Tomtom sniffed the air, whiskers twitching, as Lisa bared her dribbling snatch. The instant re-charge Lisa had added to Tomtom worked like a dream; the red, pulsing poker re-extended from Tomtom's sheath, now slick and shiny with the cum from round one.
Happy he got the hint, Lisa dropped to her back, pulled her knees up and opened them wide. She ran a hand through the silky fur around her crotch, trailing pussy slime and pheremones through the soft hair.
Black beady eyes watching Tomtom advanced, front paws stepping over her knees and sinking the bed either side of her hips. Looking down she could see his rat-pecker pointing at her, and his massive testicles, bulging with semen, dragging along the bed behind him.
"Yessss" Lisa hissed, reaching out, grabbing the tip of his cock and swirling a finger around the tip. She was rewarded with a *churr* and a single jet of cum splashing on her stomach.
"Oh wow!", she exclaimed fingers trailing through the slimy warm cum. "I gave you some hair trigger."
She shuffled down on the bed, so that Tomtom's paws were now beside her head. Properly positioned she raised her hips and grabbed his pecker again. He instantly shot off again, warm pearls landing on her furry snatch. She felt them soak into the dense hair.
"Oh this is going to be fuuuuun" she angled the point head at her swollen and flowered snatch, rubbing it up and down her labia and clit. Each rub made Tomtom shoot another rope of his unexhaustable cum. Shot after shot painted her pussy, furry crotch, ass and inner thighs with a slick layer of off-white rat cum. The smell of cum was unbelievably strong, so strong she could taste it at the back of her throat.
Swallowing she positioned the head at her quiverring pussy lips and jerked forward, impaling herself on Tomtom.
"Time to take over rat-boy" she commanded. Tomtom took the instruction and began thrusting. The feeling of being filled suffused Lisa, and not just from his cock. A warm filled deep in her belly as each thrust from her rat-lover deposited a load of his hot, hyper-virile rat-cum directly to her thirsty womb.
Tears leaked from Lisa's eyes as she raggedly moaned in step with Tomtom's thrusts. This was the end of her world as a human, she knew. This much cum, she was going to be both, morphed unrecognisable, and 100% going to be pregnant by the end of this. Lisa knew that this was all her own fault for taking the mental block of fear off herself, and never felt happier for having done that.
"Don't *ahh* stop, *ah* tom- *hn* tom!" She panted, monosyllabic. "Fill *ah* me *hnngh* till *oh* I *gah* look *ahh* like *ahn* you!". She finished.
Tomtom churred with glee and pounded away, sending Lisa's tits jiggling. Fingers snaked to their intersection and slowly Lisa circled her swollen clit, heightening her pleasure. It was in that moment that she felt the first wad of rat cum slide out, pushed by the neverending flow behind it, and roll down between her ass cheeks. More quickly followed and within moments there was a rivulet running down her onto the sheets below.
"No *ahh* waste!" She gasped and slid a hand under her to her ass. She idled there for a moment, fingers swirling and smearing the cum around her asshole, and pushing a little in; before she cupped her hand at the bottom of her cheeks and began collecting their combined juices.
Once enough was collected she brought it to her mouth and without pause slurped it down, then putting her hand straight back. She relished the powerful taste of their love, running her tongue around her mouth, swirling around her large incisors.
She didn't have to wait long for the second handful to fill, before noisily slurping it down too.
The hole in her was being filled, slurp by slurp, thrust by thrust. As the minutes ticked by in a dreamy haze Lisa began to notice changes, agonisingly slowly, but changes all the same.
First, her nails went dark, then hard, then pointy, and the tips of her fingers swelled with pads as her claws grew in. She had to change how she rubbed her clit at that point to ensure she didn't painfully clip herself.
A tingling in her spine was next, and the wonderful feeling of being stretched. She felt a sausage like appendage slip from her back and slide past her ass-cheeks. Each time her hand went down from then on she felt her growing tail beneath her growing.
Ears followed as they stretched and fanned out, dish like and tingling with brown fur. It was like a new world opened up as they changed. Each sound was now crystal clear. The steady thump of Tomtom's heart. The excited fluttering of her own. The squelch of each wet thrust.
An itch tingling spread over her back and shoulders next as fur grew in, joining at the nape if her neck with the hair on her head.
Her tits receded next, with fur growing in on her flanks, leaving her with a flat chest, cum-filled pot belly and 8 black, rubbery teats. She came as she realised she'd be flat chested now till her litter arrived. She also noticed at this time that she could no longer find her clit. Something was changing and shifting down there. It wasn't a loss for their lovemaking though, as Tomtom swelled and filled her like never before, making her orgarms come thick and fast.
Hands and feet chaged next, delicate fingers and toes stretching and lengthening. Knuckles becoming knobbly and palm and soles swelling into pads. It made collecting cum harder, but the sight of it made her cum for what must have been the 10th time, toes curling like mad.
Gasping she looked over at the bedside clock in a haze. They'd been fucking for 40 mins so far. She was exhausted, thoroughly shook and fucked through, and getting raw down there. She was about to pull off for a breather when she felt her face tingle.
"Oh my! *gah* here *gasp* it *pah* coooomes" Lisa howled as she felt her face stretch. Inside her mouth she could feel her teeth morph, and the front of her mouth pull away from her tongue, only for her tingling tongue to then stretch. Her mind and vision fuzzed from the feeling, and her face itched furiously as her fur grew in. Cum covered paws reached up and claws scratched her face to relieve as her senses came back online, field of vision drastically widened, and sense of smell enhanced thousandfold. That was enough to send her into another mindwiping orgasm as the combined smell of almost an hour of rat sex pounded into her.
"Shhtaawwp" she mangled out through her muzzle and unfamiliar tongue, patting Tomtom's flank. The monstrous rat took the hint and slipped from her ravaged hole with a *sslllurpp* and a gout of chunky cum. Tomtom took to cleaning himself as Lisa panted on the bed. She was raw and shakey from the experience, but on a bliss high.
Her head turned, now completely aware of her whiskered snout sticking out in front of her, and her change in perspective. She had a much wider field of vision, but struggled to focus on any one item. It wasn't impossible, just harder.
"Vvvierd" she said out loud. Turning on her side and hissing at the pain between her legs.
"Yuu fucked meee raw" she sounded so different, even in her own head. All reedy and scratchy. She turned to Tomtom, and scratched his fur idly with her claws. He was... massive.
She turned her head to regard him. He seemed much bigger than his great dane size approaching a bear almost. Lisa's stomach jumped. He wasn't supposed to grow!
"Ffukkk" she hissed, scrabbling up and made to get off the bed. Only for the ground to lurch away from her as she sprawled painfully, belly first onto the ground. Humiliatingly, the force of the impact on her overstuffed cum-filled pot belly was enough to make her burp and regurgitate a mouthful of chunky cum onto the carpet in front of her.
She giggled and gave it one or two licks before rolling over to look up at the bed, towering above her and feeling a fool.
"Yuur not bigger. I'mw smwaller". On shakey legs and stinging groing she stood up. Edge of the bed now at her bellybutton.
"Time to cee wrat-mee" she croaked and waddled awkwardly over to the mirror. She gasped at the sight. At well under 4 foot, the creature stareing back with beady eyes was a bizzare, furry, pot-bellied humanoid rat, with copious amounts of matted fur around her crotch and cum running rivers down her legs.
"I'mw shhooo pwetty" Lisa gushed, genuinely happy with the changes as her paws ran over herself, touching everything to make sure it was real. She swirled, watching her long tail swish behind her.
She paused then and looked at her matted crotch. She turned her head to focus and couldn't see her cleft.
"Oh yaa. It changd too"
She plopped down onto her ass, opening her knees and scooting her bum forward. In the mirror she saw her new genitalia. No longer human and hidden away, her outer lips had shifted, shortened, and puffed to make her pussy stick out grotesquely. A puffy, rat vulva, drooling cum.
"Niiiiice. Looks good Tomtom" she scratched looking at her mate licking himself clean. That struck a thought within her. She was filthy, covered in cum, as was the room. Maybe she should clean herself a bit. Have a shower or...
She hesitated, wondering, then leaned forward. With surprise she found her flexibilty improved, and her range so increased by her snout that she could bring her tongue to her crotch. Gently and slowly the rat-girl began to clean herself.