Fred and George Weasley were sitting in the common room, bored out of their minds. The constant pitter-patter of the rain made both of them drowsy and and eager to get out of the stuffy castle as they tried to alternate between completing their Transfiguration essay and their Divination Dream Diaries.

"We've been loosing our edge, Fred" said George suddenly

Fred yawned and stretched his arms, discarding a piece of parchment which he had been doodling on. "You're right. But we've both done every prank we could think of and Percy-"

"-Is threatening to write to Mum." George finished his brother's sentence. "But we need something to keep us and our fellow Hogwarts students to from dying of boredom. We need something that will really set Percy off the edge."

The portrait hole swung open and a group of first years suddenly entered, slightly damp from the rain but in high spirits.

Fred and George looked at each other.

"You don't suppose-" Fred began

"-That first years-" George continued

"-will make up-"

"-For a big-"

"PRANK!" The two finished together enthusiastically

"George, are you thinking what I'm thinking?" Fred asked conversationally

George snorted. "Of course, dear brother!"

"You get the notice-"

"-And you get the model." George smiled triumphantly at his twin

"This will be our greatest prank ever!" Fred said gleefully

Six o'clock, Gryffindor Common Room

Every First-Year student
Should come to the Common Room
8 pm Tonight for
A Lesson
-Fred and George Weasley

The notice was put up on the Gryffindor's bulletin.

"What do you reckon it's about?" a first year asked his friend

"Dunno, but I think we're going to find out soon!" his friend replied

Eight o'clock

A large number of first years gathered around the common room. Fred and George had worn their school robes and they had also prepared a model of Hogwarts that was now sitting on a table in front of them. They brandished their wands together and grinned at the crowd.

"Good evening ladies and gentlemen," Fred began, "You are now here to witness the first ever 'Complete Savages Class' taught of course by Fred and George Weasley."

"Since our lesson right now is sort of a rough draft, we will not be charging you with anything. But remember, future lessons will be charged two sickles per person and this will be for a good cause!" George continued. The good cause was for the funds of Weasley's Wizard Wheezes merchandise.

"And for our first lesson," Fred bellowed, "THE END OF THE WORLD!"

The first years in front of them gasped. A few stifled sobs and many of them held their friend's hands tightly.

"Right," George pulled up his sleeves, "You will know that the end of the world is coming when the earth begins to shake. This is what muggles call, earthquakes." He waved his wand and made the Hogwarts model shake, with a few trees from the Forbidden Forest falling spectacularly on the tiny model pumpkin patch.

A first year girl squealed and hid her face in her robes, her blonde pigtails shaking slightly.

Fred took no notice of this and proceeded. "Next will be giant tsunamis." He flicked his wand and made a huge wall of water engulf the model Hogwarts, the Quidditch Field, the lake, the Forbidden Forest and Hagrid's cabin.

"Third, balls of fire will ruin Hogwarts." George brandished his wand and balls of fire rained down on what was left standing of the model.

It really did it this time. The first years started panicking and running around the common room, knocking down chairs and desks. Most of the girls were crying and some were screaming 'I DON'T WANT TO DIE!'. A group of them suddenly started praying fervently, nervously checking the window to see if there were any balls of fire that were descending from the sky.

George and Fred howled with laughter but quickly stopped when...

"WHAT THE (insert your choice of swearword here) IS GOING ON IN HERE?" Percy came downstairs, glasses askew and in his pajamas. When he spotted Fred and George shaking with laughter, he pointed his wand at them.

The twins began to run...