Free Samples Part I

Story by bsaxagent on SoFurry

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Disclaimers: If you are underage, or have a dislike for messy Male on Male sex and transformation, hitting the back button would be the best course of action for you to take right now.

Alright, now that they're gone, this is the first in a three part series. I've been toying with the idea of a human turning into an anthro for sometime now, but I didn't want to go the route of him being a were- of some kind. So, I decided to go the medical route as that had always played to my interest somewhat. I think it turned out quite well, considering I don't delve into stuff like this often (I'm trying to, though!). I hope you enjoy it, and I do appreciate (positive) feedback!

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I stared at the small package that sat on the counter. It wasn't a surprise; I knew exactly what lay inside. The brown cardboard box with tape covering every single edge as if it were so frail that any contact with it would make it fall apart finally arrived today, and I would find out tonight if this was a product of pseudoscience or not.

"Bring out the animal in you!" Advertising is a lame art. Over-hyped phrases, hooks, and other pathos driven slogans polluted the market and made it difficult to tell what was serious and what was a scam. This package was probably the latter, but part of me, despite the rational part of me telling me that is just a whole bunch of hoopla, was compelled to buy this. Something about it seemed legit, and it wouldn't hurt to try a sample, right?

Firstly, I better explain my predicament: I'm David. I'm a human of a short and slim build (5'6'' and 145 pounds for you number oriented people). I have brown hair and hazel eyes, and anything beyond that isn't important enough to mention right now.

But, as a human, I'm inferior to my social anthromorhpic counterparts.

"In what way?" You might ask, as every species has their own advantages and disadvantages. There is nothing interesting about humans. Anthros always seem to have it better than we do. Now, there isn't any racial grudge going on here. Socially, we are all equal, and we treat each other that way. Racism is a rare thing these days.

But from a physiological standpoint, most anthromorphic species are superior to humans. Stronger, faster, sexually adept...all of these things I desired in some way, and I just had to lose the genetic lottery in that regard. Why couldn't I have been born a horse, wolf, lion, or bull? It frustrated me, and it was probably the main reason why I had these samples in front of me.

You see, a company by the name of Meta-Labs had been developing supplements for the past ten years or so. They just recently came out with a product that was aimed towards humans that could supposedly alter their body to resemble an anthromorphic species of their choice. Genetics hadn't even advanced that far yet, but curiosity got the better of me, and it was free.

Obviously, someone does really well in their marketing department (despite previous statements about marketing in general), otherwise I wouldn't have a package with their logo on my kitchen counter. Or maybe, I just wanted to believe that I could actually change my body to something more desirable. Not that I was unattractive; it's just hard to enter into a dating market where most are seeking other anthromorphic people. Humans are a rare breed these days.

I grabbed my box cutter from the drawer, and carefully opened the box. I pulled out the packing peanuts to find a small tin wrapped container with three lumps and folded piece of paper. I unfolded that paper, and found instructions of some sort.

"Thank you for choosing a sample of our product. We believe that everyone will be satisfied, and that's why we gave it for free..." I mumbled. I skimmed over the rest of that paragraph; it only explained the details of the development of the product, something I could care less about.

"Directions for use: Please only take one pill per 72 hours to ensure that results don't mix." Simple enough. "Take with one glass of water on an empty stomach. Results are not permanent. If they persist for more than two days, call the number below."

I stared at the tin package. Those three pills, each one representing a different species, could be the answer to my superficial problems. But still, would they even work? I mean, this whole was probably wishful thinking at best, but I then reminded myself that it was a sample package. I hadn't wasted any money if I did try one.

I tore the tin lining and took the first pill on the left. It was a standard capsule pill, blue in color. I looked at the instructions to see if they sent any information on which pills did what, but I found nothing. I frowned. I opened the other two, and found a green one, and a red one.

What's the worst that could happen? It was free, they gave me a number that wasn't the hospital, and my roommate was out for the weekend. I could try it, and see what happens. Stop worrying, David.

I filled up a glass of water, and by process of ranking them by favorite color, I took the red one first. I popped the pill in my mouth, and swallowed it with my water quickly. I felt the pill travel down into my stomach. There was a strange weight there, but I didn't feel anything yet. Obviously, it would take some time before my stomach acid ate away the capsule shell.

Minutes rolled by as I waited for something, anything to happen. The idle sound of the grandfather clock in the adjacent room ticking away at the seconds was the only accompaniment for my anticipation. I laughed to myself. Of course nothing would happen. It was a sugar pill, if anything. A placebo for the gullible populace. Fortunately, it was just a sample package that was free. I guess I would just have to-

Shit.

My stomach rumbled, and not in an "I'm empty, please feed me" way. I knew that pill was loaded with crap. I ran for the bathroom, feeling queasier as I went. Something about didn't agree with me, and hopefully I wasn't poisoned. Sweat was beginning to form at my brow. I grunted as I reached the toilet, prepared to unleash the contents of my stomach into the porcelain bowl. My vision pixelated and I had tunnel vision. My body was hot. What the fuck was in that pill?

My breath drew short. My stomach lurched, but nothing came up. It lurched again, and I groaned as I could taste the bile that formed in my belly. But it was just another dry heave. God...why did I have to do this? Is this thing going to kill me, all for what, nothing?

I placed my forehead against the rim, relishing in the significantly cooler temperature. It provided only temporary relief, however. My body was now racked with pain. It was incredibly sore for some reason, and my feverish temperature increased.

Fuck. Where was that paper with the phone number? God, I needed it now, and where the fuck was it? MY mind was getting hazy.

I heaved again. I collapsed on the floor. My head was spinning, and my aching body was starting to shake.

"Here comes the seizures, and then I'll be dead soon enough," I thought, expecting the worst. I closed my eyes and said a small prayer, that maybe, maybe, I'd pass out or something. My consciousness remained.

I slowly opened my eyes, vision starting to blur. My skin was beginning to itch. Was I having an allergic reaction? God, so itchy...I scratched myself as best as I could. Arms, legs, belly, and even my groin was beginning to itch, but nothing I did satisfied that itch. My skin was actually turning red as a scratched hard, desperately trying to relieve myself.

"Ack!" I gasped as I drew blood. I scratched my arm too hard, and broke the skin...but how? My nails were blunt, they shouldn't be able to-

That's when I actually noticed my nails. They were longer than what they should have been, and slowly darkening in color. Part of me was elated, and the rest of me was scared shitless. The pill might have worked, but god dammit, it hurt so fucking much!

The sensation of pins pricking my skin caught my attention next. I opened my eyes, and glanced down at my arms. Brown and black hairs were beginning to poke through my skin at an alarming rate, which terrified and excited me. They covered my hands and arms, and I could soon feel the itchy short fur spread to my chest. Rational thinking told me to remove my clothes, which I did. The majority of my front side was covered in the brown fur, and my arms and legs were covered in black fur. The temperature of the room grew hotter once the fur finally covered my body from head to toe. I rubbed my hands along my body, feeling the fur. It was soft, but had a slightly coarse texture to it. I accidentally rubbed over my nipple, and felt the same abrasive texture. My nipples hadn't changed, why would they feel that way?

Glancing down at my hands, I found why. Well, to call them hands would no longer be accurate, as they now were paws. The coarse texture I was now feeling were the pads the lined my palm and fingertips. My stomach cramped again, and I was back on the floor, letting out a howl of pain.

My tailbone ached. There was a massive pressure on my tailbone-no wait, coming out of my tailbone...I felt something pop, relieving the pressure. It felt I was stretching a muscle I hadn't used in a long time, and I already knew what had developed, even through my flustered mind. My newly formed tail back and worth, seemingly of its own accord.

A massive ache suddenly filled my sinuses and face.. My head felt like it was getting compressed, bones crushing and restructuring themselves to reform my canid face. I watched with slight agony as my chin and nose extended forward, producing my new muzzle. I felt the skin of my ears flopped over my actual ear. Soon, the pain faded, but my body was still achy even when I calmed down a bit. I was still breathing hard, but I was at least getting air into my lungs. My head stopped throbbing, and my internal temperature seemed to regulate itself for the time being. I stood up as best as I could.

I jumped back slightly, almost stumbling over myself as I was not only caught off guard by my sudden change of appearance, but my balance had shifted as well, and I wasn't used to it yet. A handsome Doberman stared back at me. I moved my hand-no, paw-and watched as my reflection did the same. I touched my face; it was strange to see my muzzle on the insides of my eyes, but I would get used to it as well. It was, indeed, all me.

As I glanced over my body, I was slightly disappointed with two things: Firstly, I thought that I'd become a bit more muscular. I definitely had more definition, but I figured my muscles would be bigger. I'm mean, shit. I'm not complaining by any means; I actually had a six pack with obliques, pecs, and even muscular hips, but a little more wouldn't have hurt.

The second thing was my genitals. My balls now hung in a furry sac, but my dick hadn't changed, and there wasn't a protective sheath to speak of, so I kind of felt gypped. I gave it a good fondle though, I mean, I still looked hot after all-

I bent forward as my stomach cramped once more. Well, it wasn't my stomach, it was lower, much lower...I almost smacked my nose against the counter as I lowered myself to the ground, sweat pouring off of my brow once more. My breathing grew quick as I felt the weirdest sensation envelop my groin, almost as if the skin surrounding my dick was being stretched. The furry skin literally wrapped around my dick, encasing it completely. A small hole opened up (which I thankfully did not feel), and I felt my cock start to become erect.

Well, it felt like it was. In truth, the sheath ballooned upwards, stopping about an inch from my naval. My balls swelled up rightfully so, and the dropped lower as my furry sac expanded. The added rush of hormones flushed through my system. I felt the temperature of my body increase to almost uncomfortable levels. My breathing grew heavier and heavier as my new sex drive kicked in. I instinctively grabbed my new sheath and balls. Sparks flew through my nervous system, and a shiver flowed through my body. My balls had never been this sensitive, and I felt my erection swell within my new sheath.

The tip of my newly formed cock poked out of my sheath. I grunted again as a new wave of heat waved through my body. My erection spilled out of my sheath, deep red in color. Even soft, it was still larger than my previous cock. It stiffened quite rapidly, filling out the spongy tissue with blood. It passed my naval, and almost reached my chest before a mighty throb confirmed its completion. It was a good ten inches long and five inches thick, and pre was drooling out of the tip.

I couldn't take my eyes off of it. It was massive, far larger than anything I had seen in person. It jutted out from my crotch is a majestic manner; its sight both imposing and highly arousing. I gripped my sheath, feeling the hardened lump at the base. I almost forgot that I had a knot now, and this is what it must have felt like when it wasn't swollen. I slowly moved my hand-paw upwards. Shivers, tingles, and other pleasurable pops shot through my body as I took a painfully long and slow stoke, pre acting as a lubricant.

I had to brace myself against the counter, it was so sensitive. A nice dollop of pre drizzled down my cock, slickly sliding down until it pooled at my sheath. I caught my breath, and resumed stroking. Oh god, it felt so good. My tail wagged furiously behind me as I continued to please myself. The paw pads were an interesting texture. They were rough and oddly smooth at the same time, creating an interesting sensation along my dick. My ministrations were causing my legs to twitch as the pleasure increased. My balls seemed to pulse, fueling my haze of arousal.

My breath drew short, but completely unlike what I had previously experienced. My knees were shaking and threatened to give way, and in a moment of rational thinking, I moved to my shower. I sat on the cold tile, allowing it to cool my heated body. I leaned back against the wall, tongue lolling out. My hips bucked and writhed uncontrollably as I jerked, pre beginning to spray all over my chest.

As my paw passed over the base of my shaft, I felt the small bulb begin to inflate within my sheath. Slowly, it swelled with blood, and my sheath could not contain it any longer. A bulb of swollen flesh emerged from my sheath. It was two inches thicker than my throbbing cock, and made it an entire inch longer. I tenderly touched it, relishing in the bolts of pleasure surging through my body. I moaned out loud as a spurt of pre splattered out of my cock, landing on my upper body. Some of it landed on my tongue. I flinched, but I didn't find the taste unpleasant. It was a little salty and bitter, but there was another flavor that made it desirable as well. I wanted more.

I bent forward, surprised by my new flexibility, and lapped at my dick. I moaned as my broad tongue covered the tip of my cock, slurping up the pre that had gathered there. I shivered as my hips bucked forward, tingling sensations spurring from my balls, and electrifying my whole body. I grasped my knot firmly, yelling as a rush of pleasure flooded my body. I sucked and stroked rapidly, body running on autopilot. Pre filled my mouth in an impressive amount, and my balls began to ache. I raced for the edge of orgasm, and with one final throb of my cock, I was there.

It swelled slightly, and then a burst of cum shot down my throat unexpectedly. My eyes widened, and I pulled my spewing dick out of my mouth. Ropes of cum fired, splattering above me. One, two, three...five...I was beginning to lose count. It was hard to concentrate when the haze of lust and surges of pleasure clouded my brain. I let go of my cock, and it throbbed almost forcefully against my chest. Several more spurts of cum struck me on the underside of my chin, all the while, I was still stroking my cock, drawing out the pleasure of much as I could. Some more cum dribbled out and landed on my chest as my orgasm finally began to wane.

I relaxed against the tiled wall, not realized how draining this orgasm was. I was suddenly very tired. Satisfied, but exhausted. I looked around, proud of the mess I had made on myself and the shower stall. There was cum dripping down the wall almost eight feet up, which was pretty damn impressive. I laughed little to myself, enjoying the new yips my vocal chords made as I did so.

I clumsily stood up, legs still shaking in the afterglow. I turned on the shower and bathed. I didn't realize how hard it was to clean fur until now, and I almost four times as much shampoo as I normally would have. But, I did manage to clean myself and the stands of splattered cum that were on the wall.

Drying off took a lot longer than I thought it would, but I eventually did get all the excess water off of my fur. I walked in the hallway, and towards my room, depositing my clothes in the hamper. I collapsed on my bed, and soon I found myself asleep.

Sunlight struck my face. I groaned as I slowly woke up, stretching largely across my bed. I glanced at my clock. I sat in slightly surprise, rubbing my eyes. I had slept for a good twelve hours, making it noon. Not that I minded; I hadn't slept that well in a long time. I lounged around for a bit, idly scratching my balls as I lay in bed. They still had a slight tingle to them, and the memories of last night replayed in my head. I smirked. This was definitely a wonderful product. My cock started to peek out of my sheath, the red length slowly inflating until it hit a full erection.

"Hey, you home!"

"Fuck!" I instinctively swore. My roommate, Greg, was home early.

Shit.

"Hey, you in your room?" I heard his heavy footsteps come down the hallway.

"Yeah!" I responded, scrambling for clothes.

"You okay? You sound funny." Shit. I almost had completely forgotten I wasn't exactly my normal self. I quickly pulled on some briefs and a pair of pants when I heard a knock on the door.

"You alright in there?"

"Yeah-Just fine!" The door opened.

"Hey do you have twenty-who the fuck are you?"

Fucking shit.

"Uhh, I can explain?" I said. The brown muscle-bound otter looked at me funny. He didn't sound mad, just a little suspicious.

"I'm sure you could. You a friend of David's?" he asked suspiciously.

"Y-yeah! I spent the night, and he said he had to go-" Come on, brain think of something, anything! "-to my -his aunt's house."

I hope he bought it.

"Huh, he never told me. But then again, I didn't tell him I would be home early. So why did you respond to me? I thought you were David for a sec, you kinda sound like him."

"I thought you were David," I lied. His voice definitely did not sound like mine. His was deeper, and had a slight edge to I that could cut through an entire crowd of people if need be. "...and I just woke up."

"I see. One more question-why are you wearing his clothes?" he eyedme even more suspiciously now.

Damn, got me there.

"Uhhh...." I blushed. A grin crept to his face.

"He's keeping his boyfriends from me, isn't he?" he laughed. Well, it was no secret that I was gay. Greg told me he was bi once, but he was drunk when he did, so I don't know if I was actually meant to know. "Man, you're a fine looking guy. He certainly had good taste."

"Excuse me?" I asked, partially out of disbelief.

"Oh, I can't compliment your looks? You're a hot lookin' Dobie. I bet you're packing a lot, too. I know he likes them big," he winked at me.

Was my roommate seriously flirting with me? Damn, I mean, he wasn't wrong; I do have an affinity for guys larger than me, but the fact that Greg was telling me this...my cock throbbed in my briefs, which were slightly tighter than they were before.

"Heh, I see that you think I'm hot, too."

There was a long moment of silence. Greg had his arms crossed, biceps flexing slightly. Yeah, Greg was fucking hot. If he was a foot taller or so, he'd be my dream guy. Gregg had the aspirations to be a body builder, and he was well on his way. He was about my height, maybe an inch taller, but easily weighed a good fifty pounds more than me, bringing him closer to 200 pounds. His tight fitted shirt showed off the musculature of his body; and almost impeccable representation of what should be on an anatomy chart. Surprisingly, he had balance though. Where most young body builders, or athletes in general, focused on their chest and arms, Gregg focused on his back and legs. His reasoning was that he could avoid common injuries of the knees, groin, and lower back if he trained those more, and by doing that, the other muscle groups would be that much strong for having a better base to work on. At least, that's his reasoning.

"I won't tell if you won't tell," I said. There was truth to that, after all. Unless he found out he was fucking me instead, my 'boyfriend' was safe.

"Good," he answered. He stepped towards me, and kissed me on the lips hungrily. I allowed him entry to my mouth, and I tried using my new tongue the best I could. It certainly had more dexterity than my old one, and it was able to pick up the more subtle tastes of Greg's mouth. His own tongue mapped my mouth, delicately maneuvering between my sharper teeth. It was one of the most passionate things I've ever experienced, that's for sure.

We pulled back to breathe.

"Damn, and a good kisser? David's lucky. What your name, pup?" He asked, lust filling his eyes.

"Da-Daniel." I almost gave him my name, which would be kind of weird if I did...

"Well, Danny boy, time to strip." He grabbed his shirt, and peeled it off. Ripped muscles, laced with thin veins right above the surface of the skin, came into view. His prized core was a sight to behold. His body fat was so low that the lower abdominals that led towards to groin were somewhat visible, which was extraordinarily impressive. Obliques flared from his sides. His serrated anterior framed his abs like a saw with their jagged points leading towards the center, seemingly focusing on the deep crevasse that ran down the center of his body.

Overlooking his abs were his pectoral muscles. As I said before, Greg didn't believe in blasting one's chest full of muscle, as it would create imbalance. But, that isn't to say they weren't worship worthy. They leered over his abs, giving him a pectoral shelf that forced his small pink nipples downwards. They were smooth and round, until the thick slabs of muscles met in the middle. There, a jagged valley of connective tissue lay, so deep and thick that I probably could lose a coin in there. They expanded outwards, reaching over his collarbone and into his thick shoulders.

His shoulders resembled, simply put, cap stones. Boulders, if you're feeling cliché, sat on top of his arms, where each deltoid was clearly defined as they wrapped around the joint. The muscles were thick and cordlike, and a tributary of veins ran through them giving them an additional texture.

That tributary of veins led to his thick arms. The biceps were cleanly divided into two halves, with a thick vein running down the center. Sinew and other connective tissue decorated the elbow joint, almost in an ornate fashion. The brachi tendon was thick, leading into the forearms. His triceps flanked his biceps. Serrated edges of the long and lateral heads were easily seen, and though I could not see the medial head, I knew that the thick muscle ran through his arm. The typical horseshoe shape was there, and the lateral head snaked down until it reached his elbow, filling out his arms. The forearms were just as majestic and ripped as his shoulders were; thick cords of muscles that twitched with ever movement were laced with intertwining vascular systems. His paws were thick and meaty, and yet, there was a hint of delicacy there, in addition to the brute strength he had.

He began to pull down his pants. My eyes widened as his quads revealed themselves. I mean, I knew they were large just like the rest of him, but to see them in this close of detail was a wet dream come true. The meaty quads spanned from his hips to his knees, gradually increasing in size until the vastus medialis and lateralis heads reached the size of oranges. The striations of his muscles were visible here, and I watched as they twitched as he removed his pants. The vastus intermedius was a large diamond that ran through the centers of his quads, creating the envied V shape in the lower quads. His inner thighs were corded with the various adductor muscles. Thicker veins ran through these, supplying his legs with the large amount of blood that they needed. As he kicked his pants away, I could see his hardened claves for a bit as the thick muscle flared out. The split in the middle resembled his chest somewhat; it wasn't nearly as deep, but it was still an impressive gorge on his body.

"You just going to stand there and gawk?" Greg asked with a smirk.

"Oh, right," I shook my head. I hastily pulled off the pants I just had put on, revealing my somewhat impressive bulge.

"Nice," Greg commented, slowly groping his own growing bulge.

"I'll show you mine if you show me yours," I suggested in a slightly cockier manner than I had intended to.

"You think you're bigger than me?" Greg smirked again. Maybe he was, I had no idea. But, I knew I'd be tough to beat.

"One three?"

"One, two...three!" Greg counted. We both removed our straining undergarments, releasing our aching cocks.

"Dammit."

Greg's cock stood straight out of his sheath, red in color just as mine was, flinging a small bit of pre up into the air. It was about eight inches long, but slightly thicker than mine was. Thick veins lined the turgid shaft, leading straight to the tip of his dick.

"Hah!" I grinned. My own ten inch cock stood proudly before him. He did seem somewhat disappointed.

"You're lucky I'm a bottom anyways," he grumbled in mock disappointment.

"..What?" I was in shock. Surely his aggressive behavior made him a top...

"You heard me. You get my ass today," he grinned. "Follow me, I don't want to do it in here; David'll know."

I already do know, I chuckled to myself. I followed him to his room. It was surprisingly neat, but it still had the pungent smell of Greg's musky scent about it. It wasn't unpleasant. It reminded me of cedar in a way, definitely a more earthy smell. There was also a hint of salt and water mixed in, which I suppose was typical, given the fact that he was an otter.

Greg climbed on top of the bed, presenting his back side to me. His back was mouthwatering. Lats flared widely, giving his back an abnormally large width. The infraspinatus muscles that lay on the inside of the lats jutted outwards, acting as counter weights for his arms. The rhomboids met in the center, forming a hardened diamond of muscle. Traps crowned his back, flaring upwards until the met his neck. His lower back was rippled with crisscrossing muscle fibers, twitching as he moved his hips, teasing me.

I grabbed the two globes of muscular flesh that he readily presented to me. His ass was smooth, which was slightly odd compared to the rest of his body. I expected them to be corded just like his lower back and shoulders were, but I wasn't complaining. He moaned as I kneaded them, feeling the hot muscle move underneath my touch.

"Stop teasing me, dammit, I haven't jacked off in a week..." Damn, he was really needy. I hadn't seen Greg like this, but damn, he was fucking sexy. His stubby tail flicked back and forth in anticipation. I grasped it firmly while sticking my finger in my mouth, soaking it with my saliva. I placed my soaked finger against his asshole. He flinched slightly, but I doubt it was from fear. I pushed in. He moaned at the intrusion, pushing back on his own accord. My entire digit was in my ass now, and it was easily accepted. I curled my finger upwards, rubbing against his prostate. A long moan answered me, and I continued to rub it, seeing as how he enjoyed it.

I glanced underneath him, and found that my actions certainly had their consequences. A long strand of pre clung to his tip and reached the bed. His cock throbbed every time I rubbed my finger over his prostate, just a bit more pre oozed out as well. Greg shivered as I finally pulled out. He didn't much preparation which made me feel good knowing that I wouldn't hurt him much.

"You ready?" I asked.

He grunted. Good enough for me.

I gripped the base of my cock, shivering at the sensitivity. I smeared the dollop of pre on the tip of my cock, feeling it heat up from the clear fluid. I pressed against his opening, and pushed. I grunted as I entered, feeling the sudden warmth engulf my thick cock.

"Oh damn, that's nice..." Greg hissed underneath me. I could feel his body tense up as I pushed forth, smoothly entering him. Almost all too soon, I felt my groin make contact with his ass. Our balls gingerly touched each other, sending a spike of pleasure through my body. I held still for a moment, momentarily relishing the feeling of being inside one of the hottest otters around while I let him adjust to my cock. His innards were hellishly warm, and they felt as if they were continuously sucking me inwards, a strangely arousing sensation indeed.

"Alright, you can start," Greg grunted once more. I pulled out, feeling the slick sensations of my cock rubbing against the hot flesh. Greg moaned as I completely removed my cock. I pushed forward with a lot more force that I intended to, completely entering him in one thrust. My hips started to move on their own. I hadn't lost control of them yet, but they were moving faster than I wanted them to. But with the pleasured sounds Greg was making, I didn't exactly stop them. Plus, it felt amazing.

Loud slaps were filling the room. I grunted with every thrust, my cock throbbing madly inside of him. My balls collided with his, sending pleasurable pain throughout my body. I was beginning to work up a sweat. More and more pre leaked into Greg's body, and I'm sure he was leaking copious amounts below as well. He let out the occasional groan as I fucked him, and arched his back some, changing the position of his ass and I thrust inwards, striking new spots.

A certain heat filled my balls, and I knew that my climax was not terribly far off. I lifted a leg up, and resumed my bombardment on his ass. Greg's tongue was lolling hotly out of his mouth, now that he was feeling the effects of this new position.. I guess he really was needy, the horny bastard. He idly stroked his own cock, which caused his asshole to clench, sending bolts of pleasure through my body. The chain reaction spurred me on. I humped harder, increasing the friction between us. God, it felt so good!

I felt my knot begin to form as he pushed back against me. The continuously growing lump was becoming more and more difficult to lodge in him. He grunted as it finally swelled completely, and it wouldn't enter.

"Fuck, it's huge..." he commented, trying to push back against it. I ground against his ass, trying to mash my hips against his. With one final push from both of us, it popped in.

"FUCKIN-" Greg howled in pain. I stopped moving to let the poor otter adjust to my knot as it mashed up against his prostate. His cock throbbed with a slick slap against his abs. It was painful to force myself to be still. My hips were itching to move, my cock was spewing pre into the otter's hole, and my balls ached, boiling with an almost painful pressure. I gave a slight thrust to help relieve the sexual need. Greg grunted. It still hurt him, but he pushed back. Apparently, his need had overridden his pain.

I bucked forward. I was not able to easily take out my knot, but I worked with what little room I had. I bent forward and practically laid down on his body as I fucked him like mad. The feeling of the contours of his back pressed against my chest was very sensual, and I took a deep inhale of his cedar-like musk. It was now heavenly, and quickly fueling my lust induced haze. I reached down underneath him and grasped his cock firmly, and began to stroke in time with my piston-like thrusts. Greg almost screamed in pleasure. I could tell he was holding on as long as he could, but it was a losing battle. His body quivered, as did mine. My legs almost gave out. I gritted my teeth and continued forward, giving him all I could. He turned his head to the side. My lips met with his, and we kissed fiercely as our orgasms finally hit.

He moaned loudly into my mouth, practically screaming down my throat as his own cock swelled, ejecting his pent up cum everywhere beneath him. I heard it splatter against the sheets several times before his orgasm finally waned. My own orgasm hit almost at the same time. Several spurts of cum jetted inside of his, splashing against the intestinal wall, flooding his guts. I held him there as my orgasm raged on. We kept kissing, as his ass tried to milk me dry. With a final weak spurt, my own orgasm finished. Greg collapsed on the bed, splattering in his own juices, and I went with him, resting on his back.

"God damn, pup...I can see why David likes you. You know how to fill a guy up..." Greg commented, breathing heavily.

"Thanks...you're not bad yourself, making a huge mess on your bed...that's hot."

"Man, you wore me out!" Greg laughed. I laughed too, as he did the same for me. We laid on top of each other, listening to each other's breathing and relaxing heartbeat. It was quite relaxing, and I lulling in and out of conciousness. My balls still tingled from the explosive orgasm. I sighed contently, and found myself falling asleep once more.

Several hours later, I woke up with a massive pain in my face. I was still in Greg's bed, but he wasn't there. I was wrapped up in his sheets somehow. My head throbbed painfully, and I felt my jaw crack. I grabbed my face as I tried to contain my scream of pain. I hurried to the bathroom, almost tripping over the sheets that had tangled around my legs. I looked in the mirror. My face was contorting, almost imploding on itself. I then realized I was turning back into my human self. I grunted as I felt the nauseatingly intense heat from yesterday flood my body once more. The itchiness returned, and I found myself scratching myself furiously as I did yesterday. The black and tan fur began to fall out more and more with each scratch. Thinking quickly, I hopped into the shower stall so that I could easily clean up the fur. It'd be difficult to explain to Greg about this...

Fortunately by now, the searing pain from my face had mellowed some as my face returned to its original state. I turned on the water, and scratched my body some more, letting the fur wash away into the drain. Hopefully it wouldn't clog, I thought to myself as more and more of my white skin revealed itself. I felt an odd sensation on my back side, and as best as I could, I turned to look at my tail, which began to recede into my lower back. I grunted as another wave of pain rolled over my stomach, causing me to keel over in the stall.

I almost vomited again, but fortunately, nothing came up. The pain in my stomach stopped, and I looked at the rest of my body. My genitals had turned back into my human ones, which was slightly disappointing. Various patches of fur still clung to my skin, and I had to scrub to get them off. I flopped onto the cold tile of the shower stall, the shower still pouring water on top of my. I felt my head again, making sure that my bits and pieces were finally human. My ears were no longer floppy, my muzzle had retracted into a human face, and there wasn't any fur on my upper body. I sighed. It was kind of depressing. I was really enjoying that body, and it was a pity that I had to return to my own so soon.

The last traces of fur flowed down the drain. I was still recovering from the intense pain of shifting back, but I was feeling a lot better. I washed up as best as I could, and grabbed a towel, wrapping it around my waist. I opened the bathroom door to see if Greg was still around. He wasn't in sight. I dashed over to his room to find my clothes. I found them, and hurried to my own room. I had made it safely. I sat on my bed after depositing my clothes in my hamper, ready for tomorrow's wash. What a day it had been, even with yesterday's events tagged on. I smiled to myself. Those pills were the real deal, even if it I had to deal with a shit-load of pain.

"Hey, you back yet?" Greg yelled from the depths of the house.

"Y-Yeah! I just got back ten minutes ago," I lied. Well, it was partially true. Daniel had left, and I was here now.

"Huh, didn't hear you enter. But that's what I get for taking a nap on the couch..." Greg said to himself. I was going to wonder if he would have mentioned the disappearance of Daniel, but I guess he didn't because of our 'secret'. After all, I wasn't supposed to know anything.

"So who's your boyfriend? I saw 'em earlier today after you left."

"You mean Daniel?"

"Yeah, that guy. Seems like a good catch, you lucky bastard," he laughed.

Oh, if only you knew...

I dressed myself and headed down the hallway. Greg was sitting on the couch watching TV wearing purple pajama bottoms and no shirt, which was common attire for him at night. But now, I was able to appreciate that body more due our intimate experience with each other. I could still smell the faded scent of arousal on him, though it wasn't nearly as strong as it was when I was Daniel. I walked into the kitchen, and stopped, my stomach churning slightly as my eyes fell on the counter.

The pills were still on the counter, but the box was gone. Shit. Did Greg find out?

"Greg..?" I hesitantly asked.

"Yeah?" he belched from the living room.

"Did you...did you move a box in here?"

"Yeah, I figured those pills were yours, but an empty box is an empty box. You trying some supplements or something?"

"Y-Yeah. Some multivitamin, or something like that," I lied.

"Nice. Tell me how it goes; I've been wanting to get one of my own."

I let out a sigh of relief. At least he didn't know, I think. I took the remaining two pills into my pocket and left the kitchen. I headed straight to my room and deposited them on my dresser.

It was tempting to take one of them now to see what would happen, but I couldn't risk it in front of Greg. Plus, I had no idea what the hell these did, and that kind of scared me. I tried to imagine myself turning into a bull, with huge horn piercing my skin as they grew out of my skull...I gagged. I didn't need that, not right now.

But first, some sleep would be nice.