"Y-you made me cum before you-! That, that isn't allowed! This goes against my authority!"
"G-gunna cum now!" groaned Fey and the Dragoness's eyes went wide.
The incredible tightness of Alexandria's pussy had prevented the precum in Fey's length from escaping, that precum was suddenly faced with a far stronger torrent of cum from the other direction, thick heavy cum that wouldn't be defied.
Fey exploded into her.
The dragoness looked down in shock as her belly surged outward, rapidly swelling until she looked six months pregnant.
"Wh-what?" said Lady Alexandria, sitting upright to look down at her growing tummy.
Fey gave the dragoness a fierce look, but then the dragoness expression moved from shock to pure contempt and it was Fey's turn to be shocked as the dragoness flexed her muscular abdomen and her cum belly started to shrink down, the filling inside compressing beneath her staggering strength and in moments her midriff, which had been rapidly expanding, was returning toward being flat and toned.
The dragoness had taken Fey's load like it was nothing, a smug look in her eye.
The only thing was.
Fey hadn't stopped cumming.
Another powerful spraying surge of horse cum was pumped into the dragoness's womb and her belly slowly started to grow outward once more, despite the straining of her abdomen muscles trying to compress it down, she just kept being filled, inch by inch her belly slowly rose outwards until she looked six months pregnant again, a smooth arcing curve from her breasts down to her mons.
"You c-can't, you- can't just keep- ah-"
Her belly continued to expand, Fey's surging ejaculations only becoming more powerful and lady Alexandria slapped her clawed hands down onto her belly, muscles flexing furiously as she tried to contain Fey.
Her growth slowed slightly, but still came on, a dragon's strength no longer enough to hold Fey back.
"GAHHH!" snarled the dragoness doubling down, her arms flexing and biceps bulging as she tried to squeeze back down her expanding cum belly.
Fey watched wide-eyed as the surface of her smoothly arcing creamy tummy began to tremble and shake, the ocean of cum being compressed down in her womb fighting to expand against its restraints.
Her cock strained harder, growing in girth as so much piled through, pumping rhythmically into the dragonesses womb, filling her with more and more and more.
It seemed the dark beast inside of Fey wanted to aggressively compete.
And it was winning, Alexandria's pale creamy belly was still inching outward, faster now, her belly button suddenly becoming an outie with an audible pop! as the insane pressure behind her midriff built.
"This is-!"
The dragoness seemed on the verge of being overcome by the flood but then she herself began to grow. If she couldn't contain all of Fey at this size then she would simply become larger.
As she inched taller, passing nine and a half foot and then ten foot her belly once more began to recede, the compressed space inside of herself becoming larger, her belly button pulling inward and returning to being an innie as her stomach returned from nine months pregnant to merely a curve and then nearly flat as she reaching fourteen foot, huge as she straddled Fey's body.
Panting and sweating the dragoness turned eyes on Fey, a conqueror upon the conquered.
"Your output is, remarkable, centaur, to think you would cause me this much trouble. And yet you fell like all before."
"P-pre!" Fey managed to groan out, eyes closed tight.
"Hmm what was that?"
"Th-that was all j-just the backed up precum!"
"...What?"
A rumbling sound came from behind and the dragoness looked over her shoulder in alarm to find Fey's massive balls growing a little larger, reaching a terrifying four foot across each, two pulsing, vascular, and terrifyingly dense orbs.
"H-hey h-hold on a second-"
A loud glrsshhh-ing! sound suddenly came from the dragoness's abdomen and it surged out a full foot. Causing her to shriek in alarm.
She slapped her hand down on her belly as it abruptly surged out a full foot more.
"N-noo!"
She flexed her muscles, insane strength brought to bear to contain Fey, bulging muscles outlined on her abdomen, biceps bulging, even her tail was ripped from Fey's pussy in a spray of clear fluid and wrapped around her midriff, everything brought to bear to compress down Fey's output.
She succeeded in slowing the expansion.
But the thing was, Fey had barely started.
The dragoness's belly swelled with cum, her creamy belly spilling over her hands, between the loops of her tail, pushing them aside as she inevitably grew fecund with horse cum. Her belly button returning to being popped out where it belonged, a broodmare's mark.
The dragoness was covered in sweat by this point, her face red with the strain as her breath came in puffed pants, her all focused on fighting down her cum belly.
Fey watched in shock as the trembling shaking pale surface slowly pushed aside the dragoness's immense strength, growing well beyond nine months with quintuplets and spilling down over her horse belly. She could feel the insane amount of cum compressed behind Alexandria's flesh, the heat alone nearly hurt to touch, the violent trembling of the incredible compression happening in her belly sending vibrations through her body.
The dragoness was openly keening now, arms grasping wildly at her expanding belly as her tail flailed, thighs coming together to try and push back the tide of cum.
It didn't matter and soon there was a cum belly filling the space between Fey's legs, long lines of white marking it as the dragoness's claws scraped over her creamy expanse.
She was unable to stop herself from swelling larger and her womb grew fatter and fatter with horse cum.