One night Riley was sitting on her bed naked in her room as her father Cory stood in front of Riley with a bath robe on as he said, "Okay Riley. For your thirteenth birthday, as your present: we're gonna give you a sweet party you'll never forget." Riley then said, "What kind of party?" Cory then took off his bath robe showing he was completely naked. The suddenly the door to Riley's room opened and walking in also naked were Topanga, Auggie, Maya, Farkle, Lucas, Smackle, Zay, and Katy. A smiling Cory then said, "A sex party." Riley's eye lit up in happiness as she made a big smile.
Lucas then got into Riley's bed and lay down on his back. Riley then laid down on top of Lucas with her back and butt going down on him. Lucas' hard penis then went into Riley's butt causing Riley to moan loudly. Then Auggie sat on top of Riley and pushed his small penis into Riley's vagina. Riley moaned even louder as she felt her little brother's penis push deep into her womanhood. Cory meanwhile got on his knees hovering his body right over Riley and Lucas's heads. Cory then brought his penis to Riley's mouth and pushed it inside. Riley giggle for a moment and then began to such hard on her father's hard penis. Farkle and Zay meanwhile got on both sides of Riley and brought their penises close to the sides of Riley's ears. Riley feeling them moved both of her hands up and grabbed Farkle's penis with her right hand, and Zay's penis with her left hand. Riley then began to rub her hand up and down each boy's penis, moving slow at first, but then began to squeeze them tight as she moved her hands up and down very fast.
Maya and Smackle meanwhile squeezed their heads between Auggie and Cory's bodies and moved their faces to Riley's underage breasts. Maya and Smackle then both began to lick Riley's breasts with their tongues. Eventually Smackle began to flick Riley's left nipple with her tongue back and forth, while Maya began to gently bite on Riley's right nipple with her teeth. Topanga and Katy meanwhile were on the edge of the bed and each of them grabbed one of Riley's feet. Both grown woman then each brought Riley's biggest toes to their vaginas and then... pushed them inside. Each woman moaned as they felt their vaginas be pleasured by Riley's smooth toes. Katy moved Riley's toe side to side, while Topanga gently pumped her daughter's toe back and forth inside her.
Everyone began to quicken the pace of what they were doing and tried to time their own climax to happen at the same moment. And then... it happened. Katy and Topanga orgasmed on Riley's feet. Maya and Smackle got wet due to excitement. Farkle and Zay each shot their loads onto the sides of Riley's head. Cory orgasmed in Riley's mouth, Lucas shot his man fluids into Riley's butt, and Auggie orgasmed and shot his semen into Riley's vagina. Everyone suddenly looked exhausted except Riley who said, "Hey. We're not done here."
Soon everyone changed positions. Cory was sitting in a chair now as Riley sat in her father's lap and her dad's large penis push deep into underage vagina. Riley moaned as she felt her father's penis go deeper and deeper into her. Farkle meanwhile got behind Riley and pushed his penis into her butt. This made Riley moan loudly. Then Maya and Smackle came to Riley's sides and then Riley reach out and pushed her two pointers fingers into Maya and Smackle's vaginas. The two girls moaned as they each felt Riley move her finger back and forth, up and down, and side to side which greatly pleasured them. Lucas meanwhile got on his knees behind Smackle and began to lick her butt, while Auggie got behind Maya and began to the same to her butt. Topanga meanwhile got next to Smackle and began to lick her breasts, while Katy got next to Maya and began to lick her daughter's breasts.
Eventually positions were changed again. Zay laid on the side of the bed as Riley laid on top of Zay with her back to her. Zay positioned his penis so it began to push itself into Riley's vagina. However then Lucas standing next to the edge of the bed began to push his penis inside of Riley and suddenly... both Lucas and Zay's penises were actually squeezing into Riley's vagina at the same time. Riley moaned loudly as she felt her vagina be stretched like never before as she felt the two boy's penises rub both against each other and her vaginal walls. Meanwhile Maya got on her knees over Riley's face and brought her vagina to Riley's mouth. Then Riley pushed her tongue into Maya's vagina and began to lick the inside of her best friend's womanhood. Auggie meanwhile squeezed behind Maya and then pushed his little penis into Maya's butt causing Maya to moan loudly too. Then Topanga got on her feet and spread her legs out so she was standing over everybody and had her vagina move close to Auggie's face. Auggie then stuck his tongue and began to push into his mother's vagina and began to pleasure her with it. Katy then stood over everyone too and brought her vagina towards Lucas' face. Lucas began to stick his tongue into Katy's vagina and pleased it causing Katy to moan. Then Katy and Topanga looked at each other, each made a sexy smile, and then began to kiss each other. Smackle meanwhile got behind Lucas and began to lick his butt which caused Lucas to moan.
Eventually everyone changed positions again. Farkle laid on the bed as Riley sat on top of him and began to ride him in the cowgirl style. Riley while sitting up, pushed Farkle's penis into her vagina and then began to move her body up and down on it. Smackle sat on Farkle's stomach facing Riley and began to kiss and lick Riley's nipples again. Maya then sat behind Smackle and brought her vagina to Farkle's face. Farkle then eagerly began to lick Maya's womanhood causing Maya to moan. Maya then had her hands reached behind Smackle and she began to squeeze Smackle's breasts and even pinched her nipples. Lucas then got behind Maya and began to push his penis into Maya's butt which made Maya moan even louder. Zay then got behind Lucas and pushed his penis into Lucas' butt which then made Lucas moan. Cory meanwhile got behind Riley and began to push his penis into Rilley's butt. This made Riley moan louder than anyone. Topanga meanwhile stood over Zay and directed him to lick her vagina. Katy meanwhile stood over Cory and proceeded him to lick her vagina. Both women began to moan loudly as their felt their respective womanhoods get pleasured.
Eventually as everyone began to switch positions again Riley seemed sad. A concerned Cory said, "What's wrong honey?" Riley then said, "Nothing. It's just... I wish more of our friends and family we here." Cory then said, "Well it turns out I had to reserve players ready in case you felt this way. COME IN GUYS!" The door to the room opened and then a naked Josh, Shawn, and Ava walked in. An excited Riley then said, "YAY!" A naked Josh smiled and then laid on the edge of the bed. Riley laid on top of Josh with her back to him, and then Josh began to slowly push his penis into his niece's underage vagina. But then Shawn came to the edge of the bed and pushed his penis into Riley's vagina too. Everyone moaned especially Riley as she felt Josh's penis and Shawn's very large penis push very deep into her underage vagina and stretched it a lot too. Ava meanwhile sat over Riley's face, and then Riley stuck her tongue out and began to pleasure the little girl's small and young vagina. Ava then facing Shawn motioned for him to move his face forward. Then Shawn and Ava began to kiss a bit.
Meanwhile Cory behind Ava and then pushed his penis deep into the little girl's butt hole. Ava broke her kiss with Shawn to moan loudly. Then Lucas and Farkle sat on opposite sides of Ava and moved their mouths to Ava's little bright pink nipples and began to suck on them. Auggie then squeezed between them and stood up and brought his penis towards Ava's mouth. A smiling Ava then grabbed Auggie's penis and shoved it into her mouth. Auggie then moaned as he felt Ava began to suck hard on his little member. Then Topanga stood over Shawn and motioned his eyes towards her vagina. A smiling Shawn then moved his face forward and then began to lick Topanga's wet vagina. Katy meanwhile got behind Shawn and began to lick his butt, while Smackle meanwhile got behind Katy and began to lick her butt. Zay meanwhile then surprised Smackle by getting behind her and pushed his penis into her butt. Nearly everyone began to moan for awhile and then... everyone orgasmed at the same time. Zay shot his load into Smackle's butt. All of the women began to get very wet. Josh and Shawn each shot tons of semen into Riley's young body. Lucas and Farkle orgasmed out of excitement. Auggie shot his wet warm load into Ava's mouth. Riley's face got wet from Ava's orgasm. and Ava smiled as she felt Cory orgasm in her butt. Eventually everyone laid on the floor together as a smiling Riley said, "Best. Birthday. EVER!"
THE END