Ash was only vaguely aware of the door closing, as the sensations had really reached a fever pitch. His newly formed genitals were tenting the front of his (thankfully larger) jeans, and it was... they were just... so SENSITIVE. He could feel his dick growing more engorged as it rubbed against the cotton, and he just HAD TO see! Quickly unzipping, he let the pants fall to his ankles, hardly noticing how his thighs and calves had filled out under some thick, curly leg hair, or how enormous his feet had become.
"Ohmygod." he muttered, taking in his huge cock where it protruded from it's nest of dark pubic curls. At least he thought it was huge, not having ever actually seen a dick before! He was a 10 year old girl! Or, at least, he had been a few minutes ago!
Testosterone was coursing though his body as his changes finished up, and the tingling centered in his throat and head as his skull enlarged, his jaw pushing out and growing more angular as the last of his baby fat melted from his cheeks. Stubble sprouted, and he raised his gaze back to the mirror to find he had a 5 o'clock shadow under a much longer nose and thicker brows. His hair was still up in a lose bun, so Ash assumed it had remained the same length, although the color had darkened slightly from Ashley's dirty blonde to a more medium brown.
"I guess it's a 'man bun' now," he said, coughing slightly and amazed at the gravelly nature of his changed voice. "Holy shit."
The mirror showed the reflection of a large, young, adult man, standing with his jeans around his ankles and upper-body muscles stretching a tight blue t-shirt to it's limits. He looked like a guy that regularly worked out, while Ash could see a slight resemblance to her (formerly) older brother and dad in the shape of his nose and eyes.