Thick Enhancement (Extended)

I learned my roommate was concerned about his cocksize when he started asking me about growth supplements, if anything could work. He was acting strange about it, acting as though I had the answer. I shrugged, telling him all of them were fake and there was no magic pill. Somehow that only made him angry, starting to act passive aggressive toward me from then on out.

As the month went on through, I noticed he quickly was packing on the pounds. His ass grew wider, shaking with each step that spread up to his softer stomach. His jawline disappeared, wrapping around his neck and rolling over the necks of his shirts. It was a nice sight to see, his clothes barely fitting. He seemed to have found what he was looking for, a more prominent bulge growing in his shorts.

That was about when I noticed my supplement 'Thick' seemed to be going faster than usual.

Finally one morning I heard him cussing in his room, prompting me to walk in and find him standing in just his boxers, a pile of his clothes on the floor. Despite the muscles on his arms, the rest of his body looked like a pillow, heavy pecs shaking above a soft belly, his beard doing nothing to hide his loose jowls. He shouted at me to fuck off before I asked him what was wrong.

Crossing his arms and turning toward me, he admitted to using my size enhancing supplement 'Thick'. He was wondering why the fuck it was making him put on weight.

I couldn't hold in my laughter. "Thick? Dude, it's a mass gainer! Only the possible side effects are enlargement and raise of libido." I replied, looking at his hard shaft. I couldn't help but admire the change, the side effects seeming to apply.

I stepped forward, placing my palm on his groin pinning his cock against his body. "I bet it feels nice though" I said, watching a shiver travel through his body and eyes growing wide. I easily through his new weight onto the bed and followed him down, my body easily supported by his thick body. I started tracing my fingers around his nips before pressing hard down on them. 

His chest began to shake, his muscles convulsing as electricity traveled directly to his head. He couldn't keep his head up, closing his eyes when his skull hit the bed."Fuck" He moaned, stretching out on the bed. I could almost see the wave of pleasure spreading through his body, watching as every bit of tension left his limbs.

I backed off enough to pull off his briefs, his thick cock springing out from his groin. There was no struggle as I lifted his legs above my head. Lining up my member with his plush rear I started to push in, my cock easily cutting through the soft mass. His tight hole gave way like playdough, encasing my stiff with his flesh. I couldn't help but let out a gasp feeling his hole accept me completely, his sphincter firmly clamping down.

He started to moan as I pushed in and out, his voice growing louder with each thrust. His body shook, trembling as I increased my speed until his entire body rippled from his stomach to his face. His eyes rolled back into his head, his breath heavy as I hit his prostate with each drive. He was rock hard, enjoying each moment in complete horny bliss as I fucked him stupid. I knew this wasn't going to be our last time, he'd learn to enjoy being my dumb boy from now on.