Audreyblaine: Thank you so much for your review, I'm so glad you think it's a good story. And I appreciate you thinking I've managed to create believable characters. Thanks! Oh, and I checked your story, it's so funny! Keep it going.

Redsoxfan90210: Thank you for being such a faithful reviewer. It means the world to me that you review with every chapter to tell me what you think.

Pam: Thank you girl! It's such a compliment to get reviews from you seeing as I love your story. I wait for them so thank you for taking the time after each chapter.

NOTE: I am actually kinda nervous about this chapter since comedy is a great challenge for me. I really hope this is the greatest prank ever played. Therefore, this time I am actually begging all of you to tell me what you think. Please, this is a challenge for me and I need to know if it's good enough to keep up. Happy reading!

The Greatest Prank Ever Played

After much consideration, the marauders had come to the agreement that D day would be on Halloween. They wanted it to be a day remembered for many years in the future. Peter had been awfully excited about being able to spend time with his best friends. He had drifted apart from them after Severus Snape had convinced him that James, Remus and Sirius didn't really care for him and only spent time with him out of pity. Peter had suspected it was that way for a while now, but after they had come searching for him a few weeks ago he had stopped thinking about it. After all, if they were worried enough to look for him before planning the new prank they had to care a little bit, right? Yes, he wouldn't fret on it anymore. The marauders were back full force. And he was in for some serious fun.

'October 31, 1977 is going to be a day to remember', thought Sirius Black as he smiled to himself in front of the mirror. His black hair was short again, but still fell into his eyes with a sort of casual elegance. His grey eyes sparkled with excitement.

"Isn't it a beautiful morning, Moony?", he asked re-entering the seventh year boys' dormitory. Remus Lupin was sitting on his bed re-reading yesterday's Daily Prophet, probably looking for some news about what was happening with Voldemort out of Hogwarts.

"It is, my friend. We are lucky to be able to put our plan in motion on such celebrated day. I'm glad full moon didn't ruin our plans", he added in a whisper.

"I hear you", Peter celebrated from one of the corners of the room. "Well, I'm going down to get breakfast. Are you coming Padfoot?". Sirius stomach grumbled answering for him and the three friends laughed. "I believe that was a yes?"

"It was", Sirius said walking towards the door. "Oh and Moony… hurry up if you want to catch Kali before classes, will you? I won't keep her for you like last time". Remus smiled, it was good that Sirius was finally coming to an understanding with the matter. Kali and Lily didn't seem to bother him that much since James and him had started to dedicate more time to their friend. And Sirius was starting to have a strong friendship with Adie Vance, which was also a very good thing, since the girl made the tallest marauder laugh repeatedly.

Remus Lupin stood up and grabbed his school robe. He had showered earlier and had gotten back into bed just to read some more. He was carefully studying every edition of the paper now. He was convinced that it was a good way of being prepared for what was waiting for them outside. He checked his reflection in a mirror hanging next to Sirius' bed and headed for the Great Hall. He loved to be able to catch Kali in the mornings. She always looked specially lovely with her ponytail recently done. He smiled to himself while going down the stairs. His friendship with her was progressing smoothly and that made him happy. He could tell that she enjoyed their time together and all those long talks they shared in front of the common room fireplace. His heartbeat fastened just thinking about it. He really liked the girl. If only he could act on it. James had encouraged him to do so. To tell her everything if he ever found out that things could go beyond friendship, but he couldn't. She would probably hate him afterwards. Who could be with a monster like him? And if she didn't hate him, it was too dangerous. It wasn't even a matter for discussion. So he treasured times like this. Their shared breakfast in the Great Hall. Their quiet times working together in the library. Whatever he could take.

"Hello everyone", he greeted reaching the far corner of the Gryffindor table where they always sat. Casually the only seat available was the one next to Kali so he took it happily.

"Morning Remus", the young blue eyed witch greeted back. "we were just betting on who would take longer to come down, you or James".

"Really? Well, who did I favoured?".

"Me", Lily said smiling. "And Kali".

"Really Moony, you were barely awake when we came down", Sirius said somehow annoyed that he had lost. "Did you even shower?"

"Of course, mate! I showered before you even got up! It's just that I don't take as much time as you do getting ready". Sirius faked a shocked face.

"Are you calling me vain? Peter, is Remus calling me vain?"

"I think he is", Peter responded almost laughing at Sirius fake hurt.

"I didn't say anything Sirius, you did". Remus said before turning to Kali once more. Just then, James appeared followed by a few giggles from the near tables.

"I'm glad to see everyone is getting on better" he said making room for himself next to Lily.

"I'm glad too, you know", Remus added in almost a whisper to Kali.

"Me too… Remus, I've been meaning to ask you something. Do you reckon you can help me with my Transfiguration essay during our free period after Potions?". Kali asked avoiding Remus's eyes. He looked at her happily.

"Of course! But are you sure you want my help? James is so much better with it-"

"No! I mean, yeah I'm sure. I want you to help me, not James. Besides, he'll probably be busy with Head Boy duties".

"OK. I'll meet you at the common room after Potions".

"Great. Thank you", she stood up to leave with her two friends but stopped to give Remus a peck on the cheek. "You are the best". Remus blushed a dark crimson and ducked his head while picking at his eggs. Peter, James and Sirius laughed.

"Oh Remus", Sirius said in a high pitched voice. "You are the best. Do you want to marry me and have a lot of kids?", he batted his eyelashes at the blushing werewolf. Remus just smiled and kept eating. After a while the marauders stood up to go to class. They had planned to skip lunch and go to the kitchens later for a snack so they could use the time setting the last details of their plan into motions.

That afternoon Remus got together with Kali to help her with her essay. They finished her work quickly. Remus suspected that she didn't really had too much trouble with the subject as she had said. That had scared him. If she had feelings for him too it would be so much harder to stay away from her. At least if his affections weren't reciprocated he was safe. She was safe. He would have to think more about that. But for that short time, he had enjoyed chatting and laughing with her. Of that he was sure.

---

Dinner at the Great Hall was always a main event on Halloween night. House elves seemed to care for every little detail, from the decorations to the rich food. All four tables were overflowing with each and every student of Hogwarts. The teachers' table was also complete with every member of the staff. Professor Dumbledore and Professor McGonagall conversed softly occasionally stealing a few glances at the young witches and wizards in the place. Their conversation seemed serious but everyone was too excited about the celebrations to notice.

"Do you think it is wise, Albus, to invite them to join so young?", McGonagall asked the old white haired Headmaster. "They will be barely 18 years old".

"I am aware of the fact, Minerva, and I worry about it as much as you do. But we need more people and I know there are some fine specimens of brave wizards here in this room", Dumbledore responded, the twinkle in his blue eyes gone for a moment. McGonagall nodded in understanding. Both teachers looked at the table were the marauders and other Gryffindor students were sitting. Everyone was having a wonderful time, they could see.

"It feels as if we were cutting their adolescence short", she added. Dumbledore nodded but said nothing. He had just noticed that James Potter, Sirius Black, Remus Lupin and Peter Pettigrew were unusually calm and collected. Each staring at a blank point in front of them. Their hands hidden under the table. For a moment the smart wizard wondered what was happening, but dismissed it as nothing. He was about to continue his conversation with his colleague when a weird feeling invaded him. He closed his eyes for a moment to try and collect himself and when he opened them again he almost fell off his chair. He was no longer sitting at the teachers' table, but on the first year section of the Ravenclaw table. He blinked rapidly. For a moment everyone was silent and still and then all hell broke lose.

A high pitched scream was heard from the teachers' table followed by some others coming from every part of the Great Hall. Various students stood up and started running around the tables.

"This is unbelievable mate", Sirius clapped his hands while laughing hard. "Look! Look at Snivelly! I wonder who's the poor bastard that got trapped in his body!".

"I can't believe it worked", James added while looking everywhere. "We actually did it!".

"Guys remember we should act like other people if we don't want to get caught", Remus Lupin reminded them while trying not to burst in laughter. "I'll be Sirius so he'll be me. And James you do the same with Peter".

"OK Moony", Peter said taking one of his hands to his hair and messing it like James so often did.

"POTTER!", They heard a male voice calling from the Slytherin table. A second year approached them quickly, something oddly familiar in the way he walked. "BLACK!".

"Excuse me", Peter said, "Do I know you?".

"Not you Pettigrew", the small boy said reaching the table, "I was talking to Potter".

"I am Potter", assured Peter doing a great performance. "Who are you, little one? Are you lost?". The boy's face went red and he hissed.

"I am Professor McGonagall! Now Potter make it stop! You are Head Boy for Merlin's sake".

"I'm sorry professor, but I don't know what you mean", Peter said smiling.

"Yes professor, we don't know what you are talking about. We are as clueless as you", Remus added. "And by the way, I love your new style. A little less scarier than usual".

"Lupin! What has gotten into you?".

"Sirius, professor. That's what's gotten into me!", Remus said laughing harder.

"Just wait until this is over, all of you. I'll give you detentions for the entire year!", the little boy -McGonagall- said while pointing his finger at each of the marauders. He turned to leave and collided with a taller boy from Hufflepuff who almost ran over him. The boys just laughed harder as they watched Professor McGonagall trying to gain everyone's attention as a second year. Although Remus had to admit that even as a child she was a little scary. "Headmaster!", they heard her calling.

"Yes?", A little boy from Ravenclaw approached the boy from Slytherin. "Minerva?"

"Albus! Is that you?".

"Well yes. I must say Minerva, you look quite changed for someone who was just sitting with me five seconds ago", Dumbledore said smiling. The twinkle back in his eyes, full force.

"Well Headmaster. I could tell you the same thing. It was Black and his gang, Albus. I know it", she said with a red face yet again. She was so angry she was about to explode.

"Now, now Minerva. We do not know for sure that they had anything to do with it". Although both teachers weren't aware, the scene they created had many of the students laughing hard. The two young boys were conversing seriously, the one from Slytherin waving his hand notoriously. Even with switched bodies, many had been able to tell they were Dumbledore and McGonagall.

Meanwhile, at the teachers' table, Dumbledore's body was looking pale and confused. Probably the little boy trapped in it didn't even understand what had happened. Hagrid, approached him and asked.

"Professor? It's me. Lily Evans. Are you there?". Dumbledore just started crying. Lily sighed. How the hell was she supposed to find the Headmaster among such mess. Or any of the other prefects for that matter. She walked towards the marauders.

"Remus?"

"Yes", Sirius said sobering up.

"It's me, Lily".

"Blimey Lily. You are looking lovelier than ever. I love what you did to your hair!", Sirius said forgetting that he was supposed to be acting like Remus. Hagrid fumed and yanked Sirius' arm.

"You are not Remus! You are Sirius. You- YOU DID THIS!".

"I don't know what you mean Lily", James said without any laugh left in his eyes. If Lily caught them they were dead and what was even worse: she would hate him for ever.

"I mean that you haven't changed and that can only mean one thing", she glared at them and they stepped back in fear. Lily's personality and Hagrid's body wasn't a good combination at all.

"Now Lily don't say that. This affected us as well. I'm Peter and Sirius is actually Remus", James explained.

"Pl-ease! Do you actually believe I would fall for that? Remus would never be this insensitive. Do you have any idea how uncomfortable it is to be in a guy's body, much less a semi-giant one!".

"Relax, Evans", Remus said trying to act like Sirius, "You could be worse".

"Don't even try, Remus. You haven't changed and even a blind witch could see it. So don't go all Sirius-like on me", Hagrid said before throwing his arms in the air and turning around. The four friends shared a look and knew they were probably going to pay really high for this prank. But that didn't stop them from admiring their work. Remus Lupin felt a hand on his shoulder and turned around. A hard fist connected with his stomach.

"I'll never forgive for this, Lupin. Never!.", Snape told him with tears in his eyes. Remus looked at him for a moment before realizing who was the 'poor bastard' trapped in his body.

"Kali?"

"YES! It's Kali, you moron. Look at me!", Snape stumped his left foot hard on the floor and crossed his arms in front of his chest, ready to throw a tantrum. If it wasn't for the severity of the situation, Remus would have laughed cheerfully. "I'm greasy!".

"Kali, you're not-", Remus stopped because of the second fist making contact with his stomach.

"Don't you even try to say anything", she said before turning and running away.

The others watched as everyone in the Great Hall ran around trying to identify their rightful bodies. A seventh year boy from Slytherin was slapping Adelaide Vance's face while her hand wandered towards some very girly places.

"Stop doing that, you pervert!", he said. To the boys it was obvious that the boy inside Adie's body was having a little too much fun.

"I think it's time to end this", Remus said sadly.

"I believe Moony has a point", Sirius said grabbing his wand from the inside pocket of his robe. James and Peter following. The four boys chanted the incantation they had worked on for months and everything went silent again. This time when they heard their last names being called they knew McGonagall was royally pissed.