Dennis watched in horror as his stubby penis slurped right into his body, vanishing out of existence. In the place it used to be, out came a small slit.
"What in all of Earth is happening to me?!" Dennis said, horrified.
Then, Hundreds of goose bumps bulged on his skin, flattened, and pressed together, forming rough ridges. The scales mostly retained the skin colour, but with a slight reddish tinge to them.
Then, Huge spines grew on his naked back, like David before him, except that his spines were blue, like the scales on David's monster form.
Dennis was looking less and less human, and more and more lizard monster.
"Wow." Dennis said to himself. "I'm changing, alright."