Boze let out a long low whine that rose into a bird like trill as the head slowly, agonisingly, pressed up against her cunt harder and harder and harder.
Kayla watched with fascination as the harpy's thighs and cheeks were spread apart with the immense girth. She'd moved from her previous position and was straddling the top of the dick, her legs to either side with her arms wrapped around it, her torso lying atop its length.
"Okay, now, here comes, uhm, penetration," said Rina, desperately trying to keep her voice level and detached and failing utterly.
"Oh gods just do it already!"
Rina moved.
Her arm tensed up around Fey, holding the centaur fast, their breasts touching together, then she arched her spine and shifted, putting leverage down into her spiraling tail which then with a surge of powerful lamia muscle pushed outward, her tail acting like a gigantic spring, thrusting the harpy down the centaur.
Boze opened her mouth and screamed as the cockhead brutally slammed up against her pussy and then forced her lower lips wide in a thin ring around the cock, her inside walls stretched over the hard unforgiving length in such a way that every micro bump and every little texture of Fey's immense dick was felt in extreme detail by every little nerve cluster she possessed.
The effect was immediate and dramatic. Squirt exploded from the harpy's pussy in a high pressure spray that appeared white because the clear fluid of her juices were being expelled at such a velocity. A rising hose of the spray struck Fey's barrel so hard it dimpled her body before it ricocheted back up in a finer spray in every direction dousing everything. As Boze's voice became more shrill and loud the line of squirt rose until it was hitting Rina's scales and back spattering up Boze's thighs in a noisy cacophony of fluid.
Kayla watched with fascination as the back of Boze's pussy engulfed Feys dick, the lips stretched so thin over it that she could see Fey's veins outlined through the skin. She couldn't help herself, she began humping and grinding her crotch on the length, her panties quickly becoming damp.
Boze's unusually high volume emissions didn't slow Rina and she thrust the screaming squawking harpy down Fey's length until the light brown skin was bulging outward, the tip of Fey's dick outlined in her smooth muscular stomach. Her powerful sixpack was drawn taught over the shape, desperately clenching and drawing in, making the feeling of being penetrated all the greater as her insides were squeeeezed between her abdomen muscles and massive equine intruder.
The harpy for her part was struggling desperately, her legs kicking furiously at the air, her toes splaying as her thigh muscles clenched and unclenched sending her buttocks jiggling with her.
The harpy slowed momentarily, her sliding motion came to a stop, even as Rina strained.
"I think that's the entrance to her womb," said Fey, biting her lip, "I can feel the ring of it pressing against my tip."
"D-does it feel good? W-would it feel better i-inside?" said Rina. The lamia was pressing herself up against Fey harder and harder, her breasts squashing as they pressed against the side of Fey's, her nipples hard and visibly erect through the fabric.
Fey blushed and looked away. This felt very unmedical.
"Uhm, yes? Inside, the deepest part of a girl, inside her womb, feels, uhm, really really good, like I'm supposed to be there, to pump them full of myself, breeding them as hard as possible."
Rina's lip trembled a little hearing that, a single tiny droplet of drool rolling from her open mouth.
"F-fuck, okay, okay. Boze, you're going to get it in your womb, I hope you're ready."
"I'm fucking what now, what di- AIIIIEEEEEEEEEE!!"
Rina, hungry to pleasure Fey, thrust down with her scales as hard as she could and Fey's dick punched through the harpy's cervix in one big rush, a muffled POP! Heard from inside her body as she was penetrated in her deepest most sacred place. The harpy's stomach bulged out violently thrusting between Rina's scales.
As she did so Kayla grabbed ahold of the thighs rushing toward her and buried her face in Boze's rear, her tongue desperately lapping at the fold of skin at the back of the harpy's puss stretched over the massiveness of fey. If she couldn't have that herself then she would put herself as near as possible.
In that same moment Lily flipped over the teddy bear and buried her face into its crotch the same as her sister was doing to the harpy. She furiously tongued and bit at the bear, pressing her tongue against the sopping cloth as hard as she could, precum gushing into her mouth as she squeezed the sponge-like thing, lapping at it over and over and over.
Boze's orgasm peaked and then seemed to find another even taller mountain to climb, the triple effect of being massively penetrated and the sensation of being orally stimulated at both the front and back of her pussy at the same was too much for the hyper sensitive harpy.