Numerous Body Swap Stories

Becoming Derek by thetfchangingroom

"Are you sure this is going to work?" my boyfriend asked.
For our anniversary, my boyfriend Alex and I decided to try something new. I'd read online about a potion that could transform you into whoever you wanted for 24 hours, and I had the idea of turning him into Derek Theler for the day. We both found him easily the sexiest celebrity around, and were wondering what it would be like to try out his hot physique. "What's the worst that could happen?" I try to re-assure him.
"I could like... I don't know, die."
"Of course you won't die," I say, "I read some of the online reviews, they all say it works and that its super hot."
"And not permanent?"
"Nope," I said, though I got a little excited at the thought of having Derek Theler for a boyfriend. Alex was cute, lean and nice looking, but a little short. I loved him anyway though, and wanted to give him the very best transformation experience for our special day.
"Alright," he finally said, "here goes nothing!"
He downed the whole bottle and we stood there in his room, waiting. Nothing. "How do you feel?" I asked.
"I mean, I feel fine, but I don't feel anything- whoa!" That was NOT his voice that just came out of his mouth. Alex felt his throat with surprise. He had been speaking in Derek's sexy, laid-back surfer voice. His eyes widened. "Did you hear that?"
"Yeah!" I said, "that must mean it's working!" Alex was at eye-level with me, and it took me a second to realize he was getting even taller. I stepped back to get a better look at him. "Geez, bro, you're growing."
Alex looked down at his own body with confusion. And that's when the real changes stated to occur. First, his frame started to broaden. I heard cracks as his bones re-arranged themselves, and his face grimaced with a mix of pain and pleasure. I could see his features changing, shifting around and becoming more symmetrical... more like Derek's...
"Ugh... what's happening to me?" he groaned, as red hair started to blossom on his face. My mouth was agape as I watched his already tight, well fitting clothes stretch and tear over his muscles. Big like balloons, steadily inflating, prompting him to rum his big, meaty hands over them with curiosity. "Wow man, that feels... oh... UUUGGHH."
He let out a bellowing moan, and I looked down to see his legs, each one rippling with new growing muscle, snaking their way up to his crotch. I could then see the outline of Derek's monster dick fill Alex's pants. I mean, this thing must be massive. His zipper even started to go down as it continued to pump outwards, Alex growing sweatier and sweatier with every pulse.
"Oh... oh fuck man..." he panted, and I finally processed the fact that it was no longer my boyfriend Alex who was standing before me, but Derek fucking Theler, that cute look of bewilderment on his face as he looked down at himself and continued to feel his new muscles.
"Um, Alex? Alex are you okay?"

He looked up and rushed to the mirror, literally ripping off his shirt as he did. When he finally got a look at his reflection, he laughed, that dopey sexy Derek laugh, and turned to me in astonishment. "Holy shit dude, it actually worked! I'm actually Derek!"
He must have spent a good ten minute just checking himself out in the mirror there. Hey, I'm not complaining. I got to have my own personal celebrity muscle show. I laid back on his bed and started to jerk myself off. Finally, he turned away from the adonis reflection in the mirror to me on the bed, my hard dick in my hands.

"You enjoying yourself there?" He said, swaggering towards me with that cocky grin. I felt a bit of pre-cum drip from my penis as I nodded.
"So, you gonna help me out with this?... Derek?"
He got up onto the bed and started to crawl towards me. He brushed his face up against my thigh, and I shivered violently, suddenly overcome with the sheer pleasure of feeling Derek Theler's hot scruff against my exposed skin. He placed a hand on my leg to calm me, gently taking my dick in his other hand and slowly lowering his mouth onto it, never breaking eye contact.
God, his eyes. I'd dreamed so long of those deep, green gems staring lustfully at me. And now that they were, I almost didn't even notice his big gaping mouth moving up and down over my cock.
He proceeded to suck me off, slowly getting faster and faster until I was practically face fucking him. "WAIT," I yelled, and he slurped off of my dick and looked at me with a wide, puppy-dog gaze, a bit of my cum dripping from his mouth.
"What's wrong babe?" he asked.
"I think I'm close."
His confusion turned to excitement, and he got up off the bed and ripped off his pants and underwear. Holy shit, I thought to myself as I saw that monster piece of meat free itself from his briefs and wag around in the air like the tail of a dog. It must have been nine inches at least.
He reached for the lube in his drawer and squirted some onto his fingers. As he rubbed them together, his sweaty upper body muscles shaking and shimmering as he worked, a wave of delight and pleasure hit me. Wow, I thought, this is actually happening.
"I won't be able to go very long," I said as he got back onto of me, straddling me and rubbing the lube onto his ass and my dick respectively.
He shrugged and gave another cocky grin. "It's alright, we've got all day, remember?" And with that, he guided my cock into his lubed up asshole.
My head shot back as I was overcome with sheer euphoria. "GOD," I practically yelled as Derek Theler rode my dick, stroking his with one hand and pressing my chest with his other. I was inside Derek Theler. I was balls deep in Derek Theler.
At that very thought, my balls tensed up. "I'm cumming!" I warned him, but he only continued to ride. As I shot my load into Derek's ass, I watched as his face grew tense and he gritted his teeth. "GRRAAAAGGGH." He let out a big, manly moan as I felt my stomach suddenly grow hot and wet with cum.
Even after I'd emptied my last little bit of seamen into Derek's butt, he was still cumming, moaning longingly as his beat of a dick showered my chest with his hot juice. When he was finally done, we both sat there laughing, me still inside him.
I looked him in the eyes, and he leaned down to kiss me. I'd kissed my boyfriend many times, and many men before him. But none of it compared to kissing Derek in that moment right there. His stubble scratching against my bare face, the hot musk of his breath filling my lungs, his rough callused hand stroking the back of my head.
Eventually, it was time for us to both get cleaned up. He got up and went to the bathroom to get me a towel, and I watched as his ass giggled back and forth with every step. He disappeared for a few moments, then came back with a white cloth and a beaming grin on his face.
"That was awesome," he said as I mopped up his cum.
"Hey," I said, "we've still got 23 hours left. What else do you want to do?"
Derek thought for a moment, before looking down at me and rubbing his hand over my body. He smiled. "I'm sure I could think of a few things..."