Disclaimer: Do you really think that if I owned this I'd be busy writing fanfic? Nah....I'd be shopping! ;)
Vincent Crabbe and Gregory Goyle stared dumbly at each other. No one had left the room, and many screams had been heard. They squinted at each other as if to say, "Let's get out of here quickly before something really really bad starts to happen to us."
Of course, they didn't actually say that. That many words in one sentence would have cause permanent brain damage. They were just about to turn tail and run when a very familiar voice called, "Last two. Get in here."
Slowly, they turned around and walked back in front of the door. They paused for a moment. The voice shouted, "Well, get in here!" The gave each other dumbfounded expressions and dashed into the empty classroom.
They looked around but saw nothing special. A few boxes. One window. They looked at each other and began to head back to the door.
Suddenly, the room began to swirl for the fifth time. The stones weathered down to sand and the sky became a cloudless blue again. Where the boxes had been a sign appeared reading, "WELCOME TO THE DESERT".
Crabbe and Goyle looked around dumbly. Crabbe waddled over to the sign and almost intelligently began to read.
"Dessert!" He said after about three minutes.
"Yum! Food!" Goyle responded. "Where?"
Crabbe shrugged.
They began walking around in the sand, searching for dessert. Within five minutes they had barely enough energy to crawl around, trying to find the dessert. At seven and ½ minutes they both had passed out from pure exhaustion.
The desert swirled back into a room and the two were floated out on two stretchers a piece. There was laughing coming from behind the boxes. "Oh yeah! The ploggart and I are off to reek havoc on the world!"