Returning to school was like waking up from a pleasant dream. Everything felt awkward to Marco, who'd spent the morning classes in a daze, barely aware of what was going on.
Instead he was focused on the collar he'd kept in his pocket.
He knew wearing it in school was a bad idea, he'd even called Brittney to make sure it was okay to take it off. She'd called him an idiot for bothering her, which still brought a smile to his face to remember.
Still, he couldn't give it up, his neck felt naked without it, so he'd kept it close by. Whenever he felt anxious, all he needed to do was slip his hand into his pocket and remind himself of everything.
By the time lunch came around, Marco was getting anxious. Brittney hadn't texted him. He knew he had to be careful, he didn't want to upset her. But still, he really did want to see her again.
To the extent that without even realising it, he'd detoured from heading to the cafeteria, to ending up in front of Brittney's locker.
"Like a little lost puppy," he heard her calling from behind him. He turned around and stared at Brittney, his eyes drifting down her slim, toned body; down to her legs. It took a moment to recover, glancing back up at her face, which was contorted into a frown: brow furrowed, her lips pressed thin together.
Marco took a step backwards reflexively, he really hoped she wasn't angry with him. Although it did start to stir other feelings within him. Brittney being upset had caused everything to start after all, and she could get awfully creative when angry. Still, he didn't want her to be too angry. "I'm sorry!"
Brittney sighed as she opened her locker. "Don't worry, this" she pointed at her face, "has nothing to do with you. Sabrina's been bugging me all morning. "Oh, can I lend you my homework," "Oh Brittney, have you seen my gym clothes?"" She turned and smirked at Marco, "I could have told her I'd seen them, but I didn't think you were ready to give them up."
Marco's blushed as he looked around to make sure no one had heard her. Fortunately, everyone else seemed too busy heading for lunch to be listening in. When he turned back, she was watching him expectantly.
Reluctantly, he nodded. "Not yet." They did feel really nice to wear, and although he hated that it was causing Sabrina trouble, he still couldn't imagine not having the cheerleader outfit waiting for him.
"Good boy," Brittney stopped putting her books in the locker as she looked him up and down. "Hmm, I've got an idea, something that'll make everyone happy."
Marco doubted it would, but he was going to do it anyway. Brittney dismissed him with a wave as she busied herself in her locker. "Meet me in the changing rooms during sixth period. Until then, I've got things to do."

Marco's heart pounded as he crept past classrooms, making his way to the changing rooms. He'd thankfully not had to worry about teachers spotting him so far, and the doors were in sight. Brittney standing by them, arms folded and tapping her foot impatiently.
As he approached, she swung open the door, letting him slip in as smoothly as possible.
Inside, Marco had to do a double take, the room was an absolute mess, clothes shoved into bags everywhere, towels piled high on the benches, lockers left half open. "What the hell happened here?"
Brittney rolled her eyes, "Nothing you idiot. You've just never seen it when it's being used. Sabrina's class is using the pool at the moment, so don't worry, we've got it all to ourselves."
She led Marco over to her locker, opened it, and pulled out a gym bag. Marco's anticipation fell flat when she unzipped it to show it was empty.
"Now, strip off."
Marco froze up, "What?"
She just laughed, "Strip off. Don't worry about being seen. You've been naked here before."
That was when it was completely empty though, Marco thought to himself. Still, he obeyed. After all, he was already getting excited from the danger.
He quickly stripped naked, handing his clothes to Brittney to put into her bag. As she put his pants in, she smiled, pulling out the collar. "Oh, even better. Put this on," she handed it back.
This was a command he was all too happy to obey, slipping it around him and turning around so she could buckle it up properly. This took her a moment, and when Marco turned back he saw why. She held out another pair of panties. "More of Sabrina's, since you seemed so fond of the other pair... but be sure to treat them well, you're not keeping them."
Marco took the panties and stepped into them, pulling them up against they were covering his cock, which tented them at the front as his erection showed itself. "What now?" He asked, this couldn't be it, surely?
Brittney didn't disappoint him, leading him over to the bench and forcing him down between two sets of girl's clothes. "Now, you get a bit more fun. Sorry, I'd use my feet, but I don't think we've got time."
"Time?" The word got twisted into a yelp as Brittney started rubbing his crotch with her hands, stroking his cock beneath the panties.
Brittney barely wasted any time, getting a decent grip on his dick, starting to jerk him off using the cotton fabric of the underwear to heighten the sensation. Marco could barely hold on as she coaxed out an orgasm, his voice cracking with the pleasure as his cum trickled out.
Marco sat there for a moment, until the realisation hit him, "Oh fuck, these are Sabrina's panties!"
Brittney laughed, "Exactly, now stand up again."
At the moment, Marco didn't feel like that was possible, but Brittney pulled on his arm, yanking him upright.
Then she started to remove the panties, sliding them down his legs until he was able to step out of them. She left him standing there as she folded them up, and put them back where she'd found them.
When she came back, she glanced him up and down, as if noticing the cum still sticking to his cock for the first time "Now, seeing as how you've been very good, I suppose I can help clean you up this time."
Words failed him as Brittney knelt down and engulfed his cock with her mouth. He instinctively started resting his hands on her hair as she started sucking him clean, even as he started getting hard again. He winced, still sensitive as her tongue slid along his dick, until at last she let him go, wiping her lips clean. "Urgh," she grimaced. "I hope you liked that, because I'm not about to do that again any time soon."
"Thanks," he said, maybe a second too fast. He quickly looked around for her bag and pointed at it. "Should I get dressed now?"
"Get dressed? We've barely started." She laughed, and led him to her locker. Marco looked inside, all that was inside was a can of soda, which Brittney pulled out and opened. She sipped a bit, nodded. "Helps take the taste away."
"So, if we've started..." He froze, he heard voices getting louder. Brittney had the decency to look panicked for a moment, before she shoved him in the locker, and slammed the door shut. A momentary fiddle with the lock and he was sealed in, his vision limited to the thin slats letting in light. He saw Brittney smiling behind them, and heard her whisper "Now you get to watch the show."

Marco held himself as still as he could, as he watched the changing room doors swing open and girls started walking in, grabbing towels as they started drying themselves off from the pool.
He had to watch as they walked past him, unknowingly. All those girls who knew him. If they even guessed he was in the locker, he'd never live it down.
"Oh god," he whispered, thankful for the noise of the crowd to cover up his outburst. Star was there, walking directly towards him. She knew he was there.
Of course she was in the same class as Sabrina, of course she'd be here, of course she could tell he was- "Hey Brittney!"
"Urgh, Star Butterfly." Marco felt relief washed over his body as Brittney responded. Star was just talking to her.
"I'm so sorry you couldn't take part in class today, I hope those cramps go away soon!" Star was right outside, Marco was careful not to move a muscle, just watching as she started stripping, continuing her one-sided conversation with Brittney.
"They will, don't worry. I've got your friend helping me." Marco's ears caught the mention of friend, but the rest of him was too busy watching as Star pulled the bathing suit off from around her legs, dropping the wet cloth to the floor. He tried to shut his eyes, but his body didn't seem to want to obey, forcing him to stare as she started drying herself off with a towel. And then grabbed her dress. The same dress he'd worn and stained over the weekend.
Just as Brittney said, seeing Star pulling it on over her head made him uncomfortably aware of just how much he'd defiled it. He couldn't see his dick, but he could feel it, fully erect and begging to be touched. Only the awareness that any movement could reveal him to the world kept him still.
"Marco's such a nice guy isn't he! Oh yeah, he mentioned you'd got a dog! I love dogs, can I see it sometime?" Marco clung to the walls, trying to will Brittney to say no.
"He's a little shy at the moment. And I kind of want to keep him to myself for a while." Marco could see Star's face fall, even as he tried to pick out the parts of her dress where any stains would be. "But maybe if he's really good, I'll let you say hi."
"Yesyesyes!" Star bounced up and down. "I can't wait to tell Marco!"
Star ran off, leaving her bathing suit and towel in a pile on the floor. Brittney hissed into the locker. "Would you like that, Diaz? On display to your best friend, her seeing just how much of a pervert you are?"
He gulped. No, he was sure he didn't. No matter how aroused Brittney's words had made him, no matter how much he wanted to imagine it while he jerked off his cock. He couldn't.
"Well don't worry, either way. Here comes the big show." Marco peered through the slats. There was Sabrina coming in. Looking a little worse for wear, despite it only having been swimming. She looked around the room cautiously, seeming wary of those few that hadn't yet finished changing. She brightened when she looked up at Brittney and waved.
"Hey! I thought you weren't feeling well?" She called, grabbing her towel and starting to dry herself off.
"Well, I had to keep an eye on you. You are an important member of the cheerleading team after all." Marco tried to avert his eyes as Sabrina started to strip. He'd already shamed her enough by stealing her outfit. Staring at her naked just seemed too far.
"Well, unless I can grab a replacement or find my one, I'm not much help there." She sighed, bringing Marco's attention unfortunately back to her, his eyes following every inch of her body, up and down. He could see her reputation for clumsiness was well deserved, a few bruises marring her pale chest, and even what looked like tiny round burn marks were visible when she turned her back to her accidental voyeur. She really needed to be careful when cooking "You sure you don't know where it could have got to?"
"None at all," Brittney said, a hint of her resentment coming through. "I'm not the locker room monitor."
"Right, right." Sabrina went off to grab her clothes. Pulling on her shirt first to hide her modest chest.
And then grabbing her panties.
The panties Marco had just came all over.
He wanted to shout out a warning, to do something. But he couldn't he could only watch as the nervously laughing Sabrina stepped into her panties, and pulled them up. And saw her smile fall from her face as she realised something was wrong.
Marco's eyes couldn't look away from her, he watched as a trickle of his cum went crawling down her leg. A shiver passed up her body, just making the drip travel faster down her thigh. The panties themselves were obviously damp, his cum soaking into them. He could see Sabrina's eyes watering.
"Uh, Brittney, how long have you been here?" She asked, her lip beginning to quiver.
"Ugh, not long. I've been out getting a drink," she waved the can of soda.
"Oh..." Sabrina's face fell. It was obvious from her expression that she knew exactly what was between her legs, which she was keeping wide, unwilling to get any closer to the cum.
"Um, shouldn't you get ready for class? We don't have much time to change." Marco looked through the gap, trying to take in the room. It certainly did seem empty, everyone else having abandoned it.
Sabrina nodded, reluctantly grabbing her skirt and fastening it over the panties, mercifully blocking it from her sight. He kept watching as she bent over to put on her socks and shoes, and could hear her whimpering voice calling out something like "...daddy." He shivered with disgust at what he'd put her through, enough to make her call out to her father.
She limped awkwardly from the changing room, her voice breaking from the degradation.
When the door finally shut, Brittney turned to the locker and met his eyes. "I bet you just loved that."
Marco didn't.
"Seeing her, forced to wear those cum soaked panties."
He couldn't.
"Not knowing who did it, while you're there naked as hard as can be."
Marco tried not to think about it.
"Now, grab your cock, and cum." She laughed. "Do it, or I'm not going to unlock you."
Reluctantly, Marco reached down, his hand wrapping around his dick as he tried to think of anything else.
And yet, as he stroked, the only thing that came to mind was her expression. The way her smile crumpled as she realised what had happened.
He came, painting Brittney's locker with his cum as he imagined just how terrible she felt at that moment, his legs quivering as he tried to hold himself steady.
Brittney took her bag and placed it on the bench, then unlocked her locker. "I'll go make sure no one peeks while you get dressed. I know how shy you are." She laughed and headed for the door.
Marco finally mustered the courage to open the door, stepping out and trying heading for his clothes as fast as he could.
He didn't even bother cleaning himself up, letting the cum soak into his own underwear as he got dressed. After all, he wanted to feel what she did. He needed to.
Reluctantly, Marco took off the collar, and hid it in his pocket again. As he headed for the door, he kept seeing Sabrina in his head, but instead of her face it was his.
He pictured him standing there in Sabrina's clothes, his smile fading as Brittney broke him.