"It must have been my imagination," Mr. Mendes said. The boys noticed that he started to increase in muscle mass, bones thickening in addition to his muscles. His shoulders nearly doubled in size.
The boys were watching. Mr. Mendes didn't seem to notice at all.
He didn't notice at all when his fingers started to fuse together, leaving a thumb and two fingers. The nails became black and grew, taking over more of the finger. Mr. Mendes' shirt changed into a wife-beater, not ripping with his increasing muscle mass.
"Err, Mr. Mendes?" Ric asked, "Are you feeling any different?"
"Of-huff-course I'm not," Mr. Mendes huffed a response, "I've always been like this." Mr. Mendes head had changed into a bull's head, and a nose ring had even appeared.
"Are you boys feeling alright?" Mr. Mendes asked, as a loud "CLOP"-ing sound was heard coming from his new hooves. A quick glance down showed that Mr. Mendes' shoes vanished, only a pair of small leg-warmers remained instead of socks on his very large hooves. He still wore shorts, but they had a hole for his tail.
"Err, you seem a little...different." Josh said.
"I don't look any different." Mr. Mendes said, his voice now much deeper. "Is there something wrong with you boys?
"Err..." Ric leaned over to Josh. "He must think he was always like this."
"What are you boys up to today? Do you need to go to a doctor?" Mendes asked.
"Uh," Josh said.
"Good morning Mendes!" Another voice said.
"Morning Ricard!" Mendes waved.
Josh and Ric looked around and gasped. Mendes' neighbour, Ricard, wasn't a man anymore. Well, sort of. His legs were gone, replaced with a snake tail. Unlike what one thought of when they heard 'naga', the rest of his body was covered in scales like a snake, and instead of a human head he had a snake's head. He now had to be about fourty feet long!
"Oh crap," Ric said, "We must have changed the entire world!"