaning, head in her hooves on the couch. She felt dizzy and so tired. The party-loving pony quickly returned holding a syringe and a small glass vial of liquid. Dash groaned again trying to stand up but could find the balance or energy.
"Urgh.. please Pinkie... you're scaring me!"
"Oh don't be a sillyhead! Everypony knows Rainbow Dash is scared of nothing! Anyway, its just a little jab! You see, I figured for me to become your bestest EVER friend in the whole of Equestria, there has to be something I can give you that no other pony can! Thats where this comes into play!"
Pinkie tapped the vial and pushed the syringe needle into the cap, drawing the liquid out.
"Its heroin! Wheeee! A few doses of this and you'll never leave! Especially as I'm the only Pinkie Pie in Ponyville who can get it! C'mon Dashy, lets get you fired up!"
Rainbow moaned and again tried to stand up and flap her wings . She let out a frustrated sob as once again she fell back onto the couch. Pinkie approached, climbing on top of Rainbow, legs and arms pinned down with the heavier pony's weight.
"Please Pinkie... drugs? I don't want them! I want to be a wonderbolt! I want to be your friend but this is weird and creepy!"
Pinkie popped out her tongue in concentration and pushed the syringe into Rainbow's arm.
"Owww! Please Pinkie, no!"
The frightened pony closed her eyes and winced. She didn't feel anything from the drug. Opening one eye, she saw the plunger of the syringe was not yet pressed. Pinkie was astride Rainbow Dash, the parts between her legs pressing against Rainbow's tummy.
Rainbow sobbed as Pinkie began to rhythmically hump her hips against her, panting slightly, hoof against the plunger of the syringe. As Pinkie rocked back and forth the syringe twisted slightly causing Dash to wince in pain, tears dripping from her big purple eyes. Having such a strong pony subdued was really doing it for Pinkie.
"Please Pinkie.. I thought you were my friend... You're hurting me!"
Dash was as upset as much as she was scared, unable to comprehend why a close friend would act in this way. What had she done to deserve this treatment from someone she had shared so much fun with? Dash felt a warm wetness coming from where Pinkie rubbed against her and Pinkie's gasps and humping grew quicker. It felt strange and shameful to Dash, having a friend rubbing her private parts against her tummy. Pinkie leaned forward and moaned into Dash's ear.
"Dashie... I... I don't know if this... might kill you... its a big... dose... if you die.. I'm sooo sorry but I can't stop!"
Pinkie pushed herself hard against Rainbow Dash and went silent for a second, shuddering and then letting out a stiffled groan. She slowly pressed down the plunger of the syringe as she orgasmed. Rainbow Dash sobbed and closed her eyes as Pinkie left a trail of wetness all over her tummy.
Within seconds, a hot feeling manifested where Rainbow had been injected and the sensation of slipping into warm water moved up her arm, into her neck and chest before spreading down to her legs. She let out a little whimper as the drug coursed through her veins, loosening every muscle and causing Dash's eyes to roll back a little.
"Oh no... Dashie?"
Fearing she had overdosed her dear friend, Pinkie tapped her gently on the cheeks looking for a reaction but after a silence which felt like minutes, Rainbow Dash moaned and closed her eyes, whispering something under her breath. Pinkie smiled and pushed her nose against Dash's cheek, planting a delicate kiss before climbing off her friend and kneeling down beside her. Rainbow Dash gasped and drooled a little.
"Oh.. my gosh... this feels.. amazing..."
Pinkie Pie gently pulled the needle out of Rainbow's arm and placed it into a sharps box next to the couch.
"Oh Dashie.. I always knew you were a thrill seeker. Once I've got you hooked we'll be BFF's forever! Let me show you something super first though!"
Still kneeling, Pinkie pulled Dash's legs apart slightly before lifting them over her shoulders. Leaning forward, she took a huge lick of her friends most personal area.
"Don't you worry about anything Dashie! Pinkie Pie has this covered! Nom nom nom!"
Pinkie Pie slurped and licked away between Dash's legs, working both the fur around 'it' and the little pink sticky-out bit that Pinkie herself found so appealing to stimulate. Dash's moans let Pinkie know exactly where her friend enjoyed to be licked most and soon all around the area was now a mix of Pinkie's slobber and the wetness which seemed to be dripping from Dash's part.
With a sudden moan, Dash shuddered and squeezed Pinkie's head between her legs as the party-loving pony tasted something strange from Dashie's place. Pinkie stopped licking and kissed her friend on the tummy, Rainbow Dash closed her eyes and muttered something.
"I'm sorry Pinkie... I pee'd on you... that felt.. awesome.. I'm so tired... "
Pinkie had hoped for a more explosive orgasm from her friend but dosed up on heroin, poor Rainbow Dash was not at her most dynamic.
"Oh Dashie, you are sooo high! Don't worry, Pinkie Pie made space for you in the attic! Once you've had a few more hits of Pinkie's medicine, you won't want to leave!"
Pinkie fetched a glass of water for Rainbow. She'd wake up terribly thirsty once the drug wears off. Pinkie had tried her own medicine a few times but found it to make her too subdued. How can one party hard in that state? Other drugs were Pinkie's interest, she pondered introducing her friend to them at a later date.
For now though the priority was getting Dash dependant, then the fun with her BFF could really begin. Dash was already snoring loudly when Pinkie returned with the glass of water.
"All partied out! Poor Dashie..."
Pinkie placed the glass of water next to Dash and pulled a throw over her, covering her legs and tummy. Pinkie had woke up so cold last time she had tried heroin and wanted Dash's first time to be perfect.
How would Dash feel tomorrow, knowing her friend had sexually assaulted her and forced her to take heroin? Given Dash's reaction to the heroin, Pinkie had a good feeling that all would go as planned and soon she would have the drug-dependant Dashie she'd wanted for so long. The crippling withdrawals would give Pinkie a friend who would do anything for her next hit.
Pinkie picked another two vials of heroin from the cupboard and placed them on the counter along with clean needles, ready for tomorrows dose. There was at least a years supply but Pinkie worried what would happen when it ran out - would she need to have Dash addicted to other drugs too? If she couldn't get more, would she have to just give Dashy one big last dose to send her to sleep forever? If the other ponies found out how she had changed Dash, they'd never come to one of her parties again!
"No!", Pinkie thought, "That would never happen! I'm gonna make sure Dashy never leaves and loves me forever!"
Pinkie picked up Gummy, who had snook out of his tank and was ineffectively chewing on the discarded syringe cap. Turning out the lights, she kissed Dash once more on the cheek and headed to bed. It had been a long night and she would need to be up early tomorrow to give Dash her next dose.