Seeing her face brought back a bunch of memories for Marco, most importantly the fact he'd kind of stolen her cheer-leading uniform, and still hadn't managed to put it back. It was lurking in his locker until he could find some way to sneak it into the locker room without it being obvious. At least he'd had a chance to wash off the cum stains.
He tried to hide his embarrassment at the thoughts by looking back down at his notebook, acting engrossed in the contents so she wouldn't see his reddening cheeks. "Hey Sabrina," he said, his voice breaking part way through out of anxiety. "What's up?"
"Brittney asked me to give you a message," she held out a little bit of paper. "Wanting your help with dog training? I didn't even know she had a dog?"
Marco looked up at the bit of paper, his blush spreading further across his face. "Uh, sure. She only just got one recently, so she asked me for some help?" He glanced around, half worried everyone already knew exactly what was going on. To his relief no one seemed to be paying attention. Even Star was busy talking to others. Relaxing, he took the paper out of Sabrina's grip, tugging it slightly when she didn't let go. Sabrina hovered around him, staring at the paper. "Thank you Sabrina?" He said, wondering what had her so annoyed. Finally, when it was obvious he wasn't going to read it with her around, she turned to leave, with a single glance back at him.
Opening the tightly folded paper, Marco tried to make heads or tails of Brittney's handwriting. She'd either not cared much about the note's contents, or she was overly excited about it. Marco found himself desperately hoping it was the latter.
"Meet me at lunch, bring the bag. I know you kept it." That seemed a pretty simple request? Marco looked at the clock. There wasn't much time until lunch, but now he knew something was waiting for him, every minute started to crawl by.
"Took you long enough," Brittney said, barely looking up from her phone, dressed in her own cheerleading outfit, sports bag held at her side.
Marco could only pant in response, having run as fast as he could to grab the sports bag, and then all the way to find Brittney. Fortunately she'd been waiting where he thought she'd be, the girl's locker room. Maybe he could finally put the bag back.
"Sorry," he wheezed, "I didn't think we were going to meet until the weekend."
Brittney rolled her eyes, and taking Marco by the shoulder, dragged him into the locker room. "I just said we'd be meeting then to give you your collar. Until then, I'm gonna make sure you've earned it."
"Earned it?" Marco disentangled himself from Brittney's grip. This didn't sound like they'd be putting the bag back after all.
"Yes, only good, obedient pets get their collar." Brittney smirked, "if you don't earn it, it's not worth anything."
Marco could see her point, as weird as it seemed. He'd never liked the way other kids at the dojo had paid their way to higher belts. Actually completing the challenges had made it seem real. And he'd come to accept that despite everything, he kind of did want to wear that collar. He just nodded, trying to seem ready for whatever Brittney had in store.
"The best kind of pet is the one you can show off to others," she walked around him, tracing a finger across his chin as he gulped nervously. "And so I want to do that too. Put on your cheerleading outfit, and join me for a walk around the school.
"Wait," Marco yelped, hands up in panic, "I don't want to be seen like that! I mean, I'm not exactl-" Brittney took a firm grip on his mouth, silencing him.
"As I said, you'll be going around with me. You honestly think anyone will pay you more than a second glance?" She angled his face down to get a good look at her body "Just think of me as camouflage."
She had a point. Marco was reluctant to take his eyes off her. After a moment to enjoy the view, he nodded. "Okay, I'll do it."
"Good boy," she said, and handed him her sports bag. "Also, after you're dressed up, I've got you a little gift."
Marco looked at it, tempted to open it now to see it, but held back. He really did want to earn the collar.
Putting it to one side, he started to strip, in his haste forgetting to ask Brittney to turn around, something he was alerted to when he started putting on the skirt. "No! You've already shown me just how comfortable you are in the panties. You should wear the whole thing!" She grabbed Sabrina's bag and rummaged around until she found them. "Put these on, otherwise someone might see your regular underwear."
Marco paused, the idea of putting on the panties was intoxicating, but he knew the effect they'd had on him before. He didn't want to be walking around school with his dick hard.
But on the other hand, she had a point. No cheerleader would be wearing tighty whities like him, and with the skirt as short as it was, there was a chance he could get spotted.
There was nothing for it, he pulled down his underwear, sticking it and the rest of his clothes into Sabrina's bag, and then stepped into the panties, cursing himself again as he found his cock stiffening under the tight fabric.
Before it could get too obvious he put on the skirt, hoping it would be enough. He then put on the bra and top, thanking Sabrina for her obvious insecurities which led him to have some kind of bust, something to fool people at least.
Finally he was dressed, he took Brittney's bag and unzipped it.
"Huh."
It was a dog toy. Black, rubbery, oddly shaped, but it had a bit he could easily see a dog holding on to, kind of like a dumbbell.
"Uh, Brittney, I know I'm supposed to be your pet, but isn't a dog toy kinda weird?" To his surprise and dismay, Brittney started to crack up.
"A dog toy?" She laughed, slapping him on the back, "Diaz you idiot. Haven't you ever heard of a butt plug?"
Well sure he'd heard them mentioned, but he'd never known what one looked like. After all, why would he? He looked at it, and the purpose of one end's tapered shape became obvious. "So, this is a gift?" Was she offering something to him? His dick started to strain against the panties at the idea, but Brittney's smile empty of any kind of warmth was already starting to put him off.
"Yes, a gift. While we go on our walk, you get to have that plugging you up. I'm sure you'll enjoy it!" Her smile twisted into a smirk as she looked down at his skirt knowingly.
"Wait? I'm not sure I'm ready for tha-" But Brittney grabbed his mouth again.
"You always say stuff like, "Oh Brittney I'm not sure." or "Brittney, I don't like it when you give me exactly what I want." You're such a whiner. And. I. Don't. Like. Whiners." She took the buttplug from Marco's hands. "Now, I've been perfectly kind in giving you a nice gift. And you're acting ungrateful! Does a bad little pet like you deserve a collar with how you've been acting?"
She released Marco just enough for him to admit "No..." He found her hand clamped over his mouth once more.
"So the only things I want to hear from you is "Yes Brittney," or... "Yes, Mistress." Understood?"
He nodded, and she released him again. "Yes... Mistress." He said, still a bit reluctant as she took out a bottle of lubricant from the bag.
"Now bend over."
Not wanting to anger her any more than he had, he obeyed, holding onto one of the benches as she pulled the panties across his cheek, exposing his butthole. A moment later he felt something cold pressing against it, only to push inside, gradually at first, easing into him. He tried to relax, trying to ignore the way the cold gel felt as it was slowly pushed in.
A second later he felt a second intrusion, and realised Brittney was applying the lube with her own fingers, probing his ass while spreading the lube inside him.
As he tried to relax, he felt a wave of embarrassment rise through him, mixing with the pleasure of the fingers in his ass. As they finally retreated, he muttered "sorry..." and realised he meant it. He felt ashamed, but not for being violated like that, but for some reason that he'd dare to make Brittney do it instead.
"There's a good pet, now relax Diaz." She gave him a quick slap on the ass with her dry hand which did nothing to help him relax. But still he tried, breathing in and out carefully as she started to push the buttplug into him.
Marco shut his eyes, trying to relax as much as possible. It seemed endless, forcing its way inside on and on, spreading him wider until... He felt his muscles relax slightly as it pushed its way fully in, the flared base resting against his butt.
"Well done," Brittney said, heading over to sink near the showers and washing her fingers. "You're doing really well, and we've got plenty of time."
Plenty of time. The words hit Marco like a cold shower as he remembered what he had to do. And now with the uncomfortable feeling of being full that he now had, thanks to the plug. He gingerly stood up, and tried to take a few steps, getting used to the way it felt inside him.
When Brittney came back, wiping her hands dry on a towel, Marco could do little but nod helplessly when she asked "Do you want to go for a walk?"
"Yes mistress," he agreed, as she beamed with pride.
Despite Marco's worst fears, it seemed Brittney was right.
As they walked through the crowded halls, Marco following right behind her, no one seemed to pay him any mind.
They certainly glanced often enough, taking note of Brittney and his passing, but no one seemed to spare more than a glance.
Relief washed through him as he started to relax. He was now no longer concerned that every piece of laughter was directed at him, or that at any moment someone was going to call out his name.
He crept up to walk alongside Brittney rather than following in her wake, and she grinned. "See, no one's going to look at you when they've got me to compare you with. After all, to them you're just a new girl, compared to a star."
It stung. Marco knew she was right, and yet it still hurt him. He was dressed up like a girl, with a plug filling his ass, embarrassing the hell out of himself, and yet he kind of felt like it wasn't real. That any moment he'd wake up in his bed, staining the sheets.
He knew it was wrong, that he should take comfort in his anonymity. Especially with the plug inside him. Every step he took making it seem to try and push further in. It made him unusually concious of each step, and he was sure he was walking funny.
And then they turned a corner, and his heart stopped.
Brittney had taken them to the cafeteria. While the halls had been crowded, this place was filled with... well, everyone!
He scanned the crowd in a panic, his body starting to clench, only sending the buttplug twitching, sending weird sensations through his body. Here he could see Janna and Star talking. A bit further on a bunch of the football players all seated together. Any wrong movement would completely expose him.
He looked around, desperately looking for Brittney for some form of cover.
But she'd walked straight over to the opposite side while he'd been panicking. She span in place, like she was on a catwalk, and smiled at him.
He needed to cross.
Alone.
He cursed that rebellious attention seeking impulse that had flared within him. Just as Brittney had implied before, he'd gotten exactly what he'd wanted. All he could do was accept it.
Taking a deep breath to centre himself, he placed one step in front of the other. Then another.
Slowly, step by step, he started to cross the hall. The buttplug in his ass causing each step to be far more animated than he'd intended, like his hips were shaking. He risked a glance around, and mercifully everyone seemed engrossed in their lunch, too much to notice him sashaying through the crowd.
Finally, after what seemed like an age, he reached Brittney, his knees feeling like they'd collapse at any minute.
Brittney took his arm, and slowly started leading him out of there, heading back towards the locker room.
When they reached it, Marco collapsed onto the bench. Tears welling in his eyes as he let loose apology after apology, "I'm so, so sorry mistress." He wasn't even sure why, was it just the flood of adrenaline he'd not felt for ages, not even from fighting monsters? Or was it something deeper?
Brittney sat down next to him, stroking his hair as he tried to relax. "You did amazing for your first try. No one would ever suspect you weren't a girl. Trust me, when you come to my place on the weekend, you'll have truly earned your collar."
He nodded, drying his tears on the cheerleading top. "Is it over?" He asked, unsure of which would be better, while keenly aware his dick was sure, straining even more against the panties. He looked at Brittney, hoping she'd offer him some relief like last time.
But to his regret, she nodded. "It's over, for now. You can get dressed again, and go pretend to be a normal person." She smirked, "Your secret is safe with me."
He nodded, and looked in his, well, Sabrina's bag. And stopped. "My, my underwear's missing."
He reached inside, pulling out his hoodie to check beneath it. "Someone swiped my underwear!"
Brittney laughed, "Well I guess fair's fair. You swiped Sabrina's, and someone's stolen yours. Maybe they'll be wearing it just like you?" She got up, clearly prepared to leave him behind. Her comfort and warmth dropped like an out of fashion coat.
"But, what should I wear?" He looked at her, desperately for an answer. He felt lost like this, and it was all too easy to let her take control.
"You've got underwear, just put your pants on top, that way you'll have a nice reminder of lunch, all through the day." She smiled, and blew a kiss as she stepped out.
Leaving him alone again.
Taking off the skirt and top, he started to exchange them for his own. Painfully concious he was going to need to keep the buttplug in for the rest of the day, along with wearing the panties.
He was also aware of just how hard that would keep him, until he could go home to take care of it.
He packed up the skirt and top in the bag, and got ready to leave. He was really hoping that his mistress was just giving him another test.