Disclaimer: I own nothing in this story. The brilliant beyond brilliant J.K. Rowling created all of these characters, and a lot of the plot.

Chapter 1: Severella

Sirius pressed his body up against the stone wall, praying that the suit of armor to his left was hiding him from view. He held his breath, afraid that any sound would draw Filch to him.

Damn it, James, you always have to have the cloak, Sirius thought bitterly. Granted it was his, but still, Sirius always seemed to get screwed over when it came to these little midnight excursions.

The pocket of Sirius's robes stirred, and a small rat poked his head out and looked up at Sirius. Sirius made a motion down the hall with his thumb, then picked up Wormtail and put him on the floor. The rat took off down the corridor, skittering into the shadows.

Sirius leaned back against the wall, waiting for Wormtail to come back with the all clear. He only had to wait a few seconds, and the rat came back. Sirius scooped him up, and Wormtail jumped into his pocket, signaling that Filch was nowhere to be found. Sirius moved quickly down the hall and ducked into the empty charms classroom.

"It's about time," came James's voice from the shadows. "We've been here 20 minutes already."

"We had a bit of a run in with Filch," Sirius explained. He pulled his wand out of his robes. "Lumos." The light from the end of the wand lit the room, and Sirius grinned at James's shadowy form. "But we got it."

James's eyes lit mischievously. "Excellent," he said. He looked eagerly at the paper bag Sirius was clutching in his hand. "It's the last thing we need, and the potion should be ready."

Sirius peered into the back of the room. He could just make out Remus's form, and he appeared to be kneeling over a cauldron.

"Hey, you want to bring that back here? I want to get this done, I've got loads of studying to do," Remus said, turning to Sirius.

"Study, shmudy," James said, rolling his eyes. "Our exam isn't even until Thursday."

Remus lifted an eyebrow. "That's tomorrow."

James looked startled, but covered it quickly. "I know that," he said as he rolled his eyes. But as soon as Remus had looked back down at the potion, James turned to Sirius. "We'd better get this done bloody fast," he muttered.

Sirius brought the bag to Remus and pulled Wormtail out of his pocket. He placed the rat on the floor, and before he knew it, Peter was standing in its place. James, Sirius and Peter peered into the cauldron. Remus pulled a jar filled with powdered unicorn horn out of the bag Sirius had handed him and put a pinch of it into the cauldron. The potion, which had been a light shade of blue, fizzed and turned a bright pink. Remus smiled, looking very pleased with himself.

"It's perfect," he said. "Now all we have to do is slip it to Snivellus somehow."

"We could put it in his morning pumpkin juice," James suggested. "That way he'll have to suffer all through the day."

"How are we gonna do that?" asked Peter.

"We can use the invisibility cloak," said Sirius. "I'll do it. I'll just go in, put the potion in when he's not looking, and the run it back up to the tower."

"Sounds good, thanks Padfoot," James said. "Now, er...we should prolly get back upstairs so Remus can study for that test…" he trailed off, strolling towards the door.

"Yeah," Peter laughed, "because we all know James did that ages ago."

Remus put the jar back into the bag. "Are you going to return this, or are we going to keep if for our stash?" he asked.

"We may as well keep it. Dexter won't notice if it's gone anyway," said Sirius. Their potions professor had a habit of leaving his storage closet unlocked, and the Marauders took advantage of his oblivious nature fairly regularly.

The four boys cleaned up their mess, then crept quietly out of the classroom, the invisibility cloak barely covering three of them and a rat. They had to move extra slowly through the halls in order to keep themselves hidden.

"I think I'm just going to go to sleep," said James when the four of them arrived back in their dormitory. "All that potion brewing exhausted me." He gave a dramatic yawn.

"You didn't do any brewing," laughed Sirius. "If I remember correctly, it was Moony here who did all the work."

Remus rolled his eyes. "Story of my life," he said, but he grinned.

"Aren't you going to study?" asked Peter, looking slightly concerned. "The exam is first thing in the morning."

"I'll do fine," said James, shrugging. "After all, in order to do well, don't I need a good night's rest?"

Sirius laughed. "How you ever became Head Boy is beyond me, Prongs," he said.

James grinned. "It's because I'm intelligent, responsible, caring and an overall model for the students," he recited.

Sirius snorted. "I think if the students in the school modeled themselves after you, Hogwarts would fall apart within a week," he said.

"Damn straight," said James proudly. He had changed into his pajamas by now and was climbing into bed. "But I guarantee I ace tomorrow's test."

The next morning, the four boys awoke and dressed for the day. James, Remus and Peter walked down to breakfast together, followed closely by an invisible Sirius. Under the cloak, Sirius was holding a vile of the pink potion they had brewed the night before.

When they arrived at the Great Hall, Sirius crept over to the Slytherin table while the other three went to sit with the Gryffindors. Luckily, Snape was already seated, and was drinking pumpkin juice from his goblet. Sirius walked up behind him, and when Snape turned his head to talk to the guy next to him, he quickly poured the potion into the goblet. Looking around to make sure none of the Slytherins had seen his hand, he moved swiftly from the Hall. When he was out, he broke into a run, wanting to make it back in time to see the results.

Meanwhile, at the Gryffindor table, James, Remus, and Peter were discussing their plot.

"Do you think he got it done?" asked Remus, looking over James's shoulder to the Slytherin table. So far, Snape looked normal.

"Of course he did," said James confidently. "Padfoot wouldn't let us down. Do you know how long it takes to work?"

"Not sure," replied Remus. "I wouldn't think more than a few minutes."

The three of them continued to keep an eye on Snape, but after five minutes, they saw no change.

"I wonder if something went wrong?" said Peter, looking worried.

"Oh yee of little faith," said a voice from behind him. The three boys looked up and saw that Sirius had returned. "Do you really think I couldn't manage to slip Snivellus a little potion? Honestly, you must not know me at all."

"So you did it, then?" asked Remus.

"Of course." He looked over at the Slytherin table. "Has he taken a drink yet?"

"Yeah," replied James. "We've just been waiting."

"Well good, then I didn't miss the action," said Sirius, grinning as he sat down. "I think we're in for a good show here, gentlemen."

Suddenly, a yell came from the Slytherin table. The four marauders looked up quickly, and each of their faces broke into identical grins. Snape had jumped up from his seat, wearing a very shocked expression. The entire hall erupted into laughter. Snape's robes were bulging at his chest as though he had just grown breasts. Everyone in the hall was pointing, and Snape's face grew very red.

"What the-?" he started, but hadn't finished before he clapped his hand over his mouth. His voice, normally very oily sounding, was now high pitched and girlish.

Everyone in the hall continued to laugh, and Snape looked over at the Gryffindor table, where the Marauders were laughing harder than anyone. Snape stumbled back from the Slytherin table, glaring at the Gryffindors. He stormed forward towards their table, his robes billowing behind him, wand out and ready.

"You," he growled as he reached the Marauders. "You gits did this."

"Nice tits, Severella," snorted James through his laughter.

"You bastard," spat Snape. He raised his wand, but Sirius was too quick.

"Expelliarmus!" he cried, and Snape's wand flew into the air and landed in front of the Head Table.

"What is going on?" came the voice of Professor McGonagall from the Head Table. She marched down and picked up Snape's wand. She handed it back to him, then looked at the marauders. "Who is responsible for this?" she asked.

"Responisble for what?" asked James innocently.

"Mr. Snape's...well, what has just happened to Mr. Snape. Who is responsible?" McGonagall's eyes were blazing.

"You mean he hasn't always had boobs?" asked Sirius.

Snape's face reddened again and he crossed his arms over his chest.

"What's wrong, Severus?" James asked. "Don't you like them?"

"They're niiiice, eh?" Sirius said, waggling his eyebrows. "Probably the first ones you've touched, I imagine."

"I'm not finding you very amusing, Mr. Black," McGonagall said sharply. "Now I want you to tell me who did this, and I want to know now."

"How should we know?" asked James. "We were at our table, just eating our wonderful breakfast, and Snape jumped up and started yelling at us. We didn't do anything wrong."

McGonagall turned to Snape. "Mr. Snape, do you have any idea who would have done this?"

"Them!" Snape squeaked, and Sirius snickered at his voice.

"Do you have any proof?" asked McGonagall.

Snape's eyes narrowed. "No," he said quietly.

"Well, get to the hospital wing, then," she said. She turned to the Marauders. "If we have any more trouble from you, any at all, you'll be sent straight to the headmaster." With that, Professor McGonagall followed Snape out of the Great Hall.

James grinned at his friends. "Once again, we get off scott free," he said, leaning back looking very satisfied.

"I was worried," said Peter, the color coming back to his face. "I thought we were caught for sure."

Sirius snickered. "C'mon, Wormtail, do we ever get caught?" He took a bite of his waffle. "That was great. I never get tired of harassing that slimy git."

"We should get to class," Remus said, standing up. "Our exam starts in 20 minutes, and I know the rest of you didn't get any studying done last night."

It was true; Sirius and Peter had both followed James and gone to bed shortly after getting back to the dormitories.

James waved his hand in the air casually. "I already know all that rubbish," he said. "I don't need to look at it."

Remus frowned, then turned and left. Wormtail looked anxiously after him, then got up and followed.

When they had gone, Sirius resumed eating his breakfast. "So, Prongs," he said through a mouthful of food. "How are things going with the fair Miss Evans?"

James looked down the table at Lily. She glanced up at him and he smiled at her, and she lifted an eyebrow at him. He winked, and she smiled back.

"Just fine," James answered. He was still proud of himself for finally convincing Lily to go out with him. They had been together for three months now, and she finally seemed to have fallen for his charms. "Lily and I are actually going to her house for the holidays," said James.

Sirius raised his eyebrows in surprise. "You're not going home?" he asked, looking slightly put out.

"Well, I'll be at home, yeah," James replied reassuringly. He knew Sirius was planning on going to his house for Christmas. He didn't want to stay at Hogwarts alone, and he definitely wasn't going home. "I'm just going to Lily's for a night...two, tops."

"Oh," said Sirius, looking relieved. "Well that's cool...you gonna stay in her room?"

James grinned. "Well, I'm hoping so," he replied. "But if not, I can always pack my cloak."

"Smart man," Sirius said, glancing down the table at Lily. "She gonna go for that?"

"You'd be surprised what she goes for," said James, winking.

Sirius grinned. "Lucky you," he said. He looked at his watch. "We should probably get going though...bloody exam."

"Yeah, but it's the last one, and then we're free until next term," said James. "And we get to go home tomorrow."

"You get to go home tomorrow," said Sirius darkly, standing up.

James looked sympathetic. "My home is your home, you know that Padfoot."

Sirius nodded darkly, but didn't reply, and the two boys walked to class in silence.

A/N: I'm going to try to update this story as much as possible, but be patient with me please! I'm in college and I have lots of homework and a job. However, reviews just may get me moving faster, so please do so!