“I’m not stopping the car until we get there, so if you can’t hold it in, just do it.”
“What!?” To say that Josh’s ‘solution’ to her current predicament surprised Brenda would be a major understatement.
“Look,” Josh sought to explain himself. “I don’t know how long I can keep driving this, and I’d like to be as close to a rest stop as possible in case that happens. Which means I don’t want to risk any delay.”
What Josh, and indeed, Brenda and Gabe as well, could never realise - at least, not anytime soon - was that the very same magic that was making them what they were becoming, had not only been keeping them from panicking - and in fact, was making sue they enjoyed it - was having at least one additional effect on them.
“Good point there.” Gabe sided with him, leaning back further and aiming his cock up his chest. “In fact, I think I’ll do it right now!”
And true to his word, a solid stream of yellowish piss poured out of his penis, climbing up before trickling its way back down.
“Why are…?” Brenda began before faltering, her alarm at his act diminishing by the second.
“Hard, to say.” He grunted. “Like there’s, no, reason not, to.”
“I, guess so…” She muttered, turning before she could see Gabe’s torso widening as he continued relieving himself.
Instead, with another wet fart alerting her to the fact she had no time left, she simply steeled herself, and with a hard grunt and push of her own, forced her sphincter to relax and allow her waste to tunnel out of her, straight into her pants that immediately began to bulge visibly.
“Aahhhh…much, better…” Brenda moaned, the aching pressure relieved as she relieved herself, not caring for the growing stench of bodily waste filling the interior.
A satisfaction that was short-lived as a jolt ran through her, mainly her hands that forced themselves to clench as she stared at them, digits fusing thus leaving her with the same hooves at the ends of her arms as she had for feet.
She twisted round to look at Gabe again, and now noticed that he was taking up over half the rear seats now, while Josh appeared to be unchanged.
“So why are you still like that?” Brenda wanted to know. “All that’s different…is…hold on, I wanna, ‘test’ something. Better get that camera ready.” Realisation had kicked in.
Once Josh was ready to snap some photos, shaking with eager anticipation, Brenda resumed her act of unloading her filth into her tighter pants, this time also emptying her bladder while she was at it.
And this time it happened faster, giggling whinnies escaping as she watched her chest barrel out, once massively swollen breasts sinking into them. Arms stretching out to match the length of her legs, creaking, perhaps from the seat, maybe the pants or suspenders she didn’t know or care. Her head larger and supported on a longer, thicker neck. All the while, Josh eagerly snapped as many shots as he could while making sure they kept on the road.
And Gabe hadn’t been idle in this either, while not as far along as Brenda, still possessing usable thumbs for now, he was still well on the road to becoming a fine draught stallion. Forced to lean heavily to keep his head from the roof.
“Wow…” Brenda couldn’t help but gasp out once they took another group-shot selfie of their new state. “…that was….something…”
“Gonna be a hell of a mess to clean up,” Josh pointed out. “But, I’m not complaining.”
“Your turn.” Gabe spoke up.
“Excuse me?”
“Your turn now Josh.” Brenda sided with her cousin this time, managing to point a hoof at him. “We just messed ourselves, you’re not leaving yourself out of this. After all, it was your idea.” She added with a smirk, shifting a bit in her seat that she didn’t fit properly in now, shifting the wet, sagging mess in her stretched pants - seemingly held up only thanks to the suspenders that dug into her shoulders - as she did.
“Another twenty minutes or so before we get there? May as well…” Josh ceded to them, setting himself up for his own act, for which Brenda got - quite literally - a front-row seat to witness the dark wetness forming on her very equine (Percheron?) boyfriend.
“Feels goo---d.” Josh moaned softly, broken by a loud snort once the buttons on his shirt began to pop free.
As did the fly on his jeans, finally allowing Brenda to see the massive horse cock he possessed. Not yet at Gabe’s level, his brushing his collars if he moved just right, but heading in that direction. Something that made a new sticky liquid drip from Brenda, adding more to her increasingly stressed out pants. And now, she began to wonder, if they’d - or rather, she - could keep it together for the still longish wait before they could stop.