Steven heard the intruders way before he saw them. Being a rabbit had that going for it at least - he often heard things others couldn't. 
The intruders he heard weren't technically "intruders" because they weren't on his land - or rather, his parent's land - but he often thought of the city garbage dump as his special place to explore and dig for treasure after it had closed for the day. If he'd stopped and thought about it, he was just as much of an intruder, since he wasn't supposed to be there, either.
The dump sat beside his parent's small farm on the other side of a wide grove of trees, and Steven often visited it on Saturday evenings in the warmer months after he had finished his chores. It was only open for use on Wednesdays and Saturdays, so the best time to get there and look for discarded treasures were the evenings of those days after the old dog who ran the place had locked the front gate and gone home.
At first, Steven had looked for anything interesting or exciting - old soda machines, broken-but-still-usable toy cars, an ancient microscope complete with dried-out slides of different plants and algaes - but in the past couple of years, his interests had changed.
He wasn't sure what had happened, or why, and he had no idea what it meant, but two years ago, when he was ten years old, he began to notice that whenever he saw balloons or inflatable toys (or even just pictures of them), his wiener started feeling good in his underwear. As the days went on, those good feelings started becoming more and more insistent until he used his allowance money to buy a pack of big balloons from the party section of the local department store. Sneaking his treasure home, he rushed to his bedroom, blew up a pretty pink one, tied it closed, and kicked off his pants and underwear.
It was the first time he'd ever looked at his wiener when it felt good like that, and he was surprised to see it had gotten a little bigger and was poking out like a little stick. Without understanding how he knew, he knew that he just had to lay with his penis on top of that balloon. He flopped onto his bed, positioned the balloon just beneath his crotch, and let his weight sink onto the soft, yielding, air-filled latex. The balloon flattened and stretched beneath him, wrapping around and pressing up against his stiffy.
He'd never felt anything that amazing before in his life. 
He wasn't sure why, but the thought leapt into his head that he should push into the balloon and bounce. He gently shoved his hips forward and the pleasure went off the charts. He let his hips up and pushed down again and...
BANG!
The balloon popped beneath him in a spray of rubbery pink shreds.
"What was that!?" Andrea's voice cried out from downstairs.
"N-Nothing!" Steven shouted back. His sensitive ears picked up the sound of his older sister's footsteps on the stairs. The good feeling vanished almost instantly and he rushed to get dressed and clean up the ruined pieces of the balloon. He finished in the nick of time, grabbing his large arithmetic book and holding it up as she threw open his door. "I just dropped my math book on my desk," he lied.
His sister's nose and ears twitched as she scanned his room. "Ugh. You're such a nuisance," she snapped with a roll of her eyes before leaving and pulling his door shut behind her.
After that, Steven had stopped laying on his balloons for fear he might pop them, but he still felt an overwhelming need to have them against his wiener. Instead of him being on top of them, he reasoned, they should be on top of him.
At first he'd tried putting them down in his underwear and blowing them up with the tube from his dad's bicycle pump, but his underwear were too small for any of his inflatables to really inflate. Then, one day in school it hit him that whenever cartoons showed babies wearing rubber pants, those rubber pants would stretch, so it only stood to reason that they would expand along with whatever balloon was beneath them - and he knew exactly where he could find a pair of baby pants!
He wasn't proud of it, but he'd been a bedwetter until he was about eight, and his mother had always made him wear a pair of what she called rubber pants beneath his pajamas every night. When his bedwetting stopped, she'd thrown them all away, except for one pair that she'd forgotten about: the "travel" pair she'd always made him wear whenever they were on vacation or visiting far-away family. That pair was right where he'd last seen them, folded up tight and flat and tucked into the inside pocket of one of the family's old suitcases.
As soon as he got home from school that afternoon, Steven rushed for the attic and threw boxes aside until he got to the suitcase that he'd always been made to carry. His ears twitched this way and that in his nervousness as he popped open the latches and flipped open the lid. With trembling fingers, he lifted the top of the internal compartment... 
There they were. 
He was never sure afterward if it was the pants themselves or the thought of putting a balloon in them and blowing it up, but he was surprised to find that good feeling tingling away in his tighty whities. It grew more intense as he gingerly lifted the baby pants from the suitcase. It practically throbbed as he unfolded them and the soft, earthy, yellow smell of pee hit his trembling nose.
He dropped his pants as quickly as he could and slid the baby pants up his legs. He lost himself in the feel of the leg elastics gripping his thighs. He practically shuddered as the soft, smooth, waterproof material slid over his jutting stiffy. He was thrilled to notice that they still fit - Steven was small for his age; at age ten, he was only about the size of the average five year old. He snapped the elastic waistband around his waist and reached behind him to wriggle his poofy bunny tail through the tailhole elastic.
He stood for only a moment luxuriating in the smooth, cool feel against his sensitive wiener. Grabbing the white balloon he had brought up into the attic with him, Steven stretched the opening over the end of the bicycle pump hose, and stuffed it down between his stiffy and the buttery softness of the baby pants' waterproof interior. Two quick pumps and he exhaled heavily in pleasure as the balloon puffed out around his pee-pee. The baby pants bulged outwards as he continued to pump, but they didn't stretch like he had thought they would.
Steven learned an important lesson that day. His glorious baby pants were not actually "rubber" pants, he realized, but "plastic" pants, and plastic didn't stretch the way balloons did. He was too far gone to care at that point, of course. It was all wonderful. Plastic panties, blow-up toys, balloons... diapers... He didn't know why that last one popped into his head, but the thought made his stiffy pulse with even more pleasure. 
In all of the boring times of the next two years he daydreamed about all of the things that made his pee-pee feel so good in his pants: inflatable toys, balloons, plastic panties, and thick diapers - the kind with the crinkly plastic covers, not the papery, cloth-like ones - and if all of those things happened to be in girly colors or designs, well for some reason his wiener felt even better! His favorite fantasy he came up with was one where he was kidnapped by person or persons unknown and forced into a room with inflatable walls, inflatable chairs, and an inflatable crib. Strong robot arms would emerge from panels in the walls and strip him of his clothes and force him into pink diapers and plastic pants before another robot arm would emerge and plunge the nozzle of an air hose into air valves hidden at the back of his pampers and baby panties - inflating each in turn until all he could do was sit and bounce and suck on the pacifier placed in his mouth by another mechanical arm. He would eventually wet himself, and the arms would deflate his pants and change his diaper and then repeat the process. It was a daydream that kept his crotch tingly and warm through many hours of boring classes and boring bus rides. 
It was also during those past two years that he discovered that sometimes the people of his town threw away inflatable toys, and although all of them so far had leaks or punctures, he could still blow them up long enough to bounce his naked stiffy on them until they went flat or burst at the seams. No one seemed to throw away plastic panties or unused diapers, however, but he'd kept searching diligently from the start of spring through to the end of fall, just in case he might make that one magical find.
Which is exactly what he was on his way to do on the warm Saturday afternoon when he heard the intruders in "his" treasure pile. Once he'd finished his chores and gotten the okay from his parents to go exploring, he'd rushed to his room to change out of his work clothes and into a t-shirt and a pair of shorts. He'd also changed out of his tighty whities and into that old pair of plastic panties that he'd kept hidden between the mattress and box springs of his bed. From the house, it was only a quick run to the edge of the yard to slip into the woods to his secret path from the farm to the dump. 
The woods opened out onto a large, barren clearing of dry clay mixed with gravel. A small, dry ditch wended its way along the border between trees and landfill, and Steven had followed it to a small hill that rose up to a ridge and then dropped back down on the other side into the dump. It was when he was almost to the top of the ridge that his sensitive rabbit ears picked up the noises on the other side: junk and garbage shifting, cans and bottles clinking together, the rustle of plastic garbage bags, and a kid's voice.
"Oh shit! Tammy! You gotta come see this stuff!"
Curious, Steven dropped to all fours and crawled stealthily up to the top of the ridge to see who was intruding on his domain. Down below, a pair of wolves were digging through his garbage!
He knew both of them. The girl, dressed in a pair of jean shorts and a lacy pink tank top accentuating her firm, medium-sized breasts, was Tammy. She was sixteen and was using a large stick to poke half-heartedly at a pile of trash. That meant the other wolf - the boy in a pair of baggy-but-short khaki shorts and a pastel yellow t-shirt - would be her brother, Tommy, who was fourteen, and who was peeking over the edge of a beat-up, old, cardboard box almost as big as he was.
Though he knew the Wilson siblings, Steven didn't know that much about them. Even though they rode the same schoolbus as he and his sister, the two always sat together. They got on the bus after he and Andrea in the morning, and got off the bus about twenty minutes before them in the afternoon. He also knew that they went to the Montessori school at the edge of town and spent most of their time with their family or with each other.
As Steven watched, Tommy stood on his tiptoes and leaned over the edge of the box to fish around inside. Up on the ridge, the rabbit boy's eyes nearly popped out of his head - when the wolf boy leaned over the box, his shirt rode up and his shorts pulled down, revealing the glistening, plastic waistband of a disposable diaper peeking out of the white elastic waistband of a pair of pastel-blue plastic pants decorated with images of diapered babies of all species clutching baby bottles. Steven blinked several times and looked harder to make sure he was seeing what he thought he was seeing. It couldn't be possible, he thought. Unlike Steven - who was still only about the size of an average six year old - Tommy was average for his age, so there was no way he could be wearing real pampers and baby pants. Unless... Steven looked again. The teenaged wolf really was wearing a large diaper and a pair of plastic baby panties, obviously sized to fit his larger form.
Thrilled at the idea that they made such things for bigger kids, Steven's wiener began to tingle inside his own plastic pants as he inched forward to get a better look. He froze when Tammy looked up and sniffed the air, her ears twitching, and her tail gently wagging as she scanned the dump. Steven was certain he hadn't been spotted when she looked down at her brother's diapered rump hanging over the edge of the box, his sneakers barely touching the ground and his tail wagging frantically.
"Whatdja find?" She asked with a hint of bemusement in her voice as she made her way gingerly to the box.
"Only the best find in the history of best finds!" Tommy exclaimed. He pushed himself upright, stumbling backwards with an armload of boxes and cellophane packets that spilled out everywhere as he struggled to keep his footing. "Lookit! Diapers. Balloons. Plastic pants. Seat floats. Air mats. Ride ons. You name it! It's like it was a box custom made for me!"
"Custom made for me!" Steven whispered jealously up on his ridge. "That's my box!"
Tammy's ears twitched and her muzzle curved into a gentle smile as she took one of the packages - a small white box decorated in bright red - from Tommy's overloaded paws.
" 'Balloondies Balloonderwear'," she read. " 'Size: Small. Get your balloony kicks with this special pair of blow-up balloon panties. Wear alone, over your regular underwear, or under your clothing for an even tighter fit. For best results, put on your Balloondies before inflating. Do not overinflate. Use cold air only to inflate.' " 
She looked briefly at the rest of the packages in Tommy's hands, then peered into the treasure box. Steven ducked down as she once again scanned the dump. Was it his imagination, or did her eyes linger ever so slightly on his hiding spot at the top of the ridge? If she'd spotted him, she gave no indication as she opened the box in her hand and pulled out a floppy mass of bright, candy red rubber. She shook the folded "Balloondies" open and examined them. They looked like a regular pair of plastic pants, big and baggy, except for the balloon-like neck plugged with a hard-plastic plug situated right in the middle.
Tommy watched her intently, his ears forward and alert, his tail motionless behind him. Tammy seemed to notice and she grinned.
"Does Mommy's little boy want to wear some special panties?" She crooned, holding the red rubber underwear up in display.
Tommy nodded. "Yes, please, Mommy."
"Tell Mommy how come." Tammy urged.
Tommy's whole stance and attitude changed. His muzzle dropped as he looked at his feet. His legs went slightly bowlegged and the toes of his sneakers turned inward. His tail drooped.
" 'Cuz my pee-pee's all pokey, Mommy!" He whined like a toddler.
"Oh?" Tammy feigned surprise. "Where's your pee-pee all pokey?"
Tommy dropped the packages he was holding and his thumb went up to his muzzle. "Pee-pee aww pokey in my diapew," he said from around the digit.
"That's right, little one," Tammy cooed. "Little boys' pee-pees are supposed to be pokey in their diapies so they can make their pee-pee messies where they make their wetsies! Right?"
"Mhm," Tommy answered.
"That's right. Now off with your shorts for Mommy."
Tommy unsnapped the waist of his shorts, slid them down his legs, and stepped out of them; leaving him standing out in the open in just his thick diaper and babyish plastic panties. Tammy bent down and held the balloon panties open for him to step into, one leg at a time. She pulled them up over his diaper and baby pants, feeding his tail through the tailhole in the back, and letting the waistband snap against his back. She left the balloon neck dangling at the front of his crotch like a red rubber wiener. 
The wolf boy whined when Tammy retrieved his shorts and helped him put those on as well, but she quickly shushed him by reminding him that they would blow up even tighter under his clothes.
"It's a good thing your pants have a button fly," she said as she fed the rubber neck through the opening in the front of his shorts. "A zipper might have popped your special panties."
After checking that everything was situated properly, she got down on her knees in the dirt and pulled the plastic plug from the neck of the pants.
"Are you sure you want Mommy to blow up your special panties?" She teased. 
"Yes, pwease, Mommy," Tommy practically moaned. "Pwease bwow up my bawwoon panties."
Hiding up on the ridge, Steven whispered his own affirmations. "Yes. Yes. Yes! Oh, gods, yes!"
Tammy's chest swelled as she took a deep breath, her breasts sticking out proudly, the outline of her hard nipples clearly visible against her tank top. Steven was certain that her gaze flicked right to him in his hiding place as she wrapped her lips around the red rubber nozzle.
Pfffffffffffff...
The strange balloon pants squeaked beneath Tommy's shorts as his big sister blew into them. The wolf boy moaned and panted as his shorts began to expand.
Pfffffffffffff...
The loose crotch of Tommy's baggy shorts tightened and swelled, pushing his legs apart and making him adjust his stance.
Pfffffffffffff...
The rear of his shorts, cut full and loose to make room for his diaper, bulged outwards.
Pfffffffffffff...
Unable to expand any longer due to the constriction of his shorts, the balloon pants squeaked even louder as they bulged from around the top of the boy's waistband and the bottom of his leg cuffs.
"Hnnngggg..." He moaned. "T-Tammy... Mommy... st-stop... I'm gonna... Aahhhhng!"
"Gonna what?" Tammy asked with a mischievous grin, pinching the rubber neck momentarily between her fingers and squeezing the boy's inflated crotch before taking another deep breath and blowing it into the nozzle.
Pfffffffffffff...
The red latex of the strange pants ballooned shiny and transparent at Tommy's waist and legs with many creaks and squeaks.
Up on the ridge, Steven's wiener throbbed in his own plastic pants.
"Aaahhh..." Tommy breathed. "M-om-my! I-I'm gonna... I'm gonna... aaahhhhh!"
Pfffffffffffff...
What!? Steven wondered crazily. What was Tommy gonna...
"Aaaaaahhhhhh!" Tommy suddenly cried out, his hips bucking as the bright red rubber swelled even larger and tighter around his waist and legs. "Aaaaaahhhhhhnnnn! Moooommmmmyyyyyy!" His tail stuck out stiffly behind him. His legs, spread wide and bent at the knees, trembled.
"Good boy!" Tammy crooned, snapping the plastic plug into place at the nozzle's rounded lip. She left it protruding, half inflated, from the fly of her brother's shorts and climbed to her feet.
Panting, Tommy fumbled for the neck and the plastic plug keeping the balloon panties inflated tightly beneath his shorts. Tammy slapped his hands away.
"Unh unh!" She admonished. "You had your fun. Now it's my turn. It makes me hot to think of you squeaking home like that. Now pick up all the toys you spilled and lets figure out how to get this box of awesome out of here."
Still panting, Tommy moaned and grunted as he tried to move in his puffy shorts. The latex panties - swollen and ballooned out bright-and-glistening transparent red around his waist and the legs of his shorts - squeaked every time he took a waddling, bowlegged step, and creaked noisily every time he bent over to retrieve one of the dropped boxes or packages.
Tammy, meanwhile, had dug up the remains of an old tarp and was using her stick to lever the box up onto it. When Tommy had finished retrieving the toys and returning them to the rest of the treasures, he and Tammy had a quick, whispered conference that Steven failed to hear from up on the ridge. Their conversation finished, they struggled the box onto the tarp - tearing both in several places in the process - before each grabbing one corner of the tarp and dragging the box away to the dirt road on the opposite side of the dump from Steven's ridge. 
Heart pounding and head spinning, Steven watched them as they climbed up the dirt road and rounded a corner. Though he kept still and listening for them until the noises they made - footsteps, panting from exertion, and the squeaking and creaking of Tommy's balloon pants - faded into the distance, inside he was dancing. Obviously unknown to the wolf siblings, their efforts had torn the box too wide in one corner, and as they dragged it over bumps and stones packages were jostling and slipping out onto the dirt. Packages that, if Tommy's reaction were any indication, had to be absolutely amazing.
When he was certain he could no longer hear them, Steven half-ran, half-slid down the other side of the ridge into the dump. He bounded for the closest package - a clear plastic bag with a cardboard insert. Scooping it up in his paws, he saw that it was a large package of plastic panties.
The Furber Baby, a drawing of a happy little bear cub's face, peered at him from the cardboard insert. "Furber SpecialCare Vinyl Pants," it read, "pull-on. Waterproof soft sturdy vinyl - stays soft even after repeated washings. Provides extra measure of protection when used over cloth or disposable diapers. 12 Pack." On the outside of the package, a sticker in the shape of puffy, plastic panties bore the legend "XXS 35 - 50 lbs." 
Flipping the package over, a listing of bullet points read "* Waterproof soft sturdy vinyl - stays soft even after repeated washings. * Durable sealed seams. *Nylon covered elastic leg and waistband for maximum comfort. *Full cut permits baby to move about freely and comfortably *Proportioned for proper fit over bulky diapers" A multi-colored chart showed the sizes available to fit weight, height, waist, and hips, starting at 3T (32-35 lbs. / 34-38 in. High) and going up from XXS to 4XL (Waist 47-58 in. / Leg 27-31"). Another drawing of the Furber Baby sat atop the words "Furber has been caring for babies for over 75 years. That is why we are the name mothers trust when it comes to their babies. Now, with our SpecialCare line, we bring that same care and commitment to the incontinence and special needs communities." At the bottom of the insert, fine print read "100% Vinyl Baby Pants. Easy Care: Machine wash warm. Do not use fabric softener. Use only non-chlorine bleach when needed. Line Dry. Do not iron. Distributed by Furber Childrenswear, Inc. AB/DL aware. Furber, Furber SpecialCare, and the Furber Baby Head are trademarks owned by Furber Products Company and are used with permission."
Two plastic snaps sealed the package shut over twelve pairs of shimmering, glossy, plastic panties in various colors and designs: two pairs of white; two pairs of baby pink; two pairs of white decorated in a pattern of soft, pastel hearts, cupcakes, candies, and ice-cream cones; two pairs of white with thin, pastel stripes in a repeating rainbow pattern; two pairs of white decorated with soft, pastel hearts; and two pairs in very light pink decorated with darker pink hearts, flowers, butterflies, and ladybugs.
Steven's heart skipped a beat and his stiffy pulsed in his baby pants. According to the size chart, these would fit him perfectly. The fact that they were obviously for girls sent him briefly into a fantasy of having an obvious diaper bulge beneath his shorts, and a teen girl like Tammy seeing his girly plastic panties sticking out of his waistband.
"Uh oh," she would say, "some little girl still needs her diapies..."
The bunny boy shuddered in pleasure, gripping the package tightly, before shaking himself back to reality - there were still more fallen packages to collect.
The next was several yards away toward the exit road taken by the wolf siblings. The fallen package lay in the dust and dirt just at the base of the hill, and Steven bounded over to it, scooping it up to see what it was. He was only slightly disappointed to find that it was a simple, small, yellow, accordion-style foot pump with a short blue hose - while it wasn't one of the amazing treasures his whirring mind was imagining, it would still be useful, if only for the small pack of balloons he had at home.
Looking further up the road, his heart leapt. The road cut a winding path up a deep rise out of the dump toward an old barn and an even older road that was now so unused and overgrown it was little more than a path through the grass and into the woods. Steep hills covered in trees rose up sharply on either side of it. Most of the way up the rise, where the road curved around a large, old oak tree, a small white box, decorated in bright pink, sat lost and forgotten in the drag marks through the dirt.
Steven ran to it as fast as he could, his footfalls kicking up clouds of dust behind him. It couldn't be, could it? Was it? It was! With trembling paws, he picked up the box and breathed the words written on it, "Balloondies Balloonderwear. Size Small." He quickly fumbled the box open and shook out the baby-pink latex panties into his hands.
Inside his plastic panties, the good feeling of Steven's stiff wiener reached a height he'd never felt before. He stood still, clutching the balloon pants tightly, as he struggled with the feelings in his crotch, his chest, and the thoughts in his head. He looked around, checking that he was alone and that he couldn't be seen from the dump, and then he decided.
Setting the package of Furber panties and the foot pump on the ground, he nervously unbuttoned his shorts and slid them down his slim legs, leaving himself standing out in the open in only his t-shirt, his plastic baby panties, and his socks and sneakers.
Just like a toddler, he thought, which sent another shock of pleasure through his stiffy and up his spine.
He fished the plastic plug out of the rubber neck of the balloon panties, and carefully pulled them on with the nozzle in the front, just like Tammy had done with her younger brother. The latex slid easily over his legs and up over his plastic panties, and though they were slightly loose and baggy, they still wrapped tightly around his hips as he reached behind himself to wiggle his poofy tail through the tailhole. All the while, he imagined Tammy doing it all for him.
Ooooo! She would coo. Mommy's baby bunny has a pokey pee-pee in his baby panties! Mommy will blow up baby's special balloon panties to make his wee-wee feel all good!
He reached down and tore open the package of the foot pump. Fitting the air hose to the inflation port, he plunged it into the pink latex neck of his Balloondies, stretching the rubber neck around the hose to create an air tight seal.
Does baby bunny want Mommy to blow up his special panties? The Tammy in his head asked.
"Y-Yes, pwease, Mommy," he whispered, mimicking Tommy's response. "Pwease bwow up my bawwoon panties!"
He squeezed the pump between his two paws and moaned out loud as air rushed through the hose and into the inflatable pants cradling his groin.
Whooosssssshhhh...
The pants began to fill with air and he squeezed again.
Whooosssssshhhh...
They tightened up all around him, wrapping his plastic pants around his wiener and pressing it up against him..
Whooosssssshhhh...
The balloon pants squeaked against his waist and thighs as they swelled outward and upward and downward.
Whooosssssshhhh...
Steven closed his eyes and continued pumping as the balloon panties expanded - riding up higher on his waist, growing out past his bunny tail, pushing his legs apart until he was forced to stand bowlegged and bent kneed the way Tommy had.
Whooosssssshhhh...
The pleasure on his pokey pee-pee was the most intense he'd ever felt.
"See?" Tammy's voice suddenly sounded in front of him. "I told you someone else was in the dump with us. And from the looks of it, he's a lot like you."
Steven's eyes snapped open and he froze, terrified - both at being surprised, and at being caught doing what he was doing. Tammy stood before him with a triumphant grin on her muzzle. 
"I know you from the bus," Tammy said to the rabbit boy. "Steven Shaw, right?"
Steven dropped the foot pump and it fell to the road, pulling the hose from the rubber neck of the panties. Air rushed noisily out of them with the loud, farting noise of a deflating balloon.
Pblblblblblblblblblblblblbl...
He would have found it funny if he hadn't been so scared. What were they going to do to him? Make fun of him? Beat him up? Or worst of all, tell on him or tell others about what they'd caught him doing? Tears welled up in his eyes and his ears drooped sadly.
"Aww," Tammy cooed. "Ssshhhh... It's okay... We won't tell anybody. It's okay. Don't cry. Just look at that goofy wolf behind you! He doesn't have room to say anything to anybody."
Steven turned to look. Tommy stood behind him, looking slightly confused and a little frightened himself. His own pants were swollen like a beach ball, with his red balloon panties still billowing out over his waistband and around the leg openings of his shorts. He gave Steven a nervous smile and Steven couldn't help but give a shy smile in return, his ears perking up ever so slightly.
"See there?" Tammy said. She sniffed several times, her wet nose pulsing, her tail swishing lazily from side to side. "I don't think I need to ask why you're here," she said. "What do you smell, Tommy?"
Tommy sniffed the air himself before answering, "Balloons, for one thing. Plastic. Old pee?" He sniffed again and nodded. "You. Bunny. Fear.  And something... I'm not sure."
"Horny." Tammy stated. "What you're smelling is 'horny'. Boy horny. That's what you smell like almost all the time."
"Do not!" Tommy protested.
"Do so," Tammy responded. 
"Well I smell girl horny, too!" The wolf boy said defiantly. 
Tammy grinned but ignored him. "We were watching you, Steven," she said to the young rabbit. "Just the way you were watching us from on top of the hill. Did you like what you saw?"
Steven didn't know how to respond. Should he lie? Say he hadn't seen anything? Should he tell the truth?
"You know all us canids can smell when people lie," Tammy said.
Could they? He wasn't sure that was true, but they could smell everything else about him; even the smell of old, dried pee inside his plastic panties.
He nodded shyly.
"I'm sorry," he said softly. "I didn't mean to. I just..."
"Shhhh," she interrupted. "It's okay. I don't mind. Neither does Tommy. Sometimes people watching makes it that much more fun. Did you like watching?"
Steven nodded.
"Did it make your pee-pee get all pokey in your baby pants?"
Steven hesitated, then nodded again.
"You like your baby pants, don't you?" She asked, looking down at the package of plastic pants he'd been carrying. "Little girl baby pants?"
Steven nodded.
"And you like your diapers?"
"I don't have any," Steven replied.
"No?" Tammy asked. "That's too bad. Would you like to wear diapers?"
Steven hesitated again, then nodded.
"You would?" She asked, her voice taking on the same tone she'd used with Tommy earlier. "You'd like to wear diapies under your plastic baby panties and be Mommy's special little girl baby bunny?"
The good feelings were back in an instant, stronger than ever, and Steven's wiener started stiffening again inside his plastic pants. He nodded, more eagerly this time.
Tammy's nose flared, and her tail wagging increased. Steven could see her nipples harden and press against her tank top. "Sweet little baby bunny Stevie," she crooned, "or maybe that should be 'Sweet little baby girl bunny Stephie,' wearing her diapies and baby panties. Do you like balloons, Baby Bunny? And blow-up toys? Do you like putting them against your pokey little pee-pee and bouncing on them?"
Steven nodded again, his eyes wide.
"Last question," Tammy said softly. "Does Mommy's special baby bunny girl want Mommy to blow up her special panties?"
Steven froze all over again. He had never wanted anything more in his life, but he was terrified.
"Just say 'yes'," Tommy advised. "It's the best thing ever."
That decided it for him. "Y-Yes, please, M-Mommy," he stammered.
"Tell Mommy how come." Tammy urged.
Steven knew what she wanted him to say from watching the two of them earlier. " 'Cuz my pee-pee's all pokey, Mommy!"
"Oh?" Tammy asked. "Where's your pee-pee all pokey?"
Steven stuck his thumb in his muzzle. "Pee-pee all pokey in my diapew," he said.
"That's right, baby bunny," Tammy cooed. "Little special girls' pee-pees are supposed to be pokey in their diapies. We'll just have to get you some!"
Tammy approached the bunny boy gently and got down on her knees in the dirt.
"Are you sure you want Mommy to blow up your special panties?" She asked softly, grabbing the pink rubber neck between her fingers. 
"Yes, pwease, Mommy," Steven breathed. "Pwease bwow up my bawwoon panties."
Tammy's chest swelled as she took a deep breath, her breasts sticking out proudly, the outline of her hard nipples clearly visible against her tank top. She wrapped her lips around the pink nozzle, and blew.
Pfffffffffffff...
Steven's balloon pants began to fill with air, but Tammy's hot, moist breath filling them was much more intense than using the pump.
Pfffffffffffff...
They tightened up all around him, pressing his wiener up against him, and wrapping his plastic panties around it.
Pfffffffffffff...
The balloon pants squeaked against his waist and thighs as they swelled outward and upward and downward.
Pfffffffffffff...
Steven closed his eyes as the balloon panties expanded - riding up higher on his waist, growing out past his bunny tail, pushing his legs apart until he was forced to stand bowlegged and bent kneed the way Tommy had.
Pfffffffffffff...
The balloon panties stretched out around his waist and legs, bright, shiny pink.
Pfffffffffffff...
All of a sudden, the good feeling in his pee-pee felt better than it ever had before. It shot through his wiener and throughout his body. He stiffened and shuddered, feeling the most intense pleasure he ever had in his life. It blasted across his brain and made him weak in the knees.
"Nnnnnnnn!" He breathed, before panting and wobbling on his feet.
"There he goes," Tommy said softly.
Her lips still wrapped around the nozzle, Tammy's strong hands held him steady as she blew one last, big breath into his balloon panties, making them round and tight and squeaky.
Pfffffffffffff...
"Aaaaaahhhhhh!" Steven breathed. The pleasure was too much. Too intense. So strong it was almost painful.
"Good baby bunny!" Tammy crooned, taking the plastic plug from Steven's unresisting fingers and snapping it into place at the nozzle's rounded lip. "Good Baby Stephie. Was that your first time?"
Steven wasn't sure what she meant, but it was definitely the first time for almost everything that had happened today, so he nodded.
"Nnnff!" Tommy said. "Now I'm all pokey in my diaper." His red balloon pants started squeaking rhythmically as he began pushing and rubbing at the front of his crotch.
Tammy ignored him as she held the younger bunny. "Do you like playing with Mommy?" She asked, looking up at him.
"Yes, Mommy," Steven breathed, not even needing to think twice.
"Do you need to go home soon?"
"Nuh-unh."
"Do you want to come back to Mommy's house and play more and be Mommy's special little baby girl bunny? Then Mommy will have two little ones in diapers, her diapered puppy and her baby bunny, and she'll make sure to always make their little pee-pees feel good when they get all pokey in their diapies. Tommy won't mind sharing his balloons and blow-up toys with a new baby sister, would you Tommy?"
Tommy didn't pause pushing at his own balloon pants as he panted, "N-no, M-Mommy. I... haaaaaa... I don't... mmmmmmm... mind... aaaahhhhnnnn..."
"See there?" She said to Steven. "Do you wanna come over to our house and be our special playmate?"
Steven didn't even need a second to think about it. He looked at his new "big brother" - vigorously pawing at his balloon-covered, diapered crotch - and grinned broadly. "Yes, please, Mommy!"
"Good girl!" The wolf girl smiled at him. "Pick up your pretty plastic panties while we wait for your big brother to finish, then you can help us take the treasure box home."
When she stood and held out her paw for him to hold, just like a mother and her toddler, Steven didn't hesitate in taking it.