I had entered the chamber where the experiment would take place
and took a look around, the room was enormous, roughly the size of
of a warehouse and every sound seemed to echo quite a bit.

I wasn't looking forward to the experiment although they said I'd be
well compensated and the changes would be temporary, so at the very
least it seemed safe.

A voice from a nearby speakerphone alerted me that the transformation
was starting as the collar around my neck lit up, my skin felt like it was
crawling due to the sudden tingling sensations, I felt a little bit dizzy as
well and I could hear strange sounds coming from my body. I came to
the realization that I was growing, my heart was beating fast as I paced
around the room, becoming taller.

My belly had been swelling up as well, in fact my thighs felt like they were
wider as my whole body was gaining girth. My skin began to change color
after hitting a certain size, taking on a purple color, but I noticed it was
alot lighter along my stomach and under my hands and feet, occasional
splotches showing up on my skin made me think I was turning into a lizard.

I felt like a giant as I stumbled around the massive room, getting used to
my continuously shifting weight, the loud rumbling my whole body was
making was echoing in the room and reminded me that I was still growing
rapidly, at that point my proportions began to change as the growth began
to affect the lower part of my body a lot more, I clutched at my massive gut
with my hands which had begun to fuse into two massively fat digits with a
swollen thumb, claws growing at their tips. I blushed at the sound of that
agitated belly.

The toes on my feet were fusing as well, becoming fewer, fatter toes, I moved
them about a bit to get a feel for them as the claws began to grow out. The
soles of my feet were becoming thick to better support the massive weight
of my body, they grew in size to help me keep balance as it progressively
became easier to stand still thanks to my massive stompers.

Next I felt the changes begin to affect my head, as I brought my massive
hands up to feel my new snout. Bit by bit it was getting longer, my ears were
going trough an inverse change, becoming miniscule and featureless. My
teeth were getting long and pointy, opening and closing my jaw a few times
to adjust to the new snout.

Finally I braced myself as my spine tingled, before I knew it, a tail had begun
to grow and stretch, eventually pushing against the wall I was leaning
towards. I could feel it as it trashed about which took some getting used to.
It felt so massive and thick, just like the rest of me at this point.

I had become a T-Rex, but as I continued to feel my features I felt like I
looked too docile, It was actually a bit embarrassing because it felt like I
looked more like a silly cartoon dinosaur, Maybe that was the idea and the
experiment was a success? Hopefully no one will have a chance to see me
like this before the changes wear off, they promised they would after all...