"Please! I can't do this on my own!"
The Lamia looked away then slumped her shoulders as though resigning herself to it.
She coiled her tail up and slipped it beneath Fey's barrel, the tip touched up against the shivering whining dogkin then made its way up her leg until it found her hips. With sudden powerful strength the tip coiled around the dogkin's waist, wrapping around and around her and dragging her into the air.
"D-do eeet! Put it in meee!"
Rina looked at the throbbing horse dick below Fey and bit her lip, there was no way this thing was going to fit, she had just better hope that pressing her up against it would be enough to give her friend some relief. She sidled up beside Fey so that she could get a workable angle, sharing awkward glances with the centaur as she moved and coiled her tail beneath her barrel.
The dogkin's muff pressed up against Fey's cock and she let out a whorish moan, desperately wriggling her hips in Rina's grip, trying to push herself onto broad leg thick head.
"H-harder Rina! Harder!"
"Uhm, are you sure? This can't be healthy…"
Zal cried out as tears formed in the corners of her eyes, desperately pleading with needy mewls, her hands clutching at Rina's pink scales.
"O-okay, h-here I go!" said Rina, not quite sure what she was doing anymore.
She pressed the dogkin up against the tip harder and harder and harder. The lamia found she needed more leverage however and hesitantly wrapped her arm around Fey's upper back using the centaur to hold herself firm. This caused the centaur and lamia's enormous breasts to press up against each other, side by side. She gave the centaur an awkward look, this wasn't exactly a normal position to be in. Fey caught her eye and smiled shyly, they were practically hugging as the lamia pressed the dogkin against Fey's cock. There was something deeply embarrassing about the situation, like two people fondling each other, one with their hand down the other's pants out of sight while at the same time the pair tried to pretend everything was normal.
Rina's hand tightened on Fey's bare waist and with a grunt she coiled and pushed her tail, pressing the dogkin up against the horse cock, Zal's wailing reaching ever higher until with a sudden unexpected schlpop! Her pussy slipped over the head of Fey's dick with a jerk, a bulge appearing in her tummy that pushed up against Rina's scales. A splatter of fluids sprayed over the lamia's coils as Zal howled and her insides clenched down hard. Rivulets of the dogkin rolling over the pink scales to drip drip drip to the ground below.
Rina gasped aloud and her vast breasts were sent rolling across her chest to collide with Fey's, the centaur stumbling a little under the shifting weight of the Lamia.
Concern suddenly appeared on Rina's face. "Oh gods! Zal! Are you okay! Did I hurt you?"
"No! Oh Rina, it feels, it feels amazing! P-please! More! Use me! USE ME!"
Rina glanced at Fey who looked a little amused.
"Uhm, It's okay she'll be fine, I promise."
Rina bit her lip and shifted her tail. She could literally feel the hardness of Fey's cock bulging out Zal's tummy, pressing into and rubbing at her scales. What the hell was going on? Cautiously, she gripped at the dogkin and moved her down a little more, to her surprise she went down easier than she would have imagined as though she could easily go even further. The bulge pressing up against her scales expanded outward, sliding over her tail and creating the most peculiar feeling.
"My gods this feels strange, how is it going so easy? I had no idea you were so uh, capable, Zal!"
"It's not meee-!" whined the dogkin her words cutting off as she slipped down a few more inches and her tummy bulged outward more. The motion caused her vagina to pulsate around the dominating length, the rising pressure in her abdomen had triggered a powerful orgasm and the dogkin's face melted into an expression of pure bliss. She buried her face into Rina's scales as she yipped and clenched down on Fey, her fingers clawing at Rina's tail, fingernails digging between her pink scales.
"Oh! OH!! It's so deep!" Whined the dogkin, her eyelids fluttering.
Rina gave Fey a disbelieving look like she couldn't quite believe what she was feeling. She could not see what was happening to Zal so she had to rely on touch and what she was touching was hard to understand. As she slowly shifted her coils back the dogkin's pussy was just taking more and more of the two foot eight or nine inch dick inside her body, pushing out her smooth tummy further and further. Rina felt a little heat come to her cheeks as her coils shifted against the bulge and then she froze up as she came to the sudden awkward realisation that she was not only thrusting her friend upon this well endowed centaur's penis but also accidentally masturbating her length through the dogkin's belly.