Selfish Symbiosis

The sweet smell of a recently baked cake filled a room; it as ready a cake that took nearly some minutes to make; classic Pinkie Pie things, baking something in about a few minutes even if it should take some more time. Pinkie then got a text from Sunset; the reason... a Sleepover at her place. Pinkie went directly into sleepover mode, grabbing snacks and some movies for the night; she will make sure that in that night no one sleeps... and that is kinda Sunset's or the thing's plan.

Later as soon as the night came in, Pinkie arrived at Sunset's place and rang the door bell. Sunset opened the door as soon as it rang leaving full view of the party girl with a very wide smile on her face. "I'm here, now we can start the thing!"

"You're on time, everyone's upstairs. Come in! Feel like home!" It invited Pinkie with a small smile not showing the sharp teeth. Pinkie came inside and went upstairs to Sunset's bedroom, indeed she found everyone there but Twilight who there was no sight of her anywhere.

"Sunset, where's Twilight?" Pinkie asked

"She's bussy, scientific stuff that she has to do"

"But she could be having fun with us...." Pinkie got a bit sad from it, but recovered quick. "I'll call her over"

"NO!" It screamed, making Pinkie suspect a bit. "Sorry for that scream, we did called her but she insisted on not comming; what she's doing it's really important for her"

"Oh, i see. Ok then; if it's that important then let's have fun! I bringged a lot of snacks" She run where all her friends were and sat alongside them, but she didn't had a clue that none of them were as they used to be. It smiled and showed the sharp teeth to then lick her lips; to not call the attention it joined all of them with the snacks, the movies and the music.

Most of the time were laughs and jokes, some good and some really bad. There was fun, but not all the fun that was intended. A strange aura filled the room, but Pinkie didn't noticed by all her laughs and jokes. "Girls, i think it is time for our especial 'fun' plan. What do you say?" It claimed, all girls nod except Pinkie who didn't knew what that especial fun plan was... until she heard a smooch, Rainbow Dash and Applejack were kissing just right next to her and rubbing their boddies from outside of the clothes.

Another smooch started, Fluttershy and Rarity were doing the same thing as Dash and AJ; Pinkie turned red as she wasn't expecting this to be that kind of Sleepover; she hold her cheeks a bit embarrased of the scene she was involved into. She leaned a bit back and the back of her head hit something squishi and bouncy... Sunset's boobs. "S-sunset...?! You didn't told me about what kind of Sleepover this was"

"Are you disapointed?" It run her hands down on Pinkie's body until reaching her boobs and squishing them.

"N-no... but... you could have... told... m-Ahh" Pinkie moaned after feeling Sunset's hands on her. It pulled her head a bit more so they both could kiss, Pinkie closed her eyes to feel that heavenly made kiss. As soon as she closed her eyes, everyone's clothing started to disappear on red slimy strings and transforming into the slimy bodysuit. Pinkie felt something o her knees and wrists that prevented her from moving, when it stopped kissing her Pinkie saw the truth... everyone covered in a strange slime suit, sharp teeth and inhumanly longe tongues. "W-what is this?!" Pinkie asked.

"Don't worry darling, just submit to it" Rarity said before holding on Pinkie's right leg.

"Yeah, this is something we all love now" Fluttershy hold into the other leg.

"You've got ti feel it Pinkie, it's great" Rainbow Dash kissed PInkie's neck.

"Ya just need to... relax and get warmer" Applejack standed at top of Pinkie and after rubbing a bit her pussy, she started peeing on Pinkie's pijamas; making sure that if she wasn't wet naturally... she would be wet and ready.

"Girls, please... don't be so rude with her" It said, it was crawling on the ceiling and slowly descended in front of Pinkie Pie, Rarity and Fluttershy kept Pinkie's legs spreaded. It created it's fake cock, but now it was even bigger than before, reaching Sunset's cleavage; it walked closer to Pinkie and once it was on it's reach... they ripped her clothes out of her body exposing her pussy. "Now, that's welcoming"

"W-wait... there's no way that would fit at all! Stop please!" Pinkie begged

"We've seen you pulling bigger stuff from your hair... this will be nothing for you; trust us" It pushed it's way inside Pinkie's pussy, not a sound from her mouth but every inch it was going inside... the more Pinkie's body were arching. It kept pushing inside until locking itself inside Pinkie's womb. "Let's get this going" It started to thrust it's hips against Pinkie's crotch slowly to not hurt her.

Pinkie didn't said anything, her mind was blank, just a few tears down her cheeks; it felt painful but for some reason now it was feeling more pleasuring. Meanwhile it was thrusting it's cock, the rest were using her tongues to lick Pinkie's body taking care of the sweat she had; all those licks made her body be covered in saliva making it shine and be slippery. It leaned over and rub it's breasts on Pinkie's body until the nipples were tocuhing each other.

"Kiss us, party girl" It asked opening the mouth and sticking the tongue out. Pinkie gave up and opened her mouth, it kissed her and introduced the tongue as deep as it could inside Pinkie's throat. The thrusts became more aggresive, faster and ready to spread inside of her; so it moved as fast as possible and faked one last final cumshot filling her womb. It pulled out so it could spread on her body, and it did... crawling out of her pussy, covering both her legs, her belly, her arms, breasts and going inside her moth to take control of the brain... once done she let out all the moans she repressed while getting fucked and even squirting hard although the cock was no longer inside of her. "Yes, this is what we wanted... just a bunch of horny women, lusting and craving for more and more pleasure... well then. Let's have the most pleasuring orgy we could ever do"

It claimed, everyone were feeling their bodies getting warmer and warmer; nothing but lust in their thoughts and them just needing pleasure to live and to give their lifes for; they all crawled around the thing and standed with their asses up ready to take everything.

A car stops outside of Sunset's house, and inside is Twilight Sparkle who brings a big backbag and her most serious face ever. She closed the car and standed in front of the house before taking a deep breath. "Ok, show me what you got... you slimy failed experiment" Twilight walked closer and placed a hand on the door and opened it slowly; this has to end...