The start alone is going to be enjoyable for everyone present.

Faye grabbed Anna's well-trained ass with both hands and lifted the fitness coach with the same ease she'd just lifted the 150 lbs on the squat rack. And although the dog morph could feel her leg muscles burn, Faye's steps were firm and steady as she carried Anna to one of the padded benchpress benches nearby. The personal trainer used that opportunity to nuzzle and kiss the dog morph's neck, both hands now fondling and caressing Faye's breasts - Anna was a fair bit smaller than Lily, even if she was much fitter. Sitting down, the dog morph ended up with Anna on her lap, who began gyrating her hips again the instance she had the necessary leverage, legs crossing in the small of Faye's back.

"I'm gonna take my shirt off, Anna. It's gonna be... weird, so... don't freak, okay?" Anna nodded, staring up at Faye with wide-eyed, almost adoring expression, and slid backwards a little, sandwiching Faye's pulsing shaft between her generous ass and the padding of the bench. Wasting no time, Faye unceremoniously pulled off her shirt and tube top at the same time, freeing her sextuplet of tits and presenting them to a flabbergasted Anna. "Wh-what do you think?"

"Wow..." Gingerly touching the dog morph's middle left tit, Anna stared at the smorgasbord of boobies in front of her before looking back up at Faye. "Are they... are they real?"

"Sure--nnfh! Sure are," Faye replied, sucking in a sharp breath as Anna's fingers trailed over her nipple, making the little nub crinkle and harden visibly. "And they're sensitive...eep!"

Anna instantly used that newfound information to and leaned forwards to wrap her lips around Faye's top right nipple, her hands cupping both of the dog morph's middle tits, gently lifting them and letting her thumbs play over the nipples capping them, making sure that all six of Faye's pleasure nubs grew just as erect as her pulsing shaft. The dog morph, of course, was not idle, cupping Anna's head and gently stroking her hair with her right while Faye's left grabbed the edge of the bench behind the dog morph's muscular butt for stability as Faye leaned back to give Anna a better angle to suckle on one tit while playing with two others.

"Mmh, that's so nice..." Petting Anna's head encouragingly, Faye arched her back, biting her lower lip as she felt her shaft pulse and a fat dollop of pre squeeze out the tip. "Your lips are so soft..."

The only reply was a low moan that travelled into Faye's breast and from there straight to her brain's pleasure center, setting off veritable fireworks of lust that had her gasp and pull Anna's head deeper into her soft titflesh. Soft sucking and slurping sounds began to fill the air as Anna became bolder and more eager to please Faye, her hands kneading and squeezing the dog morph's middle boobs more insistently, Anna's hips shifting back and forth to stimulate the fitness coach's eager pussy on Faye's massive fuckstick.

"Fuck, that's so haawwt~..." Lily groaned from where she had sat down on a thigh press machine, shirt pulled up and tube top pulled down to expose all of her sizable breasts, the hand that wasn't stirring up her pussy roaming all over her front to make sure none of her tits were neglected for long. "That's it, suck Faye's titties, lick those hard nips--ah!"

Knowing that her packmate was enjoying the sights gave Faye a delicious thrill - being watched by her lover only made what was happening even more enjoyable, it turned out. Cum began to roil and churn inside the dog morph's nuts, and the way Faye's oversized fuckstick throbbed and drooled reminded her that - if she wanted to actually fuck Anna and not just cum from the fitness coach's eager suckling and fondling - Faye needed to get to the main event.

Leaning forwards until Anna was lying on her back on the bench, Faye gently pulled her cock out from under the fitness coach - who never let go of neither the dog morph's nipple with her lips nor Faye's middle rack. Rising on her legs so she do a complicated little dance to step out of her yoga pants, Faye freed her turgid, pulsing shaft without ever depriving Anna of her fat tits and finally grabbed the hem of Anna's yoga pants, gazing down to where the personal trainer was still nursing on Faye's boob.

"I'm gonna pull off your pants now, okay?" After Anna nodded and mewled into Faye's breast excitedly, the dog morph began to pull down the pants, aided by Anna moving her legs eagerly onto the bench to make undressing her easier - and within seconds, her shaved, sodden muff was twitching and fluttering in the open air, Anna moaning in anticipation as she felt the bulging underside of Faye's massive shaft hover inches from her snatch. "I... I just hope I'm not too big for you..."

That worry wasn't unfounded - even bent over Anna as the dog morph was, Faye's cock hovered over the fitness coach's stomach and dripped slick pre-cum onto her belly button. But Anna was clearly less worried about maybes and merely switched from Faye's upper right breast to the dog morph's upper left, suckling the until now unattended nipple just as enthusiastically as the other. Her right hand, meanwhile, let go of Faye's boob entirely and grabbed her partner's fat prick instead, eagerly stroking it and bending the pulsing, rock-hard fuckstick down to rub her snatch against it.

"Hnnf~..." Faye shuddered and arched her back, grinding her crotch to meet Anna's gyrations as she bit her lower lip. "You're right, we sh-should at least try..."

Pulling backwards until she could angle her pointy tip at the sodden entrance to Anna's very core, Faye felt her heart thump against her ribs so hard that the dog morph was almost sure that it made her tits quake with every beat. Anna was incredibly hot, in an impressively toned, gym bunny way - Lily was fit, but the fitness coach was in another league entirely, with a godly ass and thighs, firm abs and well-toned shoulders and arms. And Faye, who'd been a virgin just days ago, would now get to fuck this goddess with not only her enthusiastic consent, but her packmate's as well?!

"I... I'm gonna try and put it in, o-okay?" Anna mewled in anticipation and nodded into Faye's tit, leading to the dog morph slowly, carefully pushing into her partner, one hand on Anna's hip, the other gripping Faye's cock gently just before the knot. Thefirst inch alone had an instant effect.

"Aahahahohfuck!" Finally, Anna let go of Faye's nipple, arching her back and groping the dog morph's left middle tit roughly as Anna rather vocally communicated her enjoyment of being spread so very, very wide. "Keep gh--keep go-oooh~!"

At least she managed to let Faye know she was more than alright with the dog morph going deeper - an invitation that Faye obviously accepted enthusiastically, if with great care. The size difference between them was greater than between Faye and Lily, and the dog morph's cock had filled her packmate to capacity and beyond, poking into Lily's womb when she had knotted Lily. With Anna, it remained to be seen if the fitness coach even could be knotted.

"Nh-ah! Deeper... Deeper!" Not that Anna was opposed to trying her best to make it happen. Holding on to Faye's waist with both hands, her arms pressing into the soft swells of the dog morph's middle breasts, Anna used the leverage to try and pull herself along the bench and further onto Faye's cock. "Fffuck, you're so big!"

That made Faye's cock lurch powerfully, the tip creating a generous bulge in Anna's lower abdomen as a fat glob of pre squirted into the fitness coach's twitching tunnel, Faye's tail twitching left and right in lustful agitation. The dog morph felt a giddy smile pull at her lips; this was exactly why she'd taken the pills in the first place! Granted, the circumstances went much farther than she'd ever dreamed as James, but the tits, the muscles, the knot... everything just made sex so much better. The effect these things had on everyday life was a little less fun, but whatever.

"Ah-I'm not hurting you, am--mgh! I?" Anna felt almost unbearably tight, the walls of her pussy like a slick, silken vice around Faye's swollen shaft, twitching and clamping down uncontrollably. And still, Faye slowly moved forwards at the fitness coach's insistent tugging and gyrating, pushing inch after inch inside her partner. "Y-you feel s--nnhgh!"

"Mh-nh-ghg--no! It's perfect! It's gigantic! I love your diiiick~!" With a rising cry of bliss, Anna twitched and shook under Faye, her fingers digging hard into the dog morph's sides as Anna's pussy milked her cock relentlessly. It took all of Faye's focus to stave off her own climax, but she managed to hold on, if only just. "A-a- auuugh!"

"Mnnh, you made her cum just from putting it in," Lily mewled from the sidelines - judging by her voice, she was about as aroused as if she was the one getting banged on a fitness bench. "K-keep going, I wanna nnh-know what happens when you knot her!"

"Ye-yesh pleeeaaashe~..." Though her words were slurred and her body almost limp, Anna's eagerness was undeniable. Even now, she gyrated her hips weakly around Faye's massive pole, stretching her sodden snatch every which way.