I do not own anything Harry Potter, no money is being made from this story, so please don't sue!

Snape's BIG mistake

Chapter 1:Cho

It was a day like any other for Hermione Granger. She woke up, went down to the Great Hall to eat breakfast with her two best friends, Harry Potter and Ron Weasley. Then they headed down into the dungeons for their least favorite class with their least favorite professor, potions with Snape.

They entered the class room and took their normal seats. This year like all the rest, they had potions with the Slytherins. Five minutes after the start of class Snape had still not entered the class room.

"Maybe he's sick!" Harry said hopefully.

"Or maybe you-know-who killed him!" said Ron.

"Don't be stupid, he's probably just scaring a first year in the halls" Hermione answered.

As soon as the words left her mouth, Professor Snape swept into the room in his normal fashion. There was no need for him to tell everyone to quiet down, for no one said a word. They were all too busy staring with their mouths hanging open at their professor. Dressed in his usual black trousers and robes, still pale as ever, but, his hair, instead of the usual black greasy mop it was clean, long… and bright red.

"What are you all staring at! Your instructions are on the board, get to work!" Snape bellowed.

With that, the entire class jumped as a whole and started on their potions for the day. Professor Snape usually walked around the class room sneering at all the Gryfindors taking points off for any reason, but today, he sat behind his desk shooting dirty looks at the Golden-Trio

As soon as class ended, it was a mad dash to get out of the room before anyone lost control and laughed in their Professors face. Once out in the hall, everyone stopped in their tracks and doubled over with laughter.

Getting herself under control Hermonie dragged Ron and Harry through the dungeons and towards the stairs. "Oh my GOD! Who do you think DID that?" she asked her friends.

"I don't know, but who ever did it is my hero!" Harry proclaimed.

"Did you see those looks he was giving us? I think he thinks WE did it." Said Ron.

"But why would he think it was US?" Harry asked.

"Well that's simple, isn't it?" Hermione stated. "His hair was the exact same color as Ron's!"

"Well, I didn't do it!" Ron cried.

"I know you didn't Ronald, but that's probably the reason he thinks it was us! Lets go, we don't want to be late."

The rest of the day passed without incident. Professor Snape was missing from lunch and dinner, but, who could blame him?

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It was later that night that Ginny walked up to Hermione in the common room. All she did was put a small piece of paper in Hermione's hand, and walked away.

Confused, Hermione watched Ginny walk away, and then remembered the paper in her hand.

All it said was this:

"If you thought today with Snape was funny meet me in the room of requirement at 11 tonight."

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11:00 came quite quickly for Hermione, she then snuck out of the common room and went to the room of requirement. When she opened the door, all the lights were out and all of a sudden someone reached out and grabbed her and pulled her into the room.

"Before we allow you to see who we are " a voice said "you need to swear that you won't tell anyone what you see or hear in this room."

Not having much of a choice, Hermione said yes. and then the lights all came on. As soon and her eyes adjusted to the sudden brightness Hermione saw Ginny, Luna, Cho, Susan, Hannah, Pansy and Millicent. With Hermione there now, there were two girls from each house.

"Uh, hi everyone… what's going on?" Hermione asked.

"Well, we'll start at the beginning, Pansy, care to tell your story to Hermione?" Ginny asked.

"Sure. Now, as you know Snape is our head of house, but, what you DON'T know, is that Snape is actually my uncle. He's my mothers brother. Now, he was at our house this past summer, and he decided to listen to a conversation I was having with my mother. He heard me talking about Draco, and well, he then told Draco what I was saying to my mother!" Pansy continued, "Now, every girl knows that the fastest way to end a relationship with a guy is, to either, say you love them, or start talking about having a wedding. And, I was talking to my mother about what kind of wedding I would want. So, basically, Draco owled me, and told me to stay away from him."

Hermione never liked this girl, and she was always so mean to her, but that was awful, no matter who it was done to.

"Ok, so you decided to get a little revenge on Snape. But, what does that have to do with all of us? And all the houses?" Hermione asked.

Pansy then looked at Millicent and Millicent continued with their story.

"Well, a few reasons actually. Firstly, every house is known for something, you know loyalty, brains, and all that. So, by having someone from each house, we have four different points of view for our ideas. Secondly, because its common knowledge that, well, not all eight of us get along, and therefore wouldn't help the other avoid getting in trouble. So, if anyone were to think that one of you pulled a prank, one of us can say that we saw you elsewhere, therefore, you wouldn't be able to get into trouble." When Millicent finished, she was out of breath and had a goofy sort of smile on her face.

Hermione was speechless. It seemed so stupid, yet, when you thought about it, they were right. She would never stick up for Pansy or Millicent. But then, a question popped up.

"Wouldn't they think its odd that we're sticking up for each other now?"

"Well, what we're going to do if something happens and one of us is caught, or someone thinks its us, one of the people here that would normally stick up for you will, and tell the professor asking questions they were with you, AND one of us that wouldn't help you out was there also. So when the professor ends up asking them, they would say that you WERE there, but they would act upset at having to defend you." Ginny said.

"Wow, so you guys really put a lot of thought into this." Hermione said, "it was YOU guys who did that to Snapes hair?"

All of the other girls flashed huge smiles and nodded.

"However," Pansy said, "there are a few pranks that we have to do in front of Snape, so he WILL see who you are, BUT, Luna had a great idea, and we've already started the potion. Since if Snape sees you, no matter what another student will say, it wont matter, so, for those pranks, we have Polyjuice Potion! So one of us will drink it, do the prank with Snape, while the other is with Professor Dumbledor. Oh and there are other little things that, at the most, will just get points taken away, and for those any of us can do them, without Polyjuice or anything."

"Oh, this is going to be fun, I can't wait!" Hermione exclaimed.

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It was one week since the prank with Snapes hair. The girls had sat around for a couple of hours, and came up with quite a few jokes to play on their lovely Professor.

So, the girls picked their next prank, and Cho said that she wanted to do it. She stood by the stairs leading to the dungeons, waiting for Snape before breakfast, with the other girls scattered around the hall discreetly watching.

Finally when Snape emerged, Cho ran up to him and asked with a straight face, "Professor Snape? Does this make me look fat?" and twirled in front of him. While Snape just stood still frozen, Cho screamed, "OH MY GOD! YOU THINK I'M FAT!" then turn and ran into the Great Hall, up to the Head Table and stood crying and trembling in front of Professor Dumbledore and said, "P- Pro- Professor Snape s-said I look, that I look F-FAT!" then sat on the floor crying hysterically into her robes.

By now, Professor Snape had made his way to his normal seat at the head table with every woman in the room glaring at him, and even some of the males.

Luna went up to the front to help Cho to her seat, but turned and glared at Snape and said, "You know, Professor Snape, it's not like YOU'RE thin!" and walked off with Cho to the Ravenclaw house table.

Now, one would think doing that once would be enough. Or that if you were to do it again, it would be after you changed into something different, but, since the girls really wanted to screw with Snape, Cho didn't change a thing.

So, at lunch, Cho found herself waiting by the same stairs waiting for the same professor, to ask the same question, LOOKING exactly the same.

"Professor Snape? Is this any better? Does this make me look fat?" Cho asked

This time, Snape spoke up before Cho could run off crying.

"Miss. Chang, since you have yet to change, I would have to say that you look EXACTLY the same as you did this morning." Snape spat out.

"Then, I DO still look fat!" Cho wailed. Once again she turned and ran into the Great Hall, and right up to Professor Dumbledore, only this time, she wanted to get Snape in a little trouble.

"PROFESSOR! Professor Dumbledore! I was j-just st-s-standing with my friends, and, and, and then, Professor Snape just walked right up to me, and… he-he told me I was FAT and to g-go on a d-d- diet!" she wailed.

Professor Snape had walked up to the Head Table and listened to Cho.

"EXCUSE me, Miss Chang? I believe you asked ME if you looked fat, I didn't just SAY IT!" He growled.

"SEE! He just admitted to you that I'M FAT!" Cho cried then turn and fled the Great Hall.

"Now Severus, don't you think you are being quite mean to Miss Chang? She is, after all, a teenage girl, and as such can be insecure about her looks." Professor Dumbledore said to Snape.

Hearing that, Snape stood back up and left the Great Hall.

Cho had wanted to do the same at dinner, but Snape was catching on, and didn't come to the Great Hall for Dinner.