He set his tf to be instant, so, TJ was going to immediately change into the monster form he described until the monster transformation was completed.
For length of transformation duration, he selected a hour.
then, a message popped up. it said, "Shall we initiate tf now?"
'Yes/No'
he clicked 'yes'.
almost immediately, he felt a sharp tingle.
the tingle spread all over his body, from the top of his head to the tips of his fingers to the ends of his toes.
Then a message popped up;
'Operation complete. ENJOY YOUR TF.'
Suddenly TJ looked down at his bare feet, and saw that his feet were getting bigger. His arms and legs grew too, making him seem taller. His toes gained claws.
"Hey! What's happening to me?" he exclaimed, as one of his hands changed, becoming that like it was on the internet. and the same thing happened to his other hand too! His eyes merged into a cyclops eye.
His skin turned blue, starting on the ends of his toes, and gradually covering him. In addition, his hair turned from light brown to bright green.
TJ had completely transformed into a monster.
His pants and underwear slipped down his thinning legs and landed on the floor. He stripped off his jacket, shirt, and hat.
It was kind of unnerving to be butt naked as a monster, but thankfully, he'd found out on the site that a person's private parts disappeared when they turned into monsters.