Her hips began moving of their own volition, her pussy hungrily trying to get more of Fey's dick inside her womb, her insides dragging and pulling at the shaft. Her hips rocked back and forth, each motion inching herself lower, leveraging gravity to get more and more inside of herself. By this point Fey's dick was more or less pointed upward with Vivi atop it. The fox girl reached out her paws and grabbed at Fey's lower horse legs which were raised up in the air to either side of her. With a determined look in her eye she drove herself downward the last few inches until her labia came to rest on Fey's medial ring. The touch of it pushed the fox girl over the edge.
"AAIIEEEEEEEE!"
Her legs went up in the air, her toes splayed out rigid, her clit throbbed and Fey's barrel was sprayed down with her juices. She kicked at the air as her entire body rested on Fey's medial ring, her arms holding her in place, the bulge in her belly pressing up against the underside of her breasts.
She thrashed there for a moment and then her lower lips stretched thin and squeezed around the thick medial ring and she dropped down another six inches. Her breasts were knocked aside, squeezing around the bulge.
Her insides convulsed as the medial ring scraped up her pussy walls, sending lightning up her spine.
"Aah-AAh-AAIIiIIEEEEEEE!"
Skllrtch-skllrrtch-skllrrtch!
Her pussy went wild, rippling up and down the massive intruder, trying to contain it but doing nothing but barely holding it together.
"M-MORE! Mmmhooaaahh!"
She got her legs underneath her, her knees wobbling like leaves in the wind, and tried to push up, straining, using all her warrior's strength just to overcome her climax weakened body. Slowly, she began to rise, her pussy being dragged along behind unwilling to let the dominating cock inside it go, her stretched paper thin lips deforming over every vein and bulge. She managed to pull herself up until the medial ring, the ring pulled her puss downward but she could not force it out. Her thighs wobbled like jelly and then her strength failed and she dropped back down six inches as they collapsed.
"Mmmh-hhnnyaaahhh!!!!-"I-I'm I'm too weeak!" she whined.
The vulpine looked down at the bulge in her belly that pushed her breasts apart and swallowed. She moved her paws from Fey's legs and grasped at her breasts, her paws squishing into them. She licked her lips then pushed her breasts up against the bulge, squeezing then roughly mauling her breasts up then down over the tip, more and more frantically. Her hips rolled, trying to get more Fey's dick inside, but to no avail.
"Hhee c-cum in me Fey p-please! I need to be filled!"
"I c-can't yet! It's not enough!"
The centaur's hips bucked up into the air as Vivi's hips rocked but it was no good.
"I need you to move Vivi!"
The fox girl bit her lip hard but nodded. She got her legs underneath her, her knees twitching and shaking, and managed to get some leverage. With immense will she lifted her body up, her puss letting go reluctantly, the stomach bulge slipping down from between her boobs. She heaved herself up until the girth of Fey's medial ring was visible, a slight ridge above her mons, and then she set her legs and heaved. Her puss bulged downward but then with a lurch and a schl-pop! the medial ring slipped free, her lips wetly slopping around it.
She gasped, her eyes going wide, a string of drool connecting her lips.
She almost lost it, her legs failing. She had to grit her teeth even as orgasm ripped through her, setting her body ablaze, but she didn't stop. Her shaking wobbling legs pushed her higher, the bulge in her belly rapidly disappearing until only the head was visible, a small distension above her mons. Her legs were fully straightened and she was standing on her tiptoes yet some of Fey's dick was still inside of her.
She wasn't sure how long she could hold herself up despite locking her knees, her legs trembled as she looked down at the beast below her.
Then she caught a flash of purple out of the corner of her eye.
She turned her head, a sense of danger running up her back. They were there. The purple balls! Her eyes widened as a dozen equally sized rubber purple balls rolled up onto the couch and piled up on top of Fey's testicles.
"W-wha? N-no!"
The purple balls climbed on top of each other forming a tower. The tower rose and grew up and up until it was a rubber mirror to the horse cock aimed straight at the vulpine's buttocks. The fox girl whimpered and tried to move her hips out of the way but the tower seemed to lean and follow. Her legs trembled desperately trying to keep her up, her muscles straining to her limit, she whined as her aching legs reaching their limit
"N-"
Her legs completely gave out.
The fox girl only had time to open her mouth before she fell, the top most rubber ball slammed into her butt sending her cheeks jiggling. She squirmed trying to escape it but there was nothing she could do as the purple ball wiggled and wormed its way between her cheeks and pressed up against her anus.
"Florrraaaa!!!
Her anus gave way and the ball squeezed itself inside. She dropped down several inches until the next ball slammed into her, only for a moment as her abused asshole gave way again. She continued to drop-stop her way downward, her legs going up in the air as each progressive motion drove her further and further over the edge
"NnnnghaaAIIIEEEEEEE!!"
She squirted as she came down, her paws slapping over the bulge in her belly that was significantly thicker as both the horse cock and pseudo cock slipped inside her. She could do nothing but thrash and wail as gravity forced her downward, purple rubber slop- slop- slopping inside of her along with the stretching girth of Fey's dick. She could feel the two masses pressing up against each other inside, squeezing her sensitive spots between them, running roughshod over all her buttons. She clawed at her belly bulge as her muff slammed into the medial ring. Her eyes rolled up as her lower lips began to slip over the edge and then engulf it and she dropped down, splop splop! Ever more balls slipped inside her. She wailed into her belly bulge, her legs kicking wildly at the air, her toes curling.
GLLRSCH! GLLRSCH! GLLRSCH!
"Oh! oh! Gods!"