"FUCK! YES! Cum in me!"

Sienna gripped the sheets of the bed tightly in her fists, her tits and cheek were pressed into the mattress, and her boyfriend was thrusting powerfully into her from behind.

He gripped her hips and pulled her back with each thrust. His thick cock pumped into her drenched pussy. She was so wet that his cock was absolutely coated in her sweet nectar.

The continuous encouragement from his slutty nineteen-year-old girlfriend set Cole off, causing him to blast several thick globs of semen directly into her cunt and fill her up just as she wanted.

Cole held himself deep inside her, while cum seemed to endlessly spew from his cock. Sienna panted loudly and rubbed her clit through another body-rocking orgasm, shaking her firm, round ass side to side as she enjoyed the feeling of her boyfriend's sperm dripping out of her.

Sienna loved that feeling. It was beyond just a fetish at this point. She was completely desperate for it, desperate to feel a thick cock throbbing within her womb as it was flooded with sperm. It was a feeling that had gotten her into several sketchy situations in the past, and had earned her quite a reputation.

She didn't care. Each of those situations resulted in huge orgasms and a nice creampie, or two. Sometimes the creampies came from different cocks, one right after the other. As such, she was known for being the sluttiest cheerleader at the school.

Then she started dating Cole. Both of them were in college and living in the dorm, so there were always sex opportunities.

Cole fucked her good, exactly how Sienna wanted, and as often as she wanted it. There was no reason for her cheat, as she often did with previous boyfriends. It usually took less than a couple of weeks before she found herself fucking another guy. However, she had spent most of the summer fucking Cole's brains out and had no interest in looking for more cock.

Until Cole fucked that up...

The football team and cheerleaders were headed off to their annual summer training camp just before school started. They would spend five days in the blistering heat, practicing all day, and hopefully fucking every night.

Sienna and Cole weren't able to ride on the same bus. Players, coaches, and support staff were in two of the buses, while cheerleaders and their support were on the third. It was only a few hours drive though, and Sienna would find time to sneak away with Cole later.

Sienna was sitting in the back of the bus chatting with her best friend, Jenny. They were laughing and flirting with the five guys on their bus from the support staff, ones that helped with gear, setup, and other tasks for both the team and the squad.

While this year's team and squad were a bit older, made up of mostly juniors and seniors, the support staff was almost always freshmen. Tyler and Ron were the newest members, and youngest, at just eighteen.

Sienna giggled cutely at the guys' jokes and played with her blonde hair, pulling it cutely across her lips as she smiled at them. She couldn't help flirting, she loved it. She enjoyed the attention and liked to tease. Besides, flirting wasn't cheating!

So, when one of the guys tickled her, she giggled and only half pulled away. When another joked about her being more comfortable sitting in his lap, she called his bluff and scooted right on, making sure her cleavage was properly displayed right in front of his face.

Maybe it was the warm summer sun shining on her cheeks, or the cool breeze flowing through a few open windows, but Sienna was feeling very relaxed and content. She was having fun, and all the flirting was starting to turn her on. She looked around at all the boys, they were all cute. Some of them had even hooked up with one or two of the other girls in the past.

Sienna moved back to her seat next to Jenny to relax for a bit. She really hoped Cole would find someplace to drag her off to that night. She needed to get fucked, badly.

An hour into the drive, she received a text from a friend on the support team, Tara. She was riding on another bus.

"You're gonna be pissed."

"What's up?" she replied.

"The boys are getting a bit rowdy over here. I'm on Cole's bus and one of the other girls started giving Paul a blowjob."

Paul was Cole's best friend. Sienna wasn't surprised or even upset. She had even had some fun of her own on the bus in the past.

"He's sitting next to Cole, and Cole asked her if she wanted another one."

Now Sienna was starting to see the whole picture.

'He fucking better not,' Sienna thought to herself and waited for the next text.

"She's sucking them both off."

Tara was right, Sienna was pissed!

"Get me a picture," was her only reply.

After several minutes, Tara was able to sneak one. The focus in the picture wasn't the best, and it was kind of dark, but you could easily recognize Cole and Paul. A girl was knelt down between them, with her head in Cole's lap and her hand wrapped around Paul's cock.

'WHAT THE FUCK!' Sienna screamed in her head as she looked up toward the roof in frustration. Her eyes teared up and she was shaking a bit. She was hurt of course, but she was determined not to let it get to her. This wasn't the first time she had been cheated on. Still, she was giving Cole pussy, or at least a blowjob, nearly every day. They fucked a lot!

"You're a fucking dick! Really? Deep throating you and letting you cum on my tits last night wasn't fucking good enough?" she texted Cole.

He replied almost immediately, "What the hell are you talking about?"

Sienna didn't text back, instead, she sent the picture.

Cole didn't reply right away, but when he did, he was an even bigger jerk about it.

"What? It's just a blowjob. I didn't fuck her."

Sienna wasn't just pissed now, she was enraged. Jenny had seen the texts and held Sienna's hand to calm her down. Sienna just sat there, lost in thought. She stopped caring about why he did it and instead turned her focus to how she would get back at him.

Nobody else on the bus, besides Jenny, knew what was happening. They had all carried on with their joking and flirting. Then Tyler called out to Sienna, "Hey, wanna come back and sit with me again?"

She wanted to snap at him to 'fuck off,' but had another thought instead.

Her eyes popped wide and she knew exactly how she would get back at Cole. She turned, smiling seductively at Tyler. She held her finger up, signaling for him to hold on a second, then turned and handed her cell phone to Jenny.

Jenny and Sienna had been friends for a long time, and Jenny could see the look in Sienna's eyes. The slutty girl she knew and loved was back.

"Take some good pictures for me," Sienna said, then turned and stepped across the aisle to the bench seat Tyler and Ron shared.

She stepped across Ron, making sure to 'accidentally' rub her tits across his face. Then instead of sitting on Tyler's lap, Sienna straddled him, pressing her pussy down against his hardening cock.

She laid her arms leisurely over his shoulders and giggled cutely as she slowly rubbed herself against him.

"You're right, Ty, this is a better seat."

"I... um, yeah..." Tyler was at a loss for words. Ron just stared wide-eyed at them. The other three guys and others that were close by hadn't noticed anything yet.

Sienna was slowly grinding against Tyler's growing erection. Soon he was as hard as ever but was frozen in place, unsure of what to do. He stared at the gorgeous cheerleader in his lap, her thin cotton shorts were very short and did nothing to hide her firm bubble butt or obstruct the feeling of her pussy against him.

The neckline of the team shirt she wore was cut low, giving both boys an amazing view of Sienna's perky tits being squeezed into the most amazing cleavage, just inches from their eyes.

"Well... it was comfy, except this thing that keeps poking me," Sienna teased.

Tyler turned a bit red, but his embarrassment was replaced with arousal when Sienna shifted back and pulled his sweats and boxers down to expose his cock.

She took it in her hand and began slowly stroking it. While guiding the head against the outline of her pussy, she leaned in and whispered, "It's okay, I'll take care of it."

She laid her head on his shoulder, turning to face Ron, but also allowing her to see Jenny. Ron looked on in surprise, he couldn't take his eyes off of what was happening. Meanwhile, Sienna watched Jenny slyly snap a few photos of her jerking off Tyler.

Pre-cum quickly formed at the tip of Tyler's cock and dribbled down onto her hand. He finally gained some confidence and ran his hands over her ass through her cotton shorts. Sienna just smiled and spread the pre-cum around his shaft with her fingertips.

Tyler muffled a groan when she began to jerk him off faster. His eyes widened when Sienna spit into his lap, hitting her target perfectly, and using her saliva as lube to masturbate him.

"Feel good?" Sienna asked. Tyler just nodded his head, 'yes.'

She turned to Ron, flipping her hair back over her shoulder and looking him in the eye, "Enjoying the show?"

Ron looked away slightly, unsure of what to say, but Sienna brought his attention back to her.

"Ron," she called to him quietly, "take your cock out."

He looked back to her but hesitated for a moment. Looking back and forth between his friend and the slutty cheerleader in his friend's lap. When Ron didn't move, Sienna reached over with her free hand and tugged at his shorts.

Ron complied and unfastened the button. He pulled his zipper down and pulled his cock out through the flap of his boxers.

Sienna's eyes lit up at the sight. Ron was absolutely oozing pre-cum, it looked like he would burst at any moment. That made Sienna happy. She took his cock in her hand, it was already as slick as could be, and now she was stroking both cocks.

Sienna jerked off Tyler and Ron for a few minutes, alternating between stroking them fast and slow, keeping them on the edge, but not letting them cum. Finally, she knew she wouldn't be able to drag it out any longer, and that both guys were close to orgasm.

Remembering her surroundings, Sienna took a quick look around. At least four pairs of eyes were focussed on her, all accompanied by big smiles.

Adam and Zane were in the seat behind them. They were the quieter two of this group but over the past school year had been fun to tease.

Sitting across from Adam and Zane were Erica and Sean. They had been together since high school. Erica loved to share stories about her sex life with the girls, and Sienna knew that the couple was pretty adventurous.

All three guys, and Erica, were watching them. The guys were rubbing their hard-ons restrained within their pants. Well, Erica was rubbing Sean's.

Sienna looked to the three other guys, "Waiting for an invitation? Take your dicks out."

Adam and Zane's eyes lit up. Sean looked over to his beautiful brunette girlfriend, who nodded with a smile.

As the others started to remove their bottoms, Sienna turned back to Ty and Ron. "Getting close?" she asked them.

They nodded quickly up and down. Both of their cocks were covered in pre-cum and saliva, they were thick and throbbing, ready to blow.

Sienna let go of both boys and started pulling at the strings of her shorts.

"Well, we can't get the bus all messy, can we?"

She lifted her leg off of Tyler for a moment to get her shorts off, leaving her in just lacy, gray boyshort panties.

Sienna settled back into place on Tyler's lap, but moved in closer. She pulled her panties to the side with one hand, and guided his cock to her pussy with the other.

"Mmph!" Tyler groaned, his lips shut tight as Sienna lowered herself down onto his cock. Then she turned to Ron again.

"Don't worry, I have a place for yours as well."

Sienna leaned into Tyler's ear and whispered, "Fill my pussy up while I make Ron cum in my mouth." Then she leaned down and engulfed Ron's seven-inch cock in her throat.

Now that she didn't have to be sneaky, Jenny moved closer to get better pictures. She could also see the others in the two back rows. Jenny could see Adam and Zane both stroking their rather impressive dicks while they peeked over the seat to watch Sienna. Erica was jerking off Sean, he was average length but kind of thick.

Tyler and Ron had been hanging on the edge for a while, and didn't last more than a minute or two once they were inside of Sienna.

Sienna bobbed her head up and down quickly in Ron's lap. Spit was dribbling from the corners of her mouth as she sucked him off. Tyler gripped Sienna's ass with both hands and thrust his cock into her from below, pushing deep into her soaked, shaved pussy.

"Oh, fuuu..." Tyler moaned while releasing his orgasm into Sienna's cunt. The second she felt his thick cream coating the walls of her pussy, she began to orgasm. Her breathing deepened but was cut off as Ron grabbed her head and held it down, pumping his load straight into her stomach.

Both boys bucked their hips up hard as they came, filling Sienna from both ends. Her orgasm ended about the time theirs did, and she sat up to catch her breath.

Looking around, Sienna smiled as she seen what was going on behind them. Two fresh cocks were being jerked by their owners, Adam and Zane. Erica was licking and sucking the head of Sean's cock while he jerked to the sight of Sienna and the boys.

Sienna stood up and pulled her panties back into place to keep Ty's cum from leaking out, then she squeezed her way toward the aisle.

Jenny stood up in the aisle for a moment, anticipating her friend's next move, and blocked the view from the front as Sienna moved back one row in just her panties and shirt.

"Spread your legs apart," Sienna instructed Adam as she turned around and pointed her ass back at him. He had a deer-in-the-headlights look as he did so, and watched Sienna pull her panties aside again, enough to expose her soaked, cum-filled pussy and her firm ass as she sat back onto his lap.

Adam took hold of her hips and helped guide her into place. Sienna grabbed his throbbing cock and aimed it toward her wet folds, nudging his dick against her pussy, and easily sunk down onto his throbbing erection.

"Emm, nice," she turned back and said to Adam. Jenny reached in with the phone and took a couple of close-up pictures.

By this time, everyone involved was ready to blow. Nobody was going to be able to last much longer. Sienna didn't mind, that's what she wanted.

Adam reached up and slid his hands under her shirt, finding her perky tits and squeezing them tightly.

He gripped her tits hard and pumped his cock into her a few more times. Then Sienna felt him twitch as he unloaded in her.

"Ohhh..." Adam moaned as he added a second creampie to his friend's cunt.

Sienna continued to grind on him, another orgasm welling up within her. She looked over to Zane, who was pumping furiously on his cock. His teeth were clenched and he was about to cum.

"Oh no you don't!" Sienna quickly slid off of Adam's lap, mid-orgasm, and onto Zane's cock.

Zane slipped easily into her slippery cunt, and Sienna instantly began riding him hard and fast, feeling her pussy convulse around his shaft in pleasure. While bouncing her ass up and down on Zane's lap, Sienna lifted her shirt and shoved her tits into his face.

He took the hint, grabbed Sienna's tits roughly, and sucked her nipple while she rode out her orgasm. Seconds later, he came as well, holding her down against his lap as he grunted his orgasm into her saturated pussy. Rope after thick rope evacuated his balls and filled her beyond full, as semen from three different boys leaked out of her.

Sienna stopped riding and sat still in Zane's lap, breathing hard and looking across the aisle toward the sound of muffled groans.

She smiled, and watched Erica swallow down every drop of cum that Sean shot into his girlfriend's throat. Sienna was happy to have inspired a new adventure for her friends.

Sienna stood and quickly pulled her panties in place, trapping the cum that was flowing out of her. Ron passed her shorts over the seat to her, and she redressed.

"Make sure to get the same seats for the ride home, boys!" Sienna laughed as she moved back to her seat.

"That was fucking hot!" Jenny said, handing Sienna her phone back.

They scrolled through the pictures. Jenny had taken a lot, and they were making Sienna horny again already!

She wanted to fuck again, but they were almost to camp, and she had business to attend to first.

Sienna chose five of her favorite pictures, cropping out faces just to be safe, then she sent them to Cole.

She would have given anything to see Cole's face when he seen the pictures, he called her almost immediately.

"ARE YOU FUCKING SERIOUS?! WHAT THE FUCK?!" Cole shouted.

"What?" Sienna asked in the most innocent voice she could. "It's only sex, I didn't fuck all of them... yet. But don't worry, there is still plenty of summer left for that!"