Lily Evans was livid. She was positively, absolutely infuriated to the point where she couldn't think straight. Her vision was blurred with anger as she quickly made her way out of the portrait and down a flight of stairs, heading straight for the source of her wrath.

For awhile, she had thought that this year would be different. After all, she had made it to December without being mad at him.

Lily had thought he had changed. He had began acting responsibly ever since the beginning of the year. She thought there would be no more pranks, no stupid ideas, no running out after hours. He was Head Boy – he knew better than to walk around after hours when he was supposed to be patrolling.

But no, she was wrong.

When that fourth year had gone up to her and said that he heard the Marauders were going to play a prank on the Slytherins, she had almost lost it. Instead of taking it out on the fourth year, Lily hastily spun on her heel and walked out of the portrait hole.

She was nearing the dungeons when she caught the sound of muffled voices. Taking a few steps closer to the sound, she stopped at the corner of the corridor and took a glance around the corner to see if it was them.

She saw darkened outlines of a group of people were standing about ten meters away, huddled together and talking quickly.

"Here, take this-"

"No, you keep that. I have enough."

"You only have five pieces."

"That's enough."

"You can definitely use more. Here."

"It's getting all over my hands."

"Oh, stop complaining, Wormtail."

"But it's-"

"We'll put you in a red suit and a beard."

"I never said anything."

"Exactly."

Those voices confirmed her suspicions; the fourth year was telling the truth.

Without even thinking of the consequences, Lily strode right up to the group, jaw set in a hard line and her eyes narrowed in a glare.

Sirius saw her first; his eyes widened at the sight and he immediately began nudging James next to him. James turned around and didn't have time to say anything, because Lily was already right in front of him, opening her mouth to begin the chastising.

Lily found her words cut short as James's hand reached out and completely covered her mouth, only letting a muffled cry escape from her lips.

"Okay, I understand that you're here to yell at me," James began, speaking in quiet tones. "And you're welcome to do so afterward, but right now, you need stay quiet. We don't want the Slytherins to hear us, do we?"

Lily narrowed her eyes even more at him, restricted from frowning. James sighed, turning back to Sirius. "She's not going to cooperate."

Of course she wasn't going to cooperate. They were pulling a prank on the Slytherins and she was just supposed to stand there and let them? James was Head Boy – he wasn't supposed to be doing these things in the first place.

Sirius shrugged. "Just keep your hand there."

She glared at Sirius who just laughed underneath his breath.

"What about the Silencing Charm?" Peter asked in a hurried whisper.

Lily thought about trying to bite James's hand, but then realized that she couldn't even get her mouth open enough to use her teeth. James looked at her and then shook his head. "I don't want her to kill me when this is over with."

Lily glanced over at Remus, trying to make him see reason. Remus was very reasonable; she knew he didn't like this. But he just gave her a sympathetic look and didn't say anything.

She was about to start screaming against James's hand when Sirius took a step forward and swung around excitedly."Here they come!"

James took a step to the right and Lily followed him, eyes cautiously watching the scene in front of her.

Slytherins were coming out of the trap door leading into the common room, talking amongst themselves. She recognized all four of them. They were the Slytherin prefects who always gave her a hard time at the meetings.

James grinned and said, softly, "Five, four....three, two...one."

Something began to fall from the ceiling, landing on the Slytherins' heads. They shrieked, looking around wildly and covering their heads. Something black and round kept falling from the ceiling as the Slytherins began running down the opposite corridor, trying to escape the objects.

"Ho, ho, ho...you've been naughty!" A deep, loud voice suddenly rang out, seeming to come from the ceiling.

Lily tried to look up, but James's hand was forcing her to look ahead. After a couple moments, the Slytherins had disappeared from view and all that was left were the black pieces on the ground.

All four boys immediately burst into laughter and James finally let go of Lily. She rounded on them, folding her arm, complete with a glare. "What were you thinking? That was the most idiotic thing you could have done-"

James rolled his eyes, grabbing onto Lily's arm. "Hey, Lily, don't worry. It wasn't my day – it was Sirius's."

Lily raised an eyebrow, shrugging off James's hand. "What day are you talking about?"

Sirius grinned. "By now, you've surely heard of the Marauders' Days of Christmas." Sirius paused, taking in the look on Lily's face. "Okay, judging by your reaction, I guess that's a no. It's where all four of us have our own day. If it's your day, you pick something festive to do. It's a great deal of fun."

Lily frowned, gesturing behind her. "Pulling pranks on Slytherins is not fun."

Sirius snorted. "To you. But, to us, it's something to look forward to every year."

There was a long silence as Lily gave Sirius a disapproving look and tried to walk ahead of them. How could they think that that was fun? It was awful to ruin someone else's day for your enjoyment. What were they thinking?

"Hey-" Someone was pulling on her hand. With a loud sigh, Lily turned around to meet the bespectacled face of James Potter. He smiled at her, tugging slightly on her hand. "Do you want to join us this year?"

She should've said no. The horrified look on Sirius's face should've justified her answer of no. But Lily couldn't help but wonder what else they had planned. What did James and Remus and Peter have planned?

And so, she found herself saying an affirmative.

"Yes."

The massive grin on James's face could have possibly been more terrifying than her answer.

Originally supposed to be a one-shot, here is my Christmasy (or just a holiday, really) four-shot. It's based on the song of the same name by The Remus Lupins. Each chapter will be each Marauders' day and will probably be very short (only around 1,000 words or less). Chapters will be written quickly. I may even finish tomorrow or Thursday.

Thanks for reading!