AN: A lot of these one-shots will be based off of random headcannons that I find on Pinterest. But sometimes those posts don't come with the original link to the original content. I don't want to give credit to someone who's just stolen someone else's idea, so if you know the original post for these, please let me know! I don't claim to own the characters or the overall idea, only my writing.
At Hogwarts, there was one undeniable truth amongst the students, and even the staff. The Marauders were the biggest pranksters to hit the school since Gideon and Fabian Prewitt. Everybody knew this. Everybody knew that they played prank after prank, that they terrorized both the staff and students with their antics. They somehow managed to traverse the school with ease, never running into the staff or the students. Even Filch hadn't manage to catch them yet. Only McGonagall had been a match for the four boys. But she was only one witch after all. And she had a whole school to help look after. So the Marauders pranks went mostly unopposed. And nobody but themselves knew how they did it. How they got away with so much.
Nobody… Except Lily Evans.
"James! Tell your boyfriend to stay off of my sweater, he keeps getting dog hair on it." Lily said, glaring at James Potter.
James, who was sitting in a plush red chair in the common room, looked up from his book. Glancing around he made sure his voice wouldn't carry.
"Lily, someone could hear you!" James replied.
Sirius smirked from the chair next to James. He hadn't meant to get hair on her sweater, it was an accident. Honestly. But he was curious as to how James would respond. Defend his best friend or placate his crush?
"No one is around, and I've got a charm on the stairwells to alert me in case someone starts coming down. Now, really, look at my sweater! It's covered in dog hair! How would I even explain this? I don't have a dog… Or a cat for that matter. If you want me to keep your little secret, tell me how I'm supposed to explain this!" Lily ranted, waving her hair covered sweater around in the air.
"Uhhh…" James started to say something, anything really, but he had no idea what to do or how to make Lily happy again.
"It's my fault, Lily Flower. Got my hair all over. Leave lover boy here alone. Give me all of your scorn!" Sirius said, a smirk still firmly placed on his face. The fire crackled and popped in the few moments of silence before Lily turned her ire towards Sirius.
"Just what were you doing on my sweater, Black?" Lily glared at him, trying to wipe away some of the hair. She couldn't think of a charm that would help her with this. Both boys could see that her next stop would be to the library for some extra charms research.
"Well, you see, that perfume you wear? Padfoot loves it. Couldn't help myself from rolling around on your sweater. Probably shouldn't have left it in the commons anyway." Sirius said, running his fingers through his hair like he didn't have a care in the world.
But that story couldn't have been further from the truth. The truth was Peter and James wanted to see what Padfoot looked like with a sweater on. The boys had sweaters that were too big for Padfoot, so Sirius grabbed the smaller, more feminine version that was just lying there in the common room. Remus, knowing it was Lily's and knowing what her reaction would be like, just grinned and went back to reading his runes book. The boys didn't think the owner would miss the sweater, they only needed it long enough to take several pictures of the black dog in it.
"Black…" Lily started angrily. But Sirius was no longer sitting on the chair by the fireplace. In his place was a shaggy black dog.
"Don't even think…"
Padfoot jumped down from the chair and padded over to Lily, giving her his best puppy dog eyes.
"Just because you're adorable doesn't mean I'm not still angry, Black." Lily said, her hands on her hips. James hid his face in his textbook, hoping to muffle the laughter coming from his mouth.
Padfoot cocked his head to the side, one ear flopping over, staring up at Lily. Lily sighed and threw her arms down.
"Damn it Black, you can't do this every time!" Lily said as she bent down and scratched behind his ears. She laughed as his tail swished back and forth on the floor.
"You suck," Lily laughed. "Stay away from my clothes!"
Sirius licked her face and ran back to the chair he was sitting in. By the time Lily wiped the slobber off her face, profusely shouting her disgust, Sirius Black was once more a human looking like he hadn't moved an inch.
"You boys are lucky he's such a cute dog." Lily said, her anger dissipating for good.
"Sirius!" A new angry voice yelled down the stairs from the boy dormitories. Lily waved her wand to turn off the alarm that triggered as someone barreled down the stairs.
"Sirius! Where is it?" Remus shouted, angrier than Lily had seen him in a while.
"Uhh…" Sirius said, his face going a bit pale. It was now James' turn to smirk as Sirius' crush came to berate him. Oh how the tables do turn.
"Where is my stash of nice chocolate that I've been saving for weeks?" Remus asked, standing over Sirius. James looked at Sirius wide eyed. Remus was a kind person. He took everything in stride. He didn't care when Purebloods made fun of him for being a Halfblood. He didn't care when people called him a nerd or a swot. He didn't care when the Marauders copied his homework instead of doing it themselves (potions is a really hard class Moony, honestly!). But if there was one line you never crossed with Remus, it was to never, ever take his chocolate.
In a flash, Sirius Black was once more Padfoot. His tail was wagging and his eyes were big and round. Padfoot whined and butted his head against Remus's leg. Remus slowly and gently pet the top of Padfoot's head. Padfoot barked happily.
"I'm going to kill you when you change back."