almost immediately, Doug 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.
he cast his glasses aside, as he could somehow see better without them.
Tj was shocked to see his dad was starting to take off his clothes.
He removed his lab coat, and pulled off his shirt. He kicked off his shoes, and peeled off his socks.
"Dad?" Tj said to his Dad, "what ARE you doing?"
"Well," Doug said, "If this is going to work, I'd better strip off; I don't want to get tied up in human clothing!"
He loosened his belt, and pulled down his jeans and underwear as well.
He put his clothes and glasses in a neat pile on the chair at TJ's computer desk, and stood, stark naked, in front of his son.
His penis dangled down, long, and pulsing.
After all, this was for science, and modesty was sort of silly when you were trying to show physical changes.
Speaking of physical changes, what was the first of the physical changes to happened.