Disclaimer: I do not own Harry Potter

Throughout the years Fred and George have built up a reputation for pranks. Here are the many things that Fred and George may not do, under any circumstance, at Hogwarts.

1. I may not convince Neville Longbottom that Snape stole Trevor to use for a potion.

"Have you seen Trevor anywhere?" asked Neville, "I can't find him."

Fred started grinning wickedly,

"Neville didn't you know that Snape stole Trevor to use in a potion?" he asked.

"Yeah," George chimed in, "you better go to his dungeon and get Trevor back before Snape cuts him up." Neville gulped,

"I'll go get him immediately," he whispered and ran off to the dungeons. A few minutes later, they heard Snape's furious roar,

"WEASLEYS!'

2. I may not go around calling myself James Potter, especially not in front of Snape.

George was walking around Hogwarts quite contently. He had pulled off yet another incredible prank on Snape. As he was making up plans for his next prank, he heard the voice all Gryfinndor's hate, the voice of Severus Snape.

"What have you done to my lab Weasley? Tell me right now or you'll be in detention for a month!" George pretended to be affronted and said,

"That's James Potter to you, Snivellus." Snape was so shocked that George got away before Snape could yell,

"WEASLEY, DETENTION!"

3. I may not call Professor Dumbledore Gandalf. I must refer to him as Professor, Headmaster, or Sir.

"Well, George, we're back at Gandalf's office again, aren't we?" remarked Fred.

"We are indeed, Fred. Remember to show him his due respect." replied George. As they got to his office, they prostrated themselves in front of him and shouted,

"Fred – and George – at your service, sir." Unfortunately for them, McGonagall was standing next to Dumbledore and shouted, "FRED, GEORGE, DETENTION! THAT IS NOT HOW YOU SPEAK TO YOUR HEADMASTER!"

3a. On a related note, I may not sing "Far over the Misty Mountains Cold" while going to Gandalf, er, Dumbledore's office.

Fred and George were just innocently walking along, not at all planning another prank, when they bumped into Harry.

"Hey there Harry," shouted Fred, "Where're you going?" Harry groaned, rolled his eyes, and replied that he was going to Dumbledore's office.

"Excellent!" remarked George, "We will accompany you." As Harry watched in confusion, the two locked arms and began to skip while singing,

"Far over the misty mountains cold, To dungeons deep and caverns old, We must away ere break of day –"Unfortunately for them, they were interrupted by a very annoyed looking Snape.

"WEASLEYS, DETENTION!"

"But, Professor," George whined, "That's not in the song."

"DOUBLE DETENTION! NOW GET OUT OF MY SIGHT NOW!"

3b. On yet another related note, I may not transfigure a sword and pretend that I am Thorin, or any other member of the Company for that matter.

George woke up one day and decided he needed to pull yet another prank. He called Fred and told him about his idea. A wicked grin appeared on Fred's face. They both transfigured swords and hopped out into the Great Hall. George cast sonoros on himself and shouted, "Behold! I am Thorin, and I have come to take over this castle." Professor McGonagall sighed and looked at George, "You may not pretend to be Thorin and run around waving swords. DETENTION!" Then Fred piped up,

"What if we pretend to be Fili and Kili?"

4. I may not tell Luna that the Nargles are taking over the world.

Fred was walking along when he felt a strong urge to pull a prank on somebody. But who? Then, he saw Luna and grinned. Perfect.

"Hey Luna," Fred yelled, "Don't you know that the Nargles are taking over. Luna gasped,

"Really! Oh no! I better pack my things and move to Australia. I told everyone that the Nargles are coming, but they wouldn't believe me. Now they'll be sorry." And with that, Luna ran off.

As Fred started laughing heartily at Luna's gullibility, he heard Professor Flitwick come up the hallway. Flitwick glared at him and said, "Mr. Weasley, you may not convince other students to move to Australia. DETENTION."

4a. On a related note, I may not tell Luna that the Crumple-Horned Snorcack has been found in Australia.

George was laughing hysterically as Fred told him about the prank he had played on Luna. He decided he could one-up Fred. He went up to Luna, and said,

"Luna, don't you know that the Crumpled-Horned Snorcack has been found in Australia?"

"Really, she exclaimed! I better go there at once. I'll call daddy and pack my bags." She said as she dashed off to the common room.

As George started laughing heartily at Luna's gullibility, he heard Professor Flitwick come up the hallway. Flitwick glared at him and said, "Mr. Weasley, you may not convince other students to move to Australia. DETENTION."

5. Regardless of my personal feelings, I may not call Umbridge a toad. Even if she does look like one.

As George walked by laughing, he saw Umbridge. Umbridge scowled. She hated the Weasleys. She knew they were behind the pranks. She looked at George, felt an unreasonable surge of anger, and yelled,

"WEASLEY, DETENTION FOR A MONTH" George turned to look derisively at Umbridge.

"I'm sorry, Umbridge" he crowed, "but toads can't give out detention." And before Umbridge had realized what he had said, George was gone, laughing with glee.

6. I may not tell the Ravenclaws that there is a secret library inside the Slytherin common room.

Fred yawned as he attempted to figure out a new prank. Then he had the perfect plan, and he raced out of Gryffindor tower. Soon he found who he was looking for, a Ravenclaw.

"Hey Anthony," called Fred, "Don't you know that there is a secret library in the Slytherin common room?" Anthony looked up unconvinced.

"Yeah, right. This is just one of your stupid pranks again, isn't it?" Anthony said.

"Of course not Anthony," Fred claimed, "we would never pull a prank when it comes to learning." Unfortunately for Anthony, his love for reading won out over his common sense.

"How do you get into the Slytherin common room?" he asked.

"Simple," crowed Fred, "just gather up all the Ravenclaws and attack Slytherin Tower." A few minutes later, the voice of a very angry Snape could be heard,

"WEASLEYS, DETENTION"