I don't own Harry Potter, the list or anything mentioned in this fic. This is a slight crossover, but I hope you enjoy! This has no set time, so it might change around a bit. And Fred will never die! I know this has been done a million times, but I wanted to try it.

Prologue

Gryffindor Common Room was quiet. It was slightly unnerving. Everyone had gone to bed. Fred and George Weasley were utterly bored.

"You know, I've been thinking," George began. "The Marauders left their legacy at Hogwarts. A recording of their great deeds in a beloved map."

Fred nodded. "I see where you're going. And we should do the same."

"We should make a list, a list no one has dared to make. Full of rules that should never be broken."

"And we should break every single one of them." Fred continued his twin's sentence. "I like your way of thinking Forge."

"Why thank you Gred."

"I have a feeling we might need some help though. I'll notify our contacts in America. The Stolls."

"We should probably alert Emmett and Jasper Cullen too," Fred suggested. Both twins had identical evil grins on their faces.

"Then let the madness begin."

…...

1) Professor Flitwick's first name is not Yoda

Professor Flitwick was sitting at his desk correcting essays when two figures with brown cloaks and tan tunics burst into his office.

"Master Yoda!" one exclaimed.

Not again, Flitwick thought.

The other figure continued, "The Separatists have kidnapped Master Fred and Master George Weasley. They will be unable to hand in their homework tomorrow!"

Flitwick sighed. "That's the third time you two have said that to me this month. My name is Filius."

...

2) I will not give Hagrid Pokémon cards and convince him they're real animals

Harry, Ron and Hermione were going down to visit Hagrid. Harry knocked on the door of the hut and called out, "Hagrid, it's us!"

Hagrid opened the door.

"I've got somethin' to show you all!" he said excitedly.

They entered the hut cautiously. To their surprise and relief, there was nothing other than Fang inside.

"Look!" Hagrid pointed to his table. A pile of cards lay there. Harry picked one up. It read "Pikachu, Level 20."

"That 'un can use a thunderbolt!" Hagrid beamed. "I've decided I don't want a dragon anymore. I want a Pikachu!"

...

3) When Death Eaters are attacking Hogsmeade, I shall not point at the Dark Mark and shout "To the Batmobile, Robin!"

Fred was trying to fight off some masked Death Eater. But he still had a rule to break.

"To the -Protego- Batmobile -Stupefy- Robin!" he shouted, raising his arm to point at the Dark Mark.

Harry shook his head and yelled, "Now is not a good time!"

...

4) Any resemblance between Dementors and Nazgul is simply coincidental

"But sir-"

"Mr. Weasley, any resemblance between Dementors and Nazgul is completely coincidental," Lupin said.

"Sir -"

"No."

...

5) Any bet or challenge that require me to remove any part of my clothing is forbidden.

-The content of this drabble has been removed to prevent mental scarring.

...

6) I am not allowed to paint the house elves blue and call them smurfs.

"Where's a smurf when you need one?" George sighed.

"A what?" Ron asked.

"Dobby!" Fred called. Then Dobby, painted entirely blue, Apparated straight into the Gryffindor Common Room.

"Yes Master Weasley?"

...

7) Should I chance to see a Death Eater wearing a white mask, I should not start singing anything from The Phantom of the Opera.

"The Phantom of the Opera is there, inside your mind!" George sang loudly.

"Shut up!" a high pitched male voice came from behind the white mask. "The delivery of the other masks was late, so I had to borrow this one from Lucius Malfoy when he used to do theatre! It's not my fault!"

...

8) I will not call Dumbledore "Santa Claus" during the Christmas Holidays.

"I would like to wish you all a good Christmas," Dumbledore said, finishing his speech.

A voice shouted up from the Gryffindor table, "Get on with the food appearing Santa!"

...

9) I will not put Muggle fairy book in the History section at the library.

Madam Pince was walking along the aisles in the library. Some students seemed determined to put books back in the wrong place. The needed to be in alphabetical order after all.

Madam Pince was checking the history section when the spine of a very bright book caught her eye. Madam Pince knew every single book in the library but she didn't recognise this one. She pulled it out.

"The Princess of the Flower - the Lost Buttercup."

Suddenly she threw it up in the air.

"Incendio!" she screeched. "Burn! Burn you foul excuse of a book!"

Whoever put that thing in her library was going to pay.

...

10) I will not send Snape a bottle of shampoo for Christmas.

Snape didn't see the point in Christmas. He had only gotten presents off one person as a child, but now she was gone, the whole thing seemed meaningless. Now no one gave him presents, which was why he was extremely surprised to find a small present at the foot of his bed.

But his eyes narrowed once he saw its distinctive shape. He ripped off the paper, mashed it into a ball and threw it into the fire, pretending that it was the sender who had dared to send him strawberry scented shampoo for Christmas.

For anyone who doesn't know, the Stolls are from Percy Jackson and the Olympians (if you haven't read the books you should) and the Cullens are from Twilight. The Cullens and the Stolls won't be in it much, but I need them for some. Please review!