It was then David realised something.
"Hey, bro," said David, " how come you can see me turning into a monster?"
And Dennis said, "Well, actually, it's because.... I'm becoming a monster myself!"
"Huh?" Said a confused David.
He watched in surprise as Dennis started to take his clothes off, stripping down to his birthday suit.
Then, he watched as changes similar to his own started on his brother - Dennis gained the same things his brother got before him:
Dennis gained scales on his body, save for his chest, and lost the pinkie toes from his feet, and gained pointy bat-like ears.
Unlike David, Dennis' scales were a reddish-orange colour.
And, like David, Dennis' penis had shrunk too.