Rabbits Ch 01 Growth

Hi! This multi-part story is about two (sometimes more) gals with penises fucking each other silly while exploring various spells to enhance their activities. It's very straightforward smut with little to no story. I hope you like it!

ps. The main characters store their cum somewhere different from usual. You'll see! Feel free to imagine them with balls though, if you would prefer.

I opened my eyes, still feeling drowsy. Katie was sleeping on her side next to me, with the blanket leaving her gracefully arching back uncovered. I spent a moment taking in the beauty of her slim neck, long black hair and clearly defined shoulders. I thought back to the previous night. We had had so much fun. As I moved my gaze downwards, a different kind of appreciation took hold. I lifted the blanket a little to see the perfectly shaped round cheeks of her beautiful brown butt, with what I knew to be a delicious hole between them.

I reached down and softly grabbed one of her cheeks. She did not seem to react. I got an idea. I slowly turned onto my other side on the bed, and reached into the bedside table's drawer. I took out a rock we had used once before. It was gray and quite round and flat, and had beautifully carved runes around the edges. With a bit of reminiscing, I remembered how they read. I touched my dick with the stone, and whispered.

"benfede sanda dyide"

The rock glowed brightly for a moment, then dimmed. My cock instantly shrunk. I was semi-hard, but my shaft had become visibly smaller than usual.

Now it was time to get to work. I put the rock back, and rolled to face Katie's back again. I moved a finger into the valley between her cheeks, and touched her butthole. It felt warm. I started slowly circling the ring of muscles, a sensitive spot for her. Katie took in a shorter breath, then continued breathing calmly.

After a while I felt something moist on my finger. Katie's ass was lubing up. I carefully adjusted my position, and applied pressure to the center of the ring. My finger slid in with little resistance. Katie's ass was hot and slippery. I started slowly moving my finger back and forth, and Katie let out a breath that almost sounded like a moan. It didn't feel too tight yet, so I tried adding a second finger. It got a bit tighter, but there was also more lube now. I kept moving in and out, wondering if Katie was dreaming of being fucked in the ass. If not, I would soon make it happen. At this point my cock was rock hard, and I ached to put it in. I probably could have stuck it inside her well-trained butt right away, but that would definitely have woken her up. My newly smaller cock would be perfect for going in stealthily after a couple of fingers though.

Soon Katie's ass felt nice and stretched, so I carefully readjusted my position on the bed. With my fingers still in, I got my cock pointing between her ass cheeks. Once I had positioned myself, I pulled my fingers out for the last time, and then slowly swung on my side to push my cock inside. Katie let out a small moan. I stopped, which was hard because her asshole felt sublime. Wet, soft and hot, and just the right amount of tight.

I could not keep myself from moving for long, so I slowly pushed further in. I soon ran out of shaft, my cock barely reaching her prostate. Feeling the heat of her ass on my cock, I started humping her in agonizingly slow, long strokes. I knew each thrust was hitting Katie's prostate, because I could feel it swelling up, and her breathing was getting heavier. I rose up on my arm and took a peek at her front, marveling at her large breasts. Even though she had shot out so much cum last night, I could tell from the roundness that her tanks had already mostly filled up. She really had an incredible libido. Her cock was as hard as mine, and currently more impressive, with cum dripping from the head. I kept moving back and forth, with Katie letting out occasional moans. The friction felt amazing, and I could feel my orgasm approaching at a steady pace. I was way too turned on by the situation to last. I reached back and stuck a finger in my own ass.

Soon I made the last few strokes with my cock, hilting it as I was rocked by a nice, strong orgasm. I had trouble minimizing my shaking as pleasure crashed over me. It felt like I let out a lot of cum, but I knew that the amount was much smaller than usual.

As the orgasm passed and I calmed down, I could feel my cock starting to grow. I had already been hard, but now it felt like I was getting another erection! My shaft grew in length, and thickened considerably, stretching Katie's butthole. I could feel myself penetrate deeper, even though I wasn't moving. The change was serving to make me hornier, as I felt Katie's ass grow tighter on my cock.

Miraculously Katie was still sleeping, so I decided to go for a second round. With my new length I could reach deeper inside her with less effort. I lifted myself to take a peek while leisurely moving in and out, and saw that Katie's cock had leaked a considerable amount of pre onto the bed. Katie's prostate now felt large and spongy as my cock rubbed against it. I guessed that she would soon have a huge orgasm, awake or not. And indeed, a few moments later Katie started shaking. Her eyes were still tightly shut, but she let out a long, drawn out moan.

- "Aaaaaaaaaahhhhhh........ GGAaaaaaahhhhhhh...!"

- "Good morning cutie!" I replied cheerfully. I'm not sure Katie's overwhelmed brain even registered what I had said. Her cock's production had turned from a leak to a small stream, though still less than her production from a "normal" orgasm. Her whole body was tense as the pleasure slowly peaked, but refused to descend.

- "Aaaaaaaahhhhh... HHHhhnnnnnnhhhhh...."

This kept going for a while, with me really drawing it out by continuing to slowly fuck her ass and prostate. The bed sheets were soaked, with Katie's cock letting out enough cum to fill a bottle. Thank god for the waterproof undercover. Finally Katie was able to speak almost regularly, only occasionally shaking.

- "Holy.. what a wake up. Whoever gave you the permission to... do that while I was sleeping?"

- "Your ass of course. It was practically begging for it."

- "Well good job then, cause I could ... have that done to me again. Ahhh... your cock feels so good in my ass..."

- "And your ass feels great on my cock! Just gimme a moment, I'm almost done."

Katie twisted her neck to kiss me, and pushed her butt onto my cock.

"FFffffuuuuuuck..."

Katie's still full prostate was quickly forcing her to continue her orgasm, and her cock started leaking wildly again. She grabbed her now half-full breasts, and pinched her erect nipples, which seemed to push her even higher as her back arched.

Her perfect ass was squeezing my dick, and I soon crossed my threshold. As the pleasure spiked, I held on and started dumping another load in Katie's ass. It was more than before, though still below my usual amount. Her ass seemed to be trying to suck out my soul as it squeezed on my cock, while Katie moaned.

Once I had finished, I pulled my cock from Katie's ass and turned onto my back. As Katie turned around and hugged me from the side, I felt my cock start to grow again.

- "Haaahhh... that was so good..."

Katie grabbed my dick as it was still growing.

"Hmm? Did somebody maybe cast a spell on themselves?"

Katie was slowly jerking my penis up and down as it grew, making it appear as if she was stretching it.

"You bet I did. And I'm planning to cum buckets."

"Mmm... I think I already did."

Katie rose up on the bed, and licked my dick.

"Haha, it just gets better the more it cums. I think it's a bit bigger than usual?"

"I- mmmmhh..."

Katie had taken my head in her mouth, and was licking it with a passion.

"Mmm... don't stop... Your tongue is so fuckin' gooood..."

Katie shifted her position a bit, and her finger soon found my asshole. She pushed one digit inside, then two, and started slowly thrusting them in and out, pushing up on my prostate as she went inside. I could feel my cum starting to rise up. Katie suddenly took me out of her mouth, and let my dick flop onto my belly. She kept thrusting into my ass, pushing on my prostate. Did she want to give me a prostate orgasm too? I could feel my cum rising higher and higher, as the pleasure gradually grew.

Then the cum reached the opening, and my dick started leaking. Katie observed it for a while as the pleasure in my ass kept growing, and I was panting. Then she moved to lick my belly clean of my produce, and took my penis in her mouth again. She slathered my cock in her spit, and her mouth in my leaking cum. Then, even though I really didn't want her to, she pulled her fingers from my ass. She kept licking my head and shaft, down to my pussy.

She got up to sit, and showed two fingers inside my pussy while jerking my dick with her other hand. Her fingers started digging out my g-spot, pushing me rapidly closer to an orgasm. By leaning over towards me, her mouth could just about meet mine, and our hungry tongues found each other. We were fighting for supremacy, each one trying to reach into the other's throat. Her tongue was so soft and sensitive against mine.

Meanwhile my dick was rapidly meeting its limit. Her left hand was jerking my shaft, while the right one was rubbing top side of my pussy. I was very close.

I felt myself go over the edge as my breath caught in my throat, and my mouth opened in a silent scream. As I couldn't focus on kissing anymore, Katie moved her mouth down, enveloping the head of my dick just as my first shot got out.

"Aahhhh..."

Katie pushed herself down on my dick, swallowing my shaft to the hilt, not forgetting to finger my G-spot at the same time.

"FFffffuuuucckk!" I could feel her swallowing around the base of my cock as I shot loads in her throat.

As I eventually calmed down, Katie slowly pulled up for air, her lips sliding on my cock.

"Hahhhh!... That was a good load."

"And felt amazing... Oh, watch this."

My cock started growing again, seemingly determined to break human limits. Feeling it thicken made me grow hornier as it reached for my breasts.

Katie seemed to be almost hypnotized, watching it grow. Then again, so was I. It finally stopped at just below my breasts, and was rock hard again. Katie finally broke free from her daze, then turned around on her hands and knees, showing her round butt to me. She didn't say anything, and she didn't need to. I moved behind her, aiming my dick at the slit of her pussy.

I pushed, a bit cautious, and Katie let out a "hmhh!". I could hear it was not the best kind of moan. With my new size, I would need to go slow. But actually...

I grabbed the bottle of lube we had on the night stand, and squeezed a copious amount onto my hand. Then I put a finger on Katie's butthole, and pushed inside. It slid easily in and out, so I added another. She felt so hot inside.

"Mmm... you going for my ass instead?"

I was fucking her with three fingers now.

"Yeah, I figured that this is a bit too long for your pussy. But we should be able to fit in your ass."

Katie grabbed a pillow, moved it under chest and lied down with her butt in the air. Her ass was stretching nicely.

After a little while of fucking her bubble butt with four fingers, I pulled them out, and aimed my cock at her back door. There was resistance. I aimed a little lower. Katie didn't move. I put a bit more force into it, and then I felt as Katie's butt opened enough for my cock head to slowly slide inside.

"Hmmmmhhh..."

The good kind of moan.

I slowly pushed deeper, until I hit a bend about halfway in. I figured that I could work around it though. I pulled back, until Katie's ring was being pulled by the ridge of my dick's head, then slowly pushed in as deep as I could. Her ass was incredibly tight on my new, bigger cock.

I kept working her ass with my log, sinking a little bit deeper with each thrust. Katie's legs were trembling lightly, as I could feel the bend and my cock finally starting to align. With one more thrust, I sunk all of my member in her ass.

"Ahhhh!"

Katie's legs squeezed together and her fingers gripped the sheets. Her cock was hitting against her tummy and shooting cum, as her asshole squeezed on my cock with each shot. Her legs shivered as I made sure to keep fucking her ass in slow strokes while she moaned.

Eventually Katie's orgasm ceased, and she fell on the bed fully flat, with my cock popping out of her ass with a wet 'schhlorp'. I had not gotten enough though. I had been close to cumming, and wanted release. I pressed my dick against Katie's rosebud, and pushed. Little by little, my cock sunk inside her, and I was welcomed by her warmth and tightness.

"Ahhh... That feels... amazing... Your cock... is so... huge... It's stretching meee... Ahhh, fuck....." Katie was grabbing the bed sheets as her cock started leaking again. She must have still been sensitive from the previous orgasm. As I lifted my hips up and slammed them down against her butt, my cock was stretching her ass to its limits, but it brought Katie only pleasure. Her prostate was being squished like a stress ball, with my huge shaft filling her colon. Thanks to the spell my breasts had not shrunk at all, and I knew that the next load was going to be bigger than the previous ones combined. The thought of filling Katie up with my cum like a balloon was pushing me close to orgasm. Then Katie went silent, and I knew she was cumming because her butt was suddenly squeezing me, hard.

"AAAAaaahhhhh! Fffffffuuuuck! Don't stop!"

Well I knew better than that. I imagined Katie further soaking the sheets, her overstimulated prostate unable to stop pushing cum out. The thought pushed me over the edge as my cock went rock hard, and I could feel the orgasm start. A white-hot ball of pleasure grew somewhere deep inside me, spreading to the rest of my body, traveling up my shaft and bursting out from the head. Large spurts of cum, one after another, were shot deep inside Katie's ass.

'So... tight. So... ahh... Fuck...'

I collapsed on top of Katie, with my cock still pulsing in her. After pumping copious amounts inside, my stream finally slowed down to a dribble.

We both laid there in silence, our breathing slowly returning to normal.

"...that was a workout. I'm sweaty now."

"So worth it..."

"Haha."

We stayed there for the moment, feeling relaxed. My dick in Katie's ass was actually getting soft for once. Except that I could feel it also growing bigger.

"I feel really full now, especially with you lying on top of me. But somehow it's a nice feeling. Like, the stretching feels good?"

"Hmm... feels good, huh?"

"What? What's with that sneaky voice? You wanna pump more cum into me?"

"Not... Well, yes, but that's not what I had in mind. Just gimme a moment."

I didn't move for a bit. I had to focus for this to work.

"There we goooo..."

"What? What do you mean?"

Then Katie heard a faint noise, like water flowing in a pipe...

"Holy shit, are you peeing in me?!"

"Yup, and I've been needing to go for a while."

"Oh god, yes! I'm getting even fuller!"

The pee was adding to the large amount of cum already inside Katie and making her stomach visibly bloat to the sides.

"Ahhhh... this is nice after having a full bladder... I'm surprised it's not leaking, with you laying flat like that."

"That's because your dick is fucking ginormous! It's blocking the exit."

Katie couldn't see my cock, but being buried balls deep in her ass, it had a certain presence.

After I was done, I started pulling my dick out, at which point Katie tried to grab my legs with both hands.

"No! I'm gonna leak! I need to turn on my side first."

We turned on our sides with my cock still in Katie's ass, relieving the pressure on her tummy.

"Oh wow! My belly is huge!"

I lifted myself up to look at it. With my cock, my cum, and now my pee inside her, she looked like she was well into pregnancy. I reached around to feel her belly. It felt soft and warm, and round...

"It feels nice, stretching me out, but I do need to go to the bathroom now." She turned her head to kiss me on the cheek, then slowly pulled my cock out of her ass, only to thrust most of her hand in there as soon as it was out. A small amount of cum and pee leaked, but she managed to plug herself. Then she got up and awkwardly walked to the bathroom. I watched her go and thought how sexy and pretty she was, then turned on my back again.

My dick was still soft, but seemingly the same size as before. Looking at it reaching the bottom of my breasts, I had a thought. If it was bigger, could I suck on my own penis? Could I do it now?

I got up to sit against the head board, and leaned down. I was able to lick the head, but it was a bit too far to suck on it comfortably.

I licked my dick again. Then again. It felt nice. As if responding to my wishes, it got harder. It grew erect again, which enabled me to put my lips on on the head. Except that my penis wasn't finished. It got bigger still. More blood flowed into it, growing it in width and length. It pushed into my own mouth as the head inflated. What a turn-on. I let it grow, get closer to my throat. I wanted it bigger.

Once it had finished growing, I took it out to look at. The head, now almost too big to fit in my mouth, was poking out from between my breasts. I would have no trouble sucking on this.

I was barely able to stretch my jaw around the head, and started running my tongue around it, then pushed deeper and felt it hit against the back of my throat. It was heavenly. After some initial fumbling, I soon learned how to give myself a blowjob just right. Makes sense that I would be good at it I guess. I tried to push farther by grabbing my legs from below, but could not deep-throat it. Maybe the head was too wide, or my cock still wasn't long enough. I started bobbing on it while rubbing the shaft with two hands.

'If I can cum down my throat, it should make my dick longer. Though also wider.'

Blowing myself felt amazing. I knew just the right speed at which to run my tongue across the glans, and exactly how to use my lips.

Suddenly Katie emerged from the bathroom, and quickly hopped to kneel on the bed upon seeing what I was up to.

"Oh wow. That looks so hot. Maybe I can help you out."

And with that she started massaging my shaft with one hand, and the fingers of the other found my vagina. She thrust two digits inside, moving in and out, rubbing at the base of my penis. Each thrust and lick brought me one blissful step closer to an orgasm, and soon I saw white.

I exploded down my own throat, the flow being stronger than ever before. I pushed the head against the back of my throat, holding on for dear life. Most of my cum went directly down my gullet, and I could feel myself filling up. The downpour was too much however, and copious amounts spilled over my lips, and onto my breasts. Wave after wave of pleasure crashed over me. Then I felt Katie push my head down onto my cock. The leverage and the cum lubrication helped me push past my throat barrier, and my cock was found its way down my throat, stretching it impossibly wide. This caused my orgasm to intensify, and my cock to shoot out even harder.

After what felt like an eternity, but also not long enough, the orgasm subsided. I unfolded myself, lying down straight. I actually let out a burp.

"Whoops. I guess some air got pushed in too. Ohhh that felt good... My tummy is so full."

"Yeah it is. You look super hot with your cum baby. And that magical batter suits you."

Katie suddenly jumped on my torso, straddling my cock and waist, and pushed her hard cock into my cleavage. It was dripping pre onto my neck, held down by Katie squeezing my tits together. Guess she had gotten a little pent up watching me.