Simon let out a sigh as he sat down on his bed, leaning back a little. Tonight was a rarity, as both Alvin and Theodore were preoccupied with other things so they would be out of the room. Heck, they weren't even in the house. Wonderful.

He loved his brothers, from the very bottom of his heart no less, but the silence of his own company was a gem. Not to mention it gave him time to really get into the more interesting experiments.

He didn't waste any time, leaning over to his nightstand and, instead of opening the drawer, he slid open one of the side panels, revealing a secret compartment he had built in. Perfect for hiding things in plain sight, especially with Alvin's sticky fingers whenever he knew something new was made.

Simon sighed as he looked inside, spotting his target. Three test tubes, each full of a cloudy pink substance and capped with a rubber stopper. He took out one and rolled onto his back, looking all over it.

All he wanted to do was recreate the Mr. Heartthrob potion. Was that so much to ask? And yet, he never did get that formula just right, no matter how many times he replicated it. All he managed was to make a hair growth serum.

That is, until this latest batch. He tried it before, and the results were too good to call a mistake. Three different substances, and the one he chose had four effects so far, and this one may have had the most interesting set he had, he even deemed it his favorite.

Maybe he didn't transform into his alter ego, but what he did get was much better.

Simon popped it open and, without hesitation, drank down the entire mixture, gagging a little once it was all gone. He couldn't get rid of that bitter, pungent aftertaste. But the effects were settling in already, and he didn't have time to fuss over flavor.

A shiver ran down his spine, followed by a surge of warmth that went throughout his entire body, drawing a soft moan out of him as he grabbed at the blanket beneath him, squirming a little as his potion worked its magic on him. Within seconds, Simon felt himself going stiff, his underwear quickly becoming tight and uncomfortable as his penis rose.

He worked quickly at undressing himself, first wiggling out of his shirt and laying it aside. The first effect was the growth. Normally, when aroused, he reached a good six inches. The potion gave him much more to work with. He started panting, one eye closed as he looked up at the ceiling. He was faster at sliding his underwear off, having to rush to kick them off, letting his dick jump up free, sending precum flinging onto the blankets between his legs. He wa as hard as could be, the next effect started then. The warmth came back to his body, accompanied by pleasant tingles that centered themselves to Simon's balls, making the munk moan out loud as he held on to his sack, feeling it as it grew.

A pair of tennis balls was the usual size it made him, and it wasn't any different tonight. He bit his lip, trembling as he curled his toes into the blanket, fondling and gently bouncing his balls in his hand.

Thoughts of lust began to fill his mind, shrouding anything else that may have been able to peek in. Jeanette, Brittany, Eleanor, his brothers, Dave, fellow classmates, no one was off limits. Almost every time, he imagined himself on top of them, having his way with his new endowments. Those thoughts always made his heart beat faster.

Simon's hands moved up to his shaft once more, needing them both to hold its entirety. He bit his lip, feeling a fresh surge of pleasure that amounted to another hefty shot of pre. Up, down, up, down, slowly picking up speed as he arched his back off of the bed, aiming it up at himself now. He stared down his shaft, watching the head as he grit his teeth. With the extra size, he could…

Taking in a deep breath, Simon managed to release his hefty shaft, panting quietly as he sidled up against the headboard, resting his back against it. The third effect had yet to take place… Without hesitation, Simon opened up his mouth, holding his shaft in place as he engulfed the head, groaning lowly as he took in more and more, only managing to reach almost half of it before the tip jabbed the back of his throat.

He still had to get used to that.

Simon held his cock in one hand, stroking it in sync with his suckling while the other one grabbed the blanket. There it was. The sensitivity part. Stage three. His moan wasn't as loud as he wanted it to be, but he let it out either way. His precum had become sweeter over the course of taking his little mixture, maybe a side effect? Either way, he didn't mind. It made the process easier to put up with.

He huffed through his nose, bobbing his head slowly as he savored the taste of his own fluid, running his tongue into his urethra a few times so he could lap it up from the source. The taste… the slick texture… the sheer amount he was creating… Simon's eyes rolled back a little as he wrapped his arm around his shaft, swirling his tongue around the head leisurely while his other hand groped his balls.

The weight they had, just feeling them fill out his palm… it was great~ If he hadn't ever tried his own mixtures, he would have never known he'd enjoy such things.

While he kept himself down on his cock, he couldn't help but let his mind wander. It was Jeanette going down on his engorged shaft instead. She wouldn't freak out or turn him down. Instead she'd be more than happy to help. Yes… That's the stuff. Another gush of sweet pre made Simon pull off of himself, panting softly as he stroked himself off with both hands to catch his breath. His mouth was good, but not enough. Not on its own… he sighed as he sat up in bed once more, his cock bobbing around as he moved. Simon opened up his drawer again, rummaging through crumbled papers and spare underwear until he found what he needed. It was a fleshlight and a bottle of lube. The toy was simple, a cylinder shape, all silicon and a translucent purple color to it, open on both ends. It showed clear signs of use, but it would serve its purpose well.

He popped open the lube, pouring it inside the toy before he sat it down to the side. Then, he poured the slick stuff all over his shaft, smearing it around with both hands. Of course the action made him twitch and moan, toes curling up as he held his head back. The coolness of the lube along with its smooth texture always gave him a boost, especially when it mixed with the excessive amounts of precum he made.

Simon sighed in relief when he aimed the toy at his tip, taking no time to shove it down straight to his base. Sure, half of his meat jutted out the other end, but he moaned out loud nonetheless, thankful that Dave wouldn't be up to hear him. He could feel the build up now. He was getting to the fourth and final stage of this potion. It made him much, much more productive. He worked quick, stuffing his mouth with his penis once more, going down as far as he could manage while jacking himself off with the toy at the same time.

The shivers were becoming more intense. He felt his arms getting sore, but he banished the care for that. As much as he wanted to continue, the main thing he wanted was his climax. And it'd be messy when it finally came. Simon moaned, his back arching up as he held himself in place, letting the toy do the rest of the work, both lube and pre cascading from the toy and down his swollen balls, forming a little puddle between his legs as he began humping upwards into both the fleshlight and his mouth. He gulped down another mouthful of pre, bouncing on the bed a little as he closed his eyes in anticipation.

It was like a wildfire that roared deep inside of him. It flooded him with an inexplicable warmth that had one outcome. A muffled moan, the locking of his muscles, a firm throb of his cock, and Simon was done. Orgasm hit him like a train, his dick flexing firmly in his mouth, delivering a shot that nearly filled his mouth in one go. It was followed by several more, making his cheeks puff out. Simon tried his best to gulp it down, gripping his cock tightly while turning his head, the pouches within his cheeks filling up with spunk as well.

And yet, despite his best efforts, Simon had to pull off with a gag, cum pouring from his mouth before firing off straight in the air, splattering back down onto the bed while Simon jacked off, panting, moaning, and whining as he released his profuse load on the bed, himself, and a bit on the floor.

By the time the spurts were done, Simon had fallen onto his back, breathing heavily as he let the afterglow take ahold of him. Normally he'd hide away, or rush to clean up the mess, but no. Without the chance of anyone seeing him, he just stayed there, catching his breath. So satisfying, and yet so exhausting… He wiped his forehead, sighing as he sat up a little. Now that arousal wasn't fueling his every action, he could fall asleep properly.

But as he started to rise off of his bed, a thought occurred to him. If no one would be back, he had the night to himself… and he had two more potions ready to test… Simon bit his lip, looking over to his night stand. His night was just beginning.