I pressed the button with the girl silhouette and felt a warmth radiate around me as the machine hummed to life and millions of tiny tendrils of energy forced their way slowly around and around every square inch of my body.
I felt my flesh slump downward, inward and in some cases upward and even outward, into some impossible invisible mold which compressed and rearranged me. I felt like butter melting away on a warm slice of toast, my body flowing into every crack and crevice and spilling out over the sides. Then another piece of toast pressed up on top of me like a warm blanket, covering me fully and smushing me up all nice and neat. Then some great invisible hand took hold of the top piece of toast and twisted it around in a big slow circle, pressing me down like a vice grip, tightening its hold on me more and more, squishing me up in between until my new shape conformed to a whole other arrangement. I felt the pressure release, the top piece of toast lift off momentarily as though some powerful being were lifting it to observe its handiwork, then I was covered once more and felt myself squeezed in further still. More and more compacted down into the invisible mold.
This time when the mold broke loose I felt a slick wet layer of goo drip down my body, some of the stuff pulling off me like taffy. Long slick strands of the stuff pulling away from new and sensitive areas of my body. Gobs of it clung mercilessly to my nipples and streamed off into space, sending shivers up and down my spine as I felt it tug, tug, tugging itself free and off it went. Off like a sticky bandage, leaving behind soft sensitive pink nipple flesh.
Long tendrils pulled away from my crotch, sending prickly tingles all throughout my abdomen right up into my new little flat tummy.
I was a girl - a beautiful young woman. Nude. My clothes had been stripped away with the rest of the excess matter sloughed off my old male body.
Looking at the machine's controls I noticed a blue button with a male silhouette on it. It seemed this was my way back to normal, if I so chose to return.
The transformation machine clunked to a halt and the door opened. I was free to leave now if I wished.
