The first song is 'Old Time Rock And Roll by Bob Seger', the second is 'Black Sheep by Gin Wigmore' and the third is 'Mucho Mumbo (Sway) by Shaft'.

Disclaimer: I don't own the Teen Wolf charis, the Harry Potter world or the songs.

Chapter 2: Activities in the Common Room

Poking his head surreptitiously around the corner leading to the boys' dormitories, Stiles scanned the common room for any signs of Slytherins. It was absolutely barren, void of any life save for Stiles himself.

A grin splitting across his face, he set his iPod and speakers at the entrance, putting it on blast. "Yes, today will be good," he said, pressing play as he ran back down the hall. As the first cords of the song filled the cavernous room, Stiles slid into the hallway intersection wearing only his socks, Batman boxers and one of Scott's cloaks. He wouldn't be missing it anytime soon.

'Just take those old records off the shelf!' he shouted into his wand, the tip shooting sparks towards the ceiling, 'I sit and listen to them by myself!'

He moved his body to the beat of the music, dancing his way down the stairs. 'Today's music ain't got the same soul! I like that old time rock n' roll!' His shoulders joined vigorously in the movement of his body, his head whipping back and forth.

'Don't try to take me to a disco! You'll never even get me out on the floor! In ten minutes I'll be late for the door! I like that old time rock n' roll!' If singing into a wand could be sassy, Stiles sure could manage it.

By the end of the song, he'd made a complete circuit around the common room, nearly fallen over twice with how hard he was moving, and was wondering exactly how he'd managed to transfigure a chandelier arm into a flamingo. As the next song started up, he was pulling on his next persona, pressing his hand to his cocked hip.

'I got lots of jealous lovers that all wish they had me back,' he sang, running a hand down his body. His sass was on full blast and suddenly, he was regretting not looking up a charm for temporary long hair. 'Got a pistol for a mouth, my old mama gave me that.' He pressed a finger right below he lower lip near the corner of his mouth.

As the next words spilled from his mouth, he began to strut. 'Making my own road out of gravel and some wine. And if I have to fall, then it won't be in your line!' He shot out a finger, pointing at a non-existent participant.

'Everybody's doing it so why the hell should I?' He pointed to himself, looking confused and annoyed. 'Everybody's doing it so why the hell should I!' He was channeling his inner Braedon, the stubborn Slytherin who had an affinity for weapons and always seemed to at least have a knife on her person.

"Stiles?" someone called over the music just as Stiles was yelling along with it, 'I'm a bad woman to keep! Make me mad, I'm not here to please! Paint me in a corner, but my color comes back. Once you go black, you never go back!'

Startled, Stiles fell over the back of a couch in his rush to spin around. "Cheesy rice! Derek!" he shouted before he could stop his mouth.

Giving him the most confused look he possessed, Derek pulled Stiles to his feet. "Stiles, you do realize you're like white bread, right? You are nowhere near black."

"Doesn't mean I can't channel my inner black girl, she demands to have her spot light," Stiles snapped playfully, already moving to the beat of the new song, swaying his hips and twirling his wand as it spewed a small ring of blue flames.

Derek rolled his eyes.

"So, how did you get into the Slytherin common room?"

"Erica asked me if I could come check on you. She thought you were sick because you didn't meet her to go to breakfast this morning. She would have come herself, but she had to go see Melissa and she can't get into the boys' dormitories. So, you're just skipping classes then?"

Stiles smiled sheepishly, wanly. "I didn't mean to make her worry. I had an attack today in the bathroom while I was taking my shower. Then some of the other guys started getting in my face, and I kind of screamed at them before breaking down once they were gone. I didn't think I could do social today."

"Oh," Derek frowned, "Do you want me to leave then?"

"What? No! Who said that? Come dance with me, a good song is starting to play," Stiles said quickly, rushing towards the boy and grabbing his hands.

"I don't think-" Derek started, but Stiles cut him off.

"It's fine! Doesn't matter if you can dance or not, just move to the music!"

With the opening notes filling the room, Derek tried to force down a small smile as Stiles pulled him into a simple dance consisting of swaying back and forth, and doing something with their arms that Derek wasn't exactly sure how to explain. 'When the rhythm, rhythm starts to play, dance with me, make me sway,' Stiles sang to him, grabbing Derek's hips and forcing them to move in a way that was most definitely unnatural for the thirteen-year-old, 'Like lazy ocean laps the shore, hold me close, sway me more.'

Pulling Derek almost flush against his body, he laughed and started dancing around the other. 'When the rhythm, rhythm starts to play, dance with me, make me sway. Like the lazy ocean laps the shore, hold me close, sway me more.' If it had been anyone other than Stiles, Derek would have almost certainly been supremely uncomfortable with the entire interaction and/or ripped the other's throat out.

As Stiles danced away from him, Derek asked, "I've been wondering since I got here, but why are you wearing just boxers, socks and your cloak? Wait, is that… Scott's cloak?"

The song changed, a slow, sad song that didn't seem to belong to the album. "Why, yes, it is. Clothes are for the weak of heart and self-conscious of skin," Stiles said loftily, sliding to his phone and quickly changing it, "If I came to class in hooker heels one day, what would you do?"

"Ask you who you got the heels from, I'd suspect Lydia, then why you were wearing them in the first place, then wait to see if you'd fall over or break an ankle," Derek said without much thought.

Stiles grinned. "You really think I'd fall over? I beg to differ."

"I really hope you're not actually considering doing that."

"No, of course not. Why would you ever think that?" Stiles asked too innocently, disappearing in search of a t-shirt and maybe shorts, but probably not.

Derek shook his head. "Are you going to do this all day?"

"Just until people start to show up again, why? Are you going to stay and dance with me?" he asked almost jokingly. Stiles reappeared, his cloak gone and in its place, a Superman t-shirt.

Shrugging, Derek said, "I've got nothing better to do except for classes, but I'm feeling very non-social today as well."

"Then you've come to the right place. Kick off your shoes, and let's get dancing." Switching to a new song, Stiles threw himself into a new dance, dragging an only partly resistant Derek along.

…..

"I can't feel my legs," Derek growled, spread eagle on the common room floor, his shirt somewhere by Stiles' speakers, and his pants ready to follow, "What the hell, Stiles?"

Laughing breathlessly, Stiles pushed himself up, looking up through one of the windows where afternoon sun shone through the water. "Hey, you said you'd dance with me. No complaining, sour wolf."

"I didn't think you meant for four hours!"

"Well, now you know for next time." Crawling away, Stiles turned down the music and sat against the corridor wall. "Do you want to watch a movie?"

Sitting up, Derek glanced over his shoulder. "Like one of those moving muggle picture things? I guess so. It's not like we actually have anything to do."

"Dude, you live in Beacon Hills, one of the most non-magic towns around, and you've never watched a movie?" Stiles asked, appalled. Was he talking to an alien species or just a very ignorant teenager? He really couldn't tell. Shaking his head, he disappeared into the dormitories. "You have so much catching up to do."

"My family likes to keep to themselves. And I wouldn't say that Beacon Hills is one of the most muggle towns…"

"What do you mean by that?" Stiles reappeared, his arms full of wires, a projector, a small DVD player and a DVD case.

Derek shrugged, watching with curiosity as Stiles set up the projector. Where he was getting the electricity, he wasn't sure. Just like he wasn't entirely sure where Danny in Ravenclaw got his electricity to run his computers and cameras. He was almost positive that it wasn't legal in either the muggle or wizarding world. Actually, he wasn't entirely sure where he hid the entire set up. Oh, the mysteries of the muggle-borns. "There are a lot of magical families there, it seems, among other things."

"Among other things... very descriptive," Stiles said distractedly, pulling out his wand. He flicked it at a white blanket sitting on a couch. It lifted, spreading out, and fastened itself to the wall.

Derek watched the boy with wondering eyes. This was the boy who had been at Hogwarts for less than a year. This was the boy who'd been practicing magic for less than a year. This was the boy who still had magical outbursts almost on a daily! This was the boy who was second in their year, and could hex without a second's thought. "You're amazing," he whispered.

"What was that?" Stiles spun towards him, grinning like the sun he was.

"Nothing," Derek said quickly finding a seat in front of the screen, "What are we watching?"

"I'm thinking 'Moulin Rouge' just because I can't find my unscratched disc of X-men and I'm still feeling rather singy still."

"And what the hell is 'Moulin Rouge'?" Derek asked apprehensively, wondering if it had anything to do with the brothel in Paris.

Stiles grinned. "You'll find out."

…..

Frowning, Derek heard a sniffle from the other side of the couch. Slowly turning his head to the other boy, his mouth dropped open just the slightest bit. Stiles was crying. Stiles was fucking crying. "Why the hell are you crying?" he shouted over the singing of the couple and Stiles' thick mumbling along with the song, "We just started the movie!"

"You don't understand!" Stiles shouted back dramatically, rubbing at his eyes. "You won't understand till the end!"

"Then stop sobbing so I can watch the movie!" It was becoming hard not to laugh.

"Make me!" Stiles shouted childishly.

Sighing, Derek grabbed the boy, quickly whipped his face before shoving it into the couch. "There, I made you. Let's watch the movie."

…..

"Stiles, what the actual fuck is this?" Jackson snapped, interrupting said boy just as he was dipping a hand into a bowl of popcorn nestled between his legs. "What is a Gryffindor doing in here? And why aren't you wearing any pants?"

Stiles glanced uninterestedly over his shoulder at his fellow Slytherin. "We're watching a movie, obviously."

"Pants? And…" he glanced at the still very shirtless Derek readily ignoring him, a blanket thrown over the laps of the couch's occupants, "Shirt?"

"Optional." Stiles readjusted, sitting crisscross between Derek and Erica, who had long since discarded her uniform in favor of sweatpants and baggy t-shirt. "You're welcome to join, just shut up." Stiles motioned towards the other groups of Slytherins watching 'Easy A'. All of the participants let out snickers of laughter, and Stiles fell sideways into Derek laughing. He stayed there, snuggling into his side.

"Seriously, could you two get any gayer?" Jackson snarled, rolling his eyes hard.

Stiles shrugged. "I could be giving him a blowjob or riding him like a rollercoaster at Disneyland, but I'm not," he pointed out.

"You know what, just shut up. Why are all these people actually putting up with your muggle shit?"

"Because it's rad as hell and homework sucks major monkey testicles," Stiles said monotonously, "Would you sit the fuck down or go get Lydia or something?"

Pretending to strangle Stiles from behind for a few short moments, Jackson turned away in a huff to find Lydia. Maybe she could talk some sense into him. Scott squeezed by him into the Slytherin common room as he left.

As he marched towards his best friend, Scott shouted at the top of his lungs, "I HEARD YOU WERE WATCHING MOVIES WIHTOUT ME, STILES!" He flung himself over the back of the couch, landing between Stiles and an Erica who looked on the verge of a heart attack.

"Yep," Stiles said shortly, not taking his eyes off the screen as Scott reached for the bowl in his lap.

"I hope you don't mind that I told the others."

"Who does 'the others' entail?"

"Lydia, Danny, Isaac, Boyd, Professor Laura, Cora, Malia, and the twins."

Stiles pursed his lips. "So, in short, you mean the entire student body."

"Yeah, basically."

"Great, the more the merrier. This room isn't nearly full enough for a movie night."

"Exactly what I was thinking." Scott snaked his hand into the popcorn bowl he now possessed, slapping away Stiles' hand.

Derek blinked at the pair. "Did you just say you told my sisters?" Wide-eyed, mouth stuffed full of popcorn, Scott nodded at him. He groaned loudly. Before he could say another word, they were descending on him.

"You thought you could watch movies and cuddle Stiles without us?" Laura said as she squeezed between Stiles and Scott and Cora landed in Stiles' lap, making him wheeze in pain, "That's not fair."

"Tell me you didn't bring anyone else," Derek growled.

Laura grinned mischievously. "Oh, not many, just, you know, the other three houses, and maybe my colleagues." As the words tumbled from her mouth, students sporting pajamas and hefting blankets spilled into the room, filling the space with chatter and laughter. They mingled amongst each other, filling every available space that the movie could be seen from. Even the teachers banded together and lined up against a wall.

Derek groaned even as Stiles grinned. "Dude, this is awesome. I can tell that this is totally going to become a thing. Every Friday night from now on." He lowered his voice, glancing conspiratorially between his couch of friends. "Next time, I'll be sure to make a run to Hogsmeade from the essentials."

"The essentials?" Derek's skeptical eyebrow made an appearance.

"Yeah, Honeydukes, butterbeer, firewhiskey…" he said, ticking them off on his fingers, "Oh and this new wolfsbane vodka my friend gave me! That stuff totally makes your tongue go numb, sucks for trying to make out with someone, but those with magical creature blood can totally get wasted for once," he explained around his tongue where he'd stuck it out for demonstration.

Derek and Cora rolled their eyes in unison while the rest simple laughed.

…..

Headmaster Deaton was making his way back to his office when the lack of students filling the halls finally dawned on him. It was still two hours before all students had to be in their House common rooms. Normally, students would still be roaming the halls, causing mischief and pissing each other off.

His eyes narrowed. "Where's Stiles?" he wondered idly. He hadn't seen hide nor hair of the boy all day, which was highly unusual.

Half way to the Slytherin common room, he heard the raucous laughter. Frowning deeply, he entered to find his entire school, students and all, crammed into the large room. Students filled every available sitting space from the floors to the couches, claiming even each other's laps. The teachers leaned against the walls, snickering into their collars. At the very front of the pack, Stiles bounced between Scott and Derek, chattering in their ears.

"Ah, now I understand." Going to stand beside Madame McCall as the students called her, the head nurse, he asked, "How's the movie?"

Melissa startled, grasping the front of her robes. "Headmaster, you scared me," she gasped. Once her breathing had evened out, she said, "It's going well. I've never seen the houses get along for this long. Stiles is a wonder."

"We've known that for some time now," Deaton nodded.