I hold Dr. Phelps in my hand, looking down at his 12 inch tall muscular body as I process the knowledge I received from him. None of it makes sense--the colored liquids seem to be produced by a strange mix of science and something more...occult. "The blue formula worked nicely for you," I comment, speaking with the big man's lower, deeper voice. I recall how Doogie looked before he took it, and then after. Even now he was still quite nicely muscled, but only a foot tall. "Hmm, but in all your experiments, you never mixed blue and green, did you? I wonder what that would produce?"
I stride out of the showers with Doogie grasped in my hand. I set him down on the sink as I dry myself off, grinning at the mirror as I watch the enormous muscles of the giant man I'm now inhabiting. He's huge beyond belief, and I'm controlling him, from my strange place in one of his nuts. I'm extra careful as I dry those off, but still I feel it keenly--it feels incredible as I gently dry off the nut with my tiny body in it, and the big man's cock responds visibly, becoming raging hard, despite having just fucked the doc minutes earlier. I flex my giant arms several times, watching the impossibly huge mounds of muscle rise up at my command, like basketballs under the skin. I nearly cum at the sight of it, but I clench down hard, leaving my big dick trembling with excitement.
Once dry, I look down and see that Doc has vanished. "Doogie?" I ask, "Where are you hiding?" I look around, wondering where the little guy could have gotten to. I look around me, and see some movement out of the corner of my eye. His small, muscular body is scaling the wall, using the grout between tiles as a handhold. I chuckle and grab him off the wall. He struggles for a moment, then goes limp in my hand, giving up. I bring him up so he's inches away from my face. "Cute. Don't do that again," I warn.
I walk out of the locker room, striding through the gym, my oversized erection leading the way. Eyes follow me as jaws drop. The men working out are huge in their own right, but none of them come close to my massive size. I bounce my giant chest a few times before I walk out, showing off.
I take Doc down the hall, knowing my way through the various corridors and rooms due to the knowledge I siphoned out of him, heading for his office. I don't mind the stares as I walk past--most of the staff here got used to seeing strange things a long time ago. Still, my size is remarkable, and they watch me go with varying emotions, depending on the viewer: shock, curiosity, revulsion, lust. At last, I arrive in Doogie's large office, and lock the door behind us, after squeezing through it.
I go to the special fridge on one side of the room, and open it to see its full of red and green vials. I pull out a small green one, and uncork the top. I hold it up to Doogie's lips. "Drink," I command. He tries to push it away, struggling against the vial and against my grip. I use one finger to press against his little, muscular stomach, applying pressure until he gasps. I quickly tilt the vial, green liquid flowing into his mouth, some of it streaming down his face as he chokes on it. But moments later the vial is empty, and most of its contents are in Doc's stomach.