Zal's eyes rolled up as her pussy crashed down and she bottomed out, the entirety of Fey's dick sheathed inside of her, overwhelming her body with its sheer size. Her vagina convulsed and spasmed as a tsunami of pleasure hit her. Fireworks exploded in the dogkin's mind, each plume of fire sending bouncing snapping sparks around her pleasure cortex in a daisy chain of agonising bliss that wiped her mind blank leaving her nothing but a howling sloppy mess who lived for nothing but dick and to be dicked.
A clear, steaming splash of girlcum squirted out from between her stiffening twitching legs, spraying down her thighs and splattering wetly over the lamia's scales. Then again and again until the fluids she was spraying and squirting were sputtering and spurting as her cunt clamped down harder and harder and harder on Fey's length, like a tight slippery vice.
Her pussy clenched and practically slurped on Fey's massiveness, desperately suckling at it trying to get it to fill her fat with thick virile baby batter, inseminating her eggs with desperately needed sperm, ejaculating into her sacred place until the she had gotten as many as four spurts of cum, that was a lot for a male right? Her imagination ran wild with what was coming, with the amount a horse could cum she expected herself to maybe overflow a little with the whole entire cupful of cum she was imagining, maybe even a full pint of cum! That would be incredible!
The dogkin truly had no idea what was about to hit her.
The first thing she knew was the feeling of Fey's cock swelling inside her, growing significantly girthier, stretching her out further than ever before, then she felt the flared head digging into the walls of her womb anchoring itself in place leaving no escape for the dogkin for what was about to happen. Then she felt what she wanted so badly, the underside of the shaft thickening even further as the roaring rushing surge of cum exploded down Fey's dick and exploded into her. Her belly bulged outward, instantly creating a balloon of tummy between her breasts.
The dogkin's eyes went big and round and shocked as Fey came more than ten horses in just one single roping spurt.
"HNNNNGGH!" groaned Fey, tensing up as her hips thrust forward, her cock bucking up, momentarily lifting both the dogkin and the lamia's tail into the air as the next pulsing surge of cum blasted into the dogkin's womb inflating it outward massively, easily over a foot across already.
Zal couldn't help but cream herself from the relief alone as she felt the fires of her heat extinguished by the massive tide of maleness wash up over her insides and over her eggs.
The problem was that Fey had only just started cumming and the dogkin was left gaping at her own womb as it filled and filled and spread and spread until it was spilling out between the lamia's coils.
Wave after wave of cum filled her womb fat. She could practically hear her womb churning with the contents being sprayed into it; sloshing as it ballooned outwards, growing larger by the second as rope after thick fertile rope were ejaculated into her over and over and over.
"F-FuCK!!! Oh lord! Oh my, OH!! AHH!! OHhhHhh!!!" moaned Zal, her whole body reacting to the filling pressure.
"What's happening! Oh my god what's happening! What is that!" wailed Rina as she felt her scales being enveloped by warm sloshing belly.
"It's okay! It's okay! It's just Zal being filled with my cum."
"That- that doesn't help! What if she explodes! What even is this!"
Fey grabbed at Rina's chin and turned the fretting Lamia until she was looking her in the eyes.
"She'll be fine- I- I promise!" Fey not sure what she was doing anymore but working on a darker more feral instinct pulled the lamia's face close and pushed their lips together. She felt the lamia panic and then relax into her, hesitating and then reciprocating. Fey moaned around the lamia's tongue as she suddenly felt her tail begin massaging and squeezing at the dogkin's rapidly expanding tummy, squeezing her shaft inside with its high pressure cummy surroundings.
"Oh gods I don't care anymore! Just fill me, fill meee! Breed meeee!" squealed the dogkin as the massaging feel of the lamia over her ballooning womb drove her over the edge once more.
As she did so Fey's hips thrust once, twice, and then one final time sending one last huge surging rope of cum into her packed belly, this sent the overwhelmed dogkin over the edge once more and her eyes rolled up into her head as she squirted herself silly.
"AAAAIIIIIIIEEEEEEEE!!!" GLLRSCH! GLLRSCH! GLLRSCH!
She came and came and came and came until clear fluid was running down her inflated belly in waves. And then she passed out and collapsed atop the massive sagging mass that was her cum filled tummy.