Senior Project
A teen pup is made an unwitting subject of his babysitter's TF senior project!
The SUV pulled out of the school annex, Ruddie bouncing in the back seat as it thumped onto the main road.
"Now, I need you to be on your best behavior..."
"I know, Mom..."
"... because we're not going to have good cell reception until Monday morning..."
"Yeah, I know Mom..."
"... and so we're going to be out-of-touch for the whole weekend. If you get into trouble, you're going to be all on your own until then, Ruddie."
The question "When have I ever gotten into THAT much trouble?" was the first thing to pop into his head, but Ruddie stopped himself before he asked it Truth was, he HAD been in that much trouble before -- the teen's habit for exploring and love of the off-limits had landed him in hot water before, and he wasn't exactly sure if his mom was still mad at him for last time.
Ruddie put his head in his hand and rested it against the window. He shifted on his seat, which was covered with one of their gazillion beach towels. "I won't get into trouble, Mom. Nobody wanted to do anything this weekend, anyways. I'm probably just gonna watch Netflix with Astrid the whole time."
"Well..." his mom started, then paused as she navigated a merge on the narrowing street. "Just make sure that whatever you're watching is age-appropriate."
"Aw, come on..."
His mom turned her head emphatically to the back seats, keeping one-and-a-half eyes on the road. She was a red husky, just like him, but with a different pattern on her fur. "Your parents being out-of town is not an invitation for you to act like a little hooligan, Ruddie. Remember what that poster said? Character is who you are when nobody is watching you."
"But isn't Astrid going to be watching me?"
His seatbelt dug into his shoulder as he popped into the air, his mother pulling into the driveway at the perfect angle to maximize the bounce of the car's right half. Ruddie grunted, and pouted at the back of his mom's turning head. She unbuckled her seat belt.
"Alright, smart aleck, out you get. Just remember -- I'm nowhere near as tech-illiterate as your father. I know what button checks the web history."
Ruddie paid his mom no mind, clicking the seat belt and letting it whip back into the wall. He opened the sliding door and slid off his seat, pulling his duffel bag with him, and made his way around the back of the car. He could already hear the happy tone his dad used when he talked to other grown-ups.
Rounding the corner, he saw that Astrid was already here. His babysitter for the second year running, even though he always told his parents he didn't need a babysitter at his age. Astrid was a gray kobold and high-school senior, with a curvy frame and thin-rimmed glasses. She bounced on the balls of her feet, like she always did, as she talked to his father, holding her fancy white purse behind her back.
Ruddie's dad -- a wolf with his same fur pattern -- turned to him with raised ears and a broad smile on his face. He closed the distance quickly, bending down and ruffling Ruddie's wet head. "There's my big man! Did you show 'em who's boss out there? Did you get some big tackles and cinch the game?"
Ruddie cracked a smile, pushing away at his dad's ruffling hand. "Psh, yeah, Dad. You know how crazy things get at water polo practice."
"I do! You know, when I was back in high school, I was as big as two of the other guys put together! The goalies had to swim from one of my hands to the other! I-"
"Dear," his mom interrupted, putting a hand on her husband's shoulder. "The plane is going to take off, with or without us."
"Right, right, right-right-right..."
Ruddie's dad moved back over to Astrid and pulled out his wallet, handing her a quite-thick stack of cash. Ruddie caught his dad say something about "extra for the trouble" and "a little extra, for a pizza or a movie."
Both Ruddie's parents piled into his dad's car and rolled their windows down. They started to pull out of the driveway, his dad running through an identical spiel to his mom as they slowly pulled out to the street. His mom waved a thank-you to Astrid as the car turned down the well-paved road, and soon the both of them disappeared in a highway-bound direction.
Ruddie yawned as they rounded the corner, fatigued from hours of non-stop swimming. He shifted his duffel bag's strap on his shoulder, only to feel it lifted up off of him. Turning, he found Astrid standing behind him, bouncing as usual, a helpful smile on her stubby snout, holding the bag in her hands.
Ruddie sighed and rolled his eyes. "Astrid, I don't need you to carry my stuff for me. It's not even heavy."
Astrid giggled in her high-pitched voice. The sound was so pleasant that Ruddie couldn't help but like it. "Oh, my mistake, Mister Strong Man..."
She brought around her long, thin tail and poked him on the snout. Ruddie snorted and shooed it away -- tail-touching was something that all of the girls at his school were doing, too. His friends thought it was cute, but he thought it was... whatever.
Before he could inform Astrid just how "whatever" it was, she held out her arms and dropped the duffle bag on his head. It didn't hurt at all -- because, as established, it wasn't heavy for him -- but it stuffed the words right back in his mouth and sent Astrid into another giggle.
"... then I'll let you carry it all by yourself!"
Ruddie pulled the bag off of him and strapped it around his shoulder, un-ruffling his hair in the process. He liked to go back and forth with Astrid, but the fatigue was just a little too much today. Maybe after a shower... and some pizza.
The two turned and walked in the house's front door together. Like every other house in the neighborhood, theirs was a three-story house with a tiny top floor, which Ruddy's mom chose to use as a home office. They walked in and Ruddie wiped his paws on the placemat before stepping onto the hardwood floor, Astrid closing the door behind him.
Astrid reminded Ruddie of one of those butler-type characters from older cartoons. She had this stop-and-start bounce whenever she did something, and she was always holding doors, carrying things, and paying for stuff without being asked. Adults probably liked that sort of thing, but Ruddie didn't need it. He wasn't a kid anymore.
Ruddie started forwards, heading past the living room and up towards his second-floor room. "I gotta take a shower real quick. Mom says we can watch Netflix, but we she's gonna check if we watch any stuff with killing, or sex, or anything fun."
"D'aww, bummer. Did she say the thing about the poster again?"
Ruddie huffed an affirmative. Out of nowhere, Astrid's tail came and bopped him on the nose yet again. Ruddie covered his muzzle and whapped his head against her side, grunting his annoyance.
"Oh, don't be so grumpy, Mister Man. Take a look..."
Ruddie turned to Astrid, who rummaged around in her purse. She pulled out a box with a scarred wolf's face on it, the box art lined with zombified animals in fancy, streamlined poses.
"Throne of the Dead?!"
Astrid nodded, and Ruddie took the box into his hands. The hottest gritty fantasy zombie-apocalypse show of the last year, with so many battles and sex scenes that even some adults couldn't handle it. Ruddie even heard that they used real blood for special effects! His mom wouldn't let him watch it in a million years.
Before his brain could take it all in, Astrid took the box from his hands, spun him around, and pushed him up towards the steps. "Lucky for us, DVD players don't have a watch history. Go on now, and get yourself clean. And don't say I never did anything for you."
Ruddie hugged around Astrid's waist, surprising the kobold, before bounding up the steps. He got into his room, closed the door, and locked it -- not for any particular reason, but just because that's what he always did nowadays. He quickly tugged off his swim gear and threw his duffle bag beside his messy bed, hopping into the bathroom attached to his bedroom.
In record time, he was naked and in the shower. He had intended to rush his way downstairs, but the amazing sensation of warm water rushing over his fur, carrying off the chlorine and sweat managed to slow him down. Maybe a long shower wouldn't be too bad -- after all, they had the whole weekend.
Ruddie laid down on the shower floor, letting the broad showerhead soak the entirety of his frontside. He stretched this way and that, letting the heat soak into his muscles and bones, and his head began to wander. He thought about practice, about the stuff he and his friends had talked about in class, and about the DVDs downstairs. He kept his eyes closed and smiled to himself, but a feeling on his lap drew an eyelid open.
His canine cock had come out from its sheath, bobbing in the shower water. Ruddie grunted as he lifted his head up off the floor, resting it against the side of the tub as he freed up one of his hands. He'd been getting erections constantly over the last month, and his thoughts were drifting more and more towards the girls in his class. The outgoing, popular girls... the cute, quiet girls... he couldn't help but reach down and nurse his erection as he thought about them. He imagined what it would be like to touch them... to kiss them... to have sex with them...
Ruddie groaned as the images started to flash in his head. It felt weird to rub himself when his parents weren't home, but when Astrid was. It felt kind of wrong, which made it feel more exciting...
Ruddie huffed. Astrid. She was cute, for a kobold, with her curves and her glasses. Once, Ruddie had watched porn where the guy seduced his babysitter, and he had imagined himself doing the same to Astrid. If she didn't tell, could they get away with it? Gods, what if she did tell? What if they still did it after that?
Ruddie groaned as he tried to restrain himself, slowing the pace of his strokes. He couldn't jerk off to thoughts of Astrid and then go watch a bunch of TV with her... that would be super awkward. He tried to bring his thoughts back to the girls at his school, or even to the cocker spaniel coach's assistant on the water polo team, but it felt weird to keep going.
He released his full-mast cock, quietly panting to himself. There would be time to masturbate later that night. Yeah, after he'd seen all those sex scenes from Throne of the Dead. He could usually fit in two jerk-off sessions a day, but he felt a little strange right this moment. As good as the hot water felt, he felt like it was hitting more of him, somehow. Had he had another growth spurt since yesterday?
Sighing, Ruddie got to his feet, being careful not to whip his cock around in the process. He got back on stable footing and actually took his shower, scrubbing his fur clean of the swim pool and his own perspiration, before shaking himself dry and towelling off the rest of the way. His erection had somewhat subsided by the time he got back into his room, and he tucked his half-mast into a fresh pair of underwear. He donned a t-shirt and sweatpants before plodding downstairs.
Astrid had already set up the DVD by the time he reached the living room, and was ordering a pizza for delivery. She knew his tastes by now, and especially what he liked to eat after practice -- loads of cheese and meat, meat, meat. Ruddie vaulted the back of the couch, taking the better side for himself, and quickly monopolized the space with a broad, lazy sprawl. He laid there, watching the looping menu animation of a wolf cutting down naked zombie women with a broadsword. Occasionally he glanced at Astrid as she ordered in her bubbly voice, noting that every so often she tucked her tail tip into her purse. Ruddie paid it no mind; he didn't even know what purses were for, really.
Ruddie threw up a pillow between the two of them just as Astrid finished her call and fell backwards onto the couch, laying out just as sprawlingly as he did. They pushed at one another through the pillow, play-fighting over the middle of the couch, before Ruddie put his full weight into it and easily won the space from Astrid. Even though he thought he was ready for it, Astrid was still able to hop her hips in his direction and poke him in the nose with her tail in revenge.
Couch matters settled, Astrid handed him the remote and he started the first episode of the first season. The episodes were an hour each, and each season had nine episodes, meaning they would have enough to watch for the whole weekend. The first episode was bombastic, gruesome, and lewd, the first sex scene coming not ten minutes in -- and between siblings, no less! It wasn't as glamorous or coordinated as the videos Ruddie had watched, but his wide child-eyes took in everything.
The teen was so enthralled by the bombast on-screen that he barely registered the doorbell ringing with the pizza. He only noticed when a soda can and a paper plate holding a pair of slices were slid onto the table in front of him. The pup flinched instinctively to cover his nose as he saw Astrid's tail rise up for attack, thwarting it before it could land. She giggled, patted him on the head, and settled back into her slightly-less-than-half of the couch.
They paused only briefly, Ruddie asking a lot of half-confused questions before episode two, but otherwise spent three solid hours knocking out episodes. They gasped, they laughed, and Ruddie squirmed a bit more than he liked to admit. Astrid explained that she had already seen most of the episodes when they aired live, and so she split her time between her phone, re-watching her favorite parts, and finding little ways to bug Ruddie with her tail. The teen avoided eye contact with his babysitter when the sex scenes played out, but couldn't help but keep his eyes glued to the screen as the made-for-TV nudity played out in its full glory for his young eyes.
By the time episode three closed out, Rudy was starting to fidget. He had been sitting a long while, and was finally starting to feel the soreness from practice that day. Plus, his clothes were -- not exactly itchy, but they felt tight. His shirt and socks specifically. Maybe he'd been too distracted in the shower to wash out the chlorine properly? In any case, he took a brief break to head up to his room before episode four.
He threw off his shirt and socks, rummaging around for a looser set of clothes. The strange thing was, he was having trouble getting into anything -- shirt after shirt felt a bit too tight, and he couldn't quite flex his footpaws in any of his socks. It was a bit weird, but Ruddie didn't think too much about it -- he must have been right about that growth spurt. Instead, he wrapped a towel around his neck and came downstairs barefoot.
His body caught Astrid's gaze, pulling it up off her phone. She smiled wryly at him with lidded eyes, making the teen want to fidget. "When you said you were going to change, I didn't think you meant into your birthday suit."
There was something weird in her tone, but Ruddie shook his head. Everything was a little bit weird tonight. "My fur feels itchy. I think I need to take an extra shower some time before bed. Anyways, let's watch one more."
Astrid giggled. "Just one? Big bad Ruddie doesn't want to pull an all-nighter on his first weekend with his parents out of town?"
Scoffing, Ruddie flopped back down onto the couch, stretching his legs out and sliding them underneath the coffee table in front of them. "Maybe if I just did stuff on my phone all day like you nerdy types. But I'm out getting huge." He flexed his arms to make a point, the toned muscle making an actually-impressive flex beneath his fur.
Strangely, Astrid didn't quip back at that. She continued to look at him with that lidded gaze, her tailtip twitching as it rested on the coffee table. Ruddie sighed, his charisma going once again unappreciated, and started up episode four.
The episode was hard to watch, and not just because of what the protagonist had to do to escape the zombies. The muscles in Ruddie's arms and legs kept pulling little twitches, making him fidget on his end of the couch. His tail felt stiff, and he constantly wanted to lean forward and just wag it until the feeling went away. By the end of the night, even his sweatpants had begun to feel tight on him, which confused him utterly. Surely he wasn't having a growth spurt over a single hour? For once, he was glad that there were no sex scenes in this episode. If he popped a boner in this state, it would be impossible to hide.
Astrid, on the other hand, was really into the episode, mostly the kobold warrior who started popping up in important scenes. He was the servant of a dragon queen, and he was totally uncool about it. He did whatever she said, all the time, even when it was clearly the dumb thing to do in that situation. Still, Ruddie couldn't hold it entirely against him -- if he had a big dragon lady who was that stacked ordering him around, he'd probably start thinking with his pants, too.
Ruddie breathed a sigh of relief as the episode came to an end, finally able to stand, stretch, and walk about without it seeming weird. He scratched at his belly and yawned out loud, the sodas Astrid had brought for him doing nothing to keep his swim-sore body awake. He and Astrid discussed the show briefly, Ruddie giving it a glowing reccomendation based on the first four episodes, as they had been full ofbackstabbing, zombie murder, and full frontal nudity. Astrid giggled and told him to expect even more going forwards, which got Ruddie's stiff tail wagging. Quickly, though, it thumped into a table that was standing next to him, making him grunt and recoil away. He was sure he had been standing far enough away to avoid it... son of a bitch, was his tail getting longer, too?
Grumbling to himself, Ruddie began to make for his room. Astrid bid him goodnight and took full control of the couch, draping herself across it like in true reptilian fashion, siphoning the heat from where Ruddie had sit. He heard her dial his parents and leave a voicemail that everything was going alright, and that Ruddie was on his best behavior. As he closed his bedroom door behind himself, Ruddie leaned against it and smiled. As nerdy, bubbly, and annoying as she could be, Astrid was... kinda cool, really. Nobody else treated him like she did. After he heard her hang up, Ruddie poked his head out, said good night to her, and locked his bedroom door.
Stripping nude, Ruddie bounced onto his messy bed. It felt good to finally be out of his clothes, and he stretched himself to his heart's content, groaning out in relief as the soreness and stiffness started to fade from his muscles. He collapsed back against his pillow, body at peace for the moment, and decided that it wasn't worth the trouble to take another shower.
His paw slowly went down towards his sheath, which he grabbed softly as he kneaded his balls. He had been with Astrid all night, and had to admit that he had been stealing glances at her. She didn't have massive breasts like that dragon queen, but she did have enough heft on her that Ruddie could imagine her body moving and quivering just like the female characters in the sex scenes from the show. Gods, he wished he had a girlfriend. The thought of pumping some girl full of his seed sounded heavenly right now. He started imagining himself just like the kobold from the show, serving some stacked queen and getting his dick rode as a reward for his loyalty.
He was tired, though. Between the fatigue in his groggy body and the urges of his cock to stroke and squeeze, the former slowly won out. He drifted off to sleep, bare-naked and beneath not a single sheet.
Two hours later, he was awake again. The feelings all over his body -- the restlessness, the muscle twitches, and the stiffness, were back in full force. What worse, he felt some sort of heat in his chest and stomach, like he had just drunk a steaming-hot coffee. He grumbled as he slowly worked his way upright. He really hoped nothing was happening to him -- his parents had specifically said to make this a normal weekend for him and Astrid.
He grunted. Astrid would know what to do. She was a nerd, and she was cool enough to keep quiet about all this. Mmf, Astrid. He thought of her and stroked his cock for a moment, which felt much harder than any morning wood he had ever had. Did he wake up from a wet dream? Grunting again, he found the nearest pair of underwear and, with quite a bit of difficulty, stuffed himself inside it.
Stumbling to the door, he opened it with a grip that felt unfamiliar. The knob and latch felt smaller -- he had to be imagining things. He could tell from the top of the stairs that the living room TV was still on, and he clumsily worked his way down the stairs. It was hard to keep his balance.
As he made his way into the living room, Astrid was still on the couch. She was laid out along its length facing away from the staircase, wearing a thin-fabric nightgown that left little to the imagination. As she heard the sounds of him approaching, she lowered her phone and rose to meet him. Ruddie's vision was still a bit blurry, but he thought he saw her smile.
"Ruddie? Are you okay? What's wrong?"
Ruddie groaned, making his way over to the couch. Astrid was quickly at his side, supporting his body and leading him along. Ruddie's nose twitched -- did Astrid smell different than before? No, Astrid's smell was the same, but something else smelled good. Something sweet...
"I feel funny... kinda hot... couldn't sleep."
Astrid helped Ruddie sit on the couch and recline, throwing a spare blanket over him from the coffee table drawer. She sat beside him and lowered both hands to his head. One rested across his forehead, normal for feeling his temperature, but the other stroked over the crown of his head, fingers sliding through his fur. He didn't know why she was doing that, but it felt really good.
"You do feel a bit warm. Here, I have some medicine in my purse. Can you sit up for me?"
A strange tone had entered Astrid's voice, but Ruddie's mind couldn't place it. He had definitely heard it before, and had some vague association with being embarrassed by it. His brain felt scrambled. He sat up per Astrid's instructions.
She pulled a bottle of grey liquid from her pack, unmarked and transparent. There was a bit missing; it wasn't quite full. As Astrid pulled it out Ruddie's nose caught a whiff of it. It was the sweet smell he had been picking up just now... Why did Astrid smell like medicine?
Before he could ponder it further, Astrid brought her fingers to his lips. She gently parted his mouth and tipped the bottle inside, filling Ruddie's mouth with the pleasant, sweet flavor. He gulped it down, instinctively at first, and then out of enjoyment for the sugary taste. It was like someone had liquified a piece of hard candy and stirred it into a drink.
After downing the bottle, Ruddie spent a moment feeling unchanged. Then, everything hit. The restlessness became full-on soreness, the twitches became full-on flexes, and he couldn't help but stretch against the overpowering stiffness. He groaned out, dissatisfaction constantly being worked in and out of his muscles, and he felt the shuffle of the carpet on the underside of his legs. Cracking an eye, he saw his legs growing before his very eyes! A... growth spurt?
"Astrid, I feel funny..."
Astrid tutted and placed a finger on his lips. Her taste and smell was just like the medicine's; Ruddie prodded and sniffed at it.
"Shhh, don't worry about that..."
Before Ruddie could ask anything, Astrid moved onto him. She raised her hips from his side and crossed a leg over his body, settling down onto his lap with her knees spread across him. Ruddie, in stunned silence, could only watch as Astrid raised up her nightgown, revealing two-toned gray scales on her belly and arms, and tossed the garment across the room. She was wearing nothing but her undergarments, which sat a pale pink atop her breasts and lap.
His babysitter's behavior was enough to scramble any sensical thought left in Ruddie's head, and he threw his head back and groaned as the feelings began to spread more quickly. The bottom of his feet touched the armrests at the other end of the couch, his tail became so long that it poke out of the gap between the cushions, and he could feel his hips and chest widening under Astrid's weight.
Primal instincts kicking in, Ruddie was at full hardness in moments, his erection pushing past his underwear and poking at the scales of Astrid's inner thigh. Astrid smiled wryly over her glasses, starting shifting her weight so that Ruddie's expanding cock started pressing against the linen-clad folds of her lips.
"Don't worry, Ruddie... boys like you feel their bodies changing all the time... it's perfectly natural..."
Somewhere in the back of Ruddie's head, he finally placed that strange tone of Astrid's. Video games, card games, arguments... that's what Astrid sounded like when she won.
Ruddie bucked involuntarily as a full half of his cock began peeking past his underwear. His balls, growing to match, were straining the fabric enclosing them, his now-massive hips putting strain on the waistband. He wanted to reach down and pull them off, but every time he moved to another muscle spasm would wrack his arms, he would buck impulsively, or Astrid would move herself to block his hands with her thighs.
Ruddie's skin was changing. Gone was the two-toned fur of his mother, replaced in patches by scales that knit his fur together into overlapping, miniature waves. His jaw was pushing out, snout becoming longer and lining with carnivorous rows of pointed teeth. His neck was pushing out, becoming longer, muscular, and flexible. His tail had gone from a small, wagging tuft to a full-on prehensile limb, thick at the base and as long as Astrid was tall.
And gods, his groin. The feeling of his expanding cock being straddled by Astrid's soft scales was shutting out anything else in the young male's brain. He wanted to buck, to pierce Astrid on its length and empty his fattening balls into her, but he lacked the bodily control to move so precisely. Instead, he spilled off of the couch, pushing the coffee table over with the bulk of his legs and feet, and spreading his legs wide on the hardwood floor.
Astrid, calm and domineering, rode his transition to the floor with serpentine grace. She remained straddled on his peeking cock, and began to rub herself against him, purring out low moans that filled Ruddie with a primal excitement. He could feel her breasts push into him inside her smooth nightwear, the entirety of her body soon fitting on just Ruddie's chest.
He couldn't take it. He began to grunt in low, primal tones, digging his claws into the couch and starting to hump up against Astrid's body. She giggled and laid into him, accentuating the weight on his cock, and silently urged him to continue. His expansion started to taper off, the dog now bigger than two of the couches he'd fallen from, and with a final rip his underwear was ripped open by his fat sack and turgid cock. Unclamped, he bellowed out a draconic roar and came onto his stomach. Astrid's inner thighs were painted white by the sheer volume of his transformation-enhanced orgasm, the remainder landing on Ruddie's stomach and chest. He squirted again, and again, and again, his mind going completely blank as it was flooded by pleasure beyond anything he'd ever achieved before. Unable to contain the immense sensation, he passed out as his orgasm tapered to a close.
When he came to, Ruddie could feel a collar around his neck, and his opening eyes traced a leash from its center to Astrid's hand. She was bowed over his passed-out form, licking the cum from his stomach in broad, hungry strokes. Gods, the sight of that turned Ruddie on so hard that he instantly began stiffening again.
Astrid, noticing his attention, rose from his chest and licked the cum off her lips. She leaned in and kissed his now-draconic snout, sliding her semen-tinged tongue past his lips and lapping against his broad, flat tongue. Ruddie found that he had, in general, control of his body now, and the first thing he did was close his arms around Astrid in a loving embrace and kiss her back. The kobold and her dragon stayed there, lips pressed messily together, until the painful hardness of Ruddie's cock made him break the kiss with a goran.
Astrid giggled as Ruddie pulled away, taking his hands in hers. "It seems my senior project is working without a hitch... Oh, Ruddie, you're so much more handsome now..."
Ruddie panted and nodded his head. He was willing to listen to anything Astrid told him at this point. He spoke, surprising himself with the deepness of his own voice. "Ah... Astrid... I'm so hard..."
Astrid tutted and kissed Ruddie's nose, bringing his claws up to her breasts. She placed one of his broad, powerful hands on each, and took up his leash in her free claw. "I know, Ruddie, I know. You're much better equipped to satisfy a woman of my appetites now... Here, let me show you how to treat your new girlfriend."
Girlfriend? Ruddie couldn't even process the idea before Astrid closed her thighs around Ruddie's shaft, moving her legs opposite one another to stroke it. Ruddie was immediately throbbing and drooling, the feeling of soft, tiny scales heavenly against his transformed dick.
"Get rid of my clothes, Ruddie."
Yes, yes. Gods, finally. He took his already-placed hands and flexed his fingers, bringing out his sharp, powerful claws. With only a hint of pressure he severed the fabric of her bra, revealing her breasts to him for the first time. They were colored the same gray as her outer scales, but the valley between them was kissed by the lighter shade that ran up her underbelly, and her nipples were a darker gray that her back.
Ruddie employed his unfamiliar tail next, sliding it back up on itself and delicately grabbing Astrid's panties with the barbs on its end. He tugged away from her, skewering the fabric and tearing it to shreds. Her vagina was revealed in its entirety, lips wet and quivering, while the tatters of her underwear scattered across the room.
"Good boy, Ruddie..." she cooed, reaching forward to pet his broad head. Just like before, the feeling was blissful -- he wagged his tail from side to side, and stomped one of his feet out of lingering canine instinct.
Astrid grinned and placed his hands back on her breasts, aligning her vent with the tip of his massive cock.
"Ready, Ruddie?"
Ruddie nodded emphatically, tongue lolling out of his mouth in brutish pleasure.
Astrid, not wasting a second, dropped herself onto Ruddie's cock. He howled in pleasure, gripping her breasts in his broad palms and thrusting up against her smaller body. She worked herself up off his length, dragging at the sensitive skin with her folds, and dropped herself again. He whined out and thrusted harder, his balls slapping the base of Astrid's tail.
The two locked together in a passionate, loving, primal rhythm. Ruddie's powerful body was Astrid's to command -- she guided his strong grip from her breasts to her stomach to her hips to her thighs, familiarizing Ruddie with every scale on her body. Astrid's sex clamped down and stroked Ruddie's dragonhood with maddening expertise, near-overloading the dragon's teenage brain with each protracted stroke upwards and electrifying him her drops.
Once Ruddie picked up on the rhythm Astrid wanted -- when to thrust, when to sit still, and when to squeeze with his hands -- she took up his collar and pulled it as hard as her kobold body could, tugging Ruddie into a French kiss. Their tongue lapped hungrily against one another as they swapped moans into each other's maws, Astrid's free arm wrapping up Ruddie's head and petting along its back.
Ruddie felt like he was in heaven. The feeling of Astrid on his cock, the sensation of feeling up a woman with his hands, the taste of Astrid slathered on the inside of his mouth... he never wanted it to end. Apparently Astrid didn't, either, as she slowed down his thrusting as she sensed him getting closer to orgasm. Ruddie tried to comply, he really did, but he could hardly control his own impulses, leaving Astrid with no chance.
With quick, short strokes and quick, short breaths, Ruddie plunged balls-deep into Astrid and let out a trumpeting roar of victory, his cock spasming from base to tip as his balls exploded into Astrid's insides. Astried moaned out shamelessly as she orgasmed along his cock, using the motion to milk him dry for every drop he could give. Just like his first ejaculation, this one drew on, and on, and on, until his cum was spilling out from Astrid's womb and coating his hips in the excess. He humped, he snarled, he bucked, and he pushed out every drop of cum he could, all before collapsing so heavily that it pushed the couch over behind him, leaving him sprawled out on the living room floor.
The kobold and her dragon laid there, panting, both utterly spent. Astrid was the first to recover, righting herself on Ruddie's chest while keeping his deflating shaft inside her. She wrangled his head close with the collar and planted a gentle, loving kiss on his lips, which Ruddie weakly returned in kind. His powerful arms came up and embraced her body, completely enveloping the kobold in his wide, heavy grip.
Astrid let her head rest against an un-splattered portion of Ruddie's chest, sighing contentedly and starting to drift away. She reached a hand up and lazily petted against Ruddie's snout, which the new dragon nuzzled into eagerly.
"Your parents are gone until Monday, right...?"