He sister makes him pay

Billy looked nervously at his mother and sister, but when his eyes fell on Anna he saw something that made him stop. She had changed. Gone was the nervous little girl he had grown up with. She looked like a confident woman who knew her own strength and was unafraid to demonstrate it. The fire in her eyes made his heart speed up and his dick tingle with desire. He could now see what Matt had been saying for years, because overnight his sister had turned into a conquering warrior woman before his eyes. And he wanted to see more...

"You're right Anna,"Billy croaked, his mouth going dry at the thought of what he was about to do. "What I did went way beyond a prank. You deserve to get some payback."

Heather looked surprised, but Anna just grinned victoriously. "Glad you see it my way. Go get your gloves, bitch. I'll at least give you a fighting chance."

While feeling had not expected this, he nodded obediently and quickly rushed upstairs. As he put on his boxing gloves, Billy thought about what he was walking into. Rather than just beat her brother up as punishment, Anna was actually giving him the chance to fight her. That meant Billy had the another chance to regain some of his status.

Both his mother and sister we're now convinced of their own abilities. If Billy were to win this fight, he would show that he was not the pushover they were convinced he had become. So if he had any more matches against the two of them and won like he should be capable of, he would again hold the respect that he once had, while still having several sexy memories to occupy his nights. Hell, he could even offer to spar with the girls more in the future and let them win, just to give him more wank material. They would still feel confident and sexy, but he would no longer have to worry about being looked down on. And Matt would be his witness, so things in the boxing club could go back to normal as well.

That said, it was clear Anna was not intimidated by the idea of fighting her brother anymore. Billy couldn't blame the girl for her confidence. She had now KO'd two far more experienced fighters. Obviously she was certain she could do it again, and with those loaded gloves it was a very real possibility. Even without them, Anna had proven she was a natural. After less than two hours of training, she had made herself a **** to be reckoned with. She had good instincts, was quick on her feet, and had impressive technique for someone who had less than a day's worth of experience. Even if she owed a lot of her victory to the gloves, she did not know that they were weaponized. And despite the fact that her brother and Matthew had gone easy on her, she was still a threat. Especially with her confidence at a level Billy had never seen before.

Even so, she had to be tired after fighting Matt. Billy had added just enough weight to make the punches the gloves delivered more effective so he wouldn't get caught, but using them could still wear your muscles out, especially someone like Anna who had so little athletic experience before now. Even if she really was a natural, his baby sister didn't have the strength or stamina he had developed over the years. If Billy played this smart, he could escape this nightmare and turn it into an even greater dream than he had originally imagined!

Billy slammed his gloves together determination. It was time to remind everyone why he was a champion. He made his way to the stairs, throwing practice punches as he walked. He imagined himself advancing on his little sister, her getting worried as she realized she was outclassed right before he put her to sleep this time. A confident grin made its way to his face and he confidently strutted his way down the steps. Billy made his way into the living room, fully expecting to restore his good name, only for his heart to leap out of his chest at what he saw.

Matthew was sitting on the couch with both Billy's mother and sister fawning over him. Heather was standing behind her guest, gently massaging his shoulders. The woman's enormous tits were very lightly touching the back of the young man's head. Not enough to imply anything indecent, but enough for him to very clearly feel that he had a wonderful pair of pillows he could fall back into at any time. Meanwhile, Anna was holding an ice pack to her new boyfriend's jaw that she had walloped earlier. She was bent at the hip, giving Matthew a mouthwatering look into her dangling cleavage while from the opposite direction Billy grew stiffer as he stared into his sister's jaw dropping rear.

"Wh-what are you guys doing..?" Billy gulped, hoping he didn't sound as envious of his best friend as he currently felt.

"Oh, Matt has been such a good sport about this whole mess, even when Anna put him to beddie-bye," Heather giggled, unwittingly leaning in closer to the boy and letting his head slip backward into the valley between her breasts for a few seconds. Matt's face turned red as a tomato before she pulled away and continued rubbing his shoulders. "We just wanted to show our gratitude and make him feel comfortable. Especially after how adorable it was when these two finally got together!"

"Mom!" Anna blushed in embarrassment, not having noticed how her new boyfriend had temporarily used her mother's boobs as a headrest. Instead she gave him a kiss on his uninjured cheek and a sultry smile. "Sorry about the bruise baby. I promise I'll make it up to you. Just as soon as I take care of some business..."

Anna stood up straight and turned to face her brother. Her hair whipped around her, framing her face perfectly as she looked at him over her shoulder with an icy glare. "It won't take long."

Matt gazed up at his gorgeous new girlfriend dreamily. "Don't you worry about me. Just remember what I told you about."

Anna raised her fists to her face with a cocky smile. "Will do coach..."

In the next second she was racing forward, and Billy felt all the confidence he'd had minutes before evaporate. Billy narrowly raised his guard before what would have been an instant knockout punch would have rocked his jaw. Anna did not relent and her punches were coming in far sharper and quicker than before. Billy was thrown off balance by her aggressive tactics and stepped back, and Anna grinned when she saw the opening she had been trying to make.

Anna delivered a quick left hook to Billy's gut. It wasn't nearly as powerful as the one she had used to bring down Matthew earlier, but that was the point. It was strong enough to bend him over and make his guard falter. Another quick right hook found her brother's cheek and his guard dropped even more, letting Anna deliver an uppercut to Billy's chin that made stars explode in front of his eyes.

"DERK!" Billy squawked as her fist found it's target. The former champion of the house was thrown backward, stumbling around on jelly legs until he backed into one of the chairs he had moved the night before. The boxing vet collapsed into the seat, his head spinning as images of his sexy sister danced around his vision.

Anna laughed at the vacant look in her brother's eyes. She rested a hand on her hip, enjoying the show. "Oh my gosh! Did I knock you stupid already? Wow Mattie, you weren't kidding! That combo really did the trick!"

Matt gaped at how fast the girl had incapacitated his rival. "Y-yeah... I mean I knew you'd have the advantage to get his abs easier because of your height. I can't aim there without leaving myself ****. You are more on the right level so if you take away his reach, I knew you could rip him apart. But seriously Anna! That took less than ten seconds!"

Anna inwardly cringed and fixed Matthew with a nervous look, worried she had just emasculated him more by beating someone so easily that he had never been able to defeat. "Is that bad..?"

When Matt turned back to her the look on his face was neither one of anger or disappointment, but a smile of mesmerized awe. "No way babe. It just proves you're even more awesome than I ever thought!"

Anna bit her lip with a lustful grin. The boy she liked wasn't bothered by her dominant side. He found it every bit as much of a turn on as she did! In that moment Anna felt the last of her shyness and uncertainty melt away. She was fully transformed from a timid and mild-mannered school girl to a full blown Superwoman!

Anna curled her arm slightly, feeling her muscles strain from the new ways they have been used in the past 24 hours. She had always thought she would hate that feeling. The most athletic the girl had ever been was the yoga class that her mother have convinced her to do together. Anna had always felt awkward and self-conscious there when people watched her there, never knowing it was because they envied the mother and daughter's natural beauty and flexibility. So Anna had left it after a month, however she also found it as a good way to relax during long study sessions and keep fit without wasting all of her time in the gym. But now Anna didn't just feel fit, she felt powerful! She did not want to give that feeling up. She wanted to feel it more. Right. Now..!

Anna marched over to Billy, who was still sprawled out on the chair in a daze. She smushed his face between her hands with a dominant grin. "I hope you didn't think it was over champ..."

"Nnnnno..." Billy groaned as he looked up at his sister with blurry, half-lidded eyes. "Ssssnot offher yet... Gudda... beat yeww..."

"Riiiight... Keep telling yourself that," Anna giggled, pulling her brother to his feet. The boy could barely stand as woozy as he was, and Anna practically dragged him over to the wall before leaning him against it with a smirk. "You know Billy, now that I'm taking up boxing I'm going to need a punching bag. Thanks for volunteering!"

And then Anna started to truly punish her brother. She fired punch after punch into his exposed stomach, taking great pleasure in each deflated wheeze she earned as her gloves sank into his belly. With his back to the wall, all Billy could do was fall forward, draping himself over his sister's shoulder and giving her an even easier target. His arms hung useless over her back, their only movement coming from the sway that followed each of Anna's blows.

Anna kept this up for over a minute, and just when everyone thought she was done the smaller girl stood her brother straight up against the wall and through one heavy right hook across his face, followed by a devastating left. She repeated this process again. And again. And again!

Matt watched with eyes wide as each punch sent a spray blood and saliva into the air. He could not believe that his undefeated best friend was being completely destroyed by his rookie little sister. Behind him, Heather was grateful that all eyes were off of her as she rubbed herself through the skin tight material of her yoga pants while she hungrily watched her smaller daughter beat her son bloody.

Finally, Anna placed her hand on her brother's chest, both to hold him in place and so that she could stop to catch her breath. The girl was exhausted. Her arms burned and she was absolutely dripping with sweat, but as she looked at the state of her brother she could not help but swell with pride. The once strong and invincible champion had been reduced to a beaten mess, and she had been the one to do it. Where once she would have been horrified and shocked by what she had done, now she just smiled at the power she had always had and been afraid to claim.

Anna leaned in close to her brother's ear. He was barely conscious, having been knocked out and punched awake repeatedly during his sister's onslaught. He felt her large, soaking wet chest press up against his own and shuddered when he felt her breath on his skin.

"I know I was mad before Billy, but I guess I should thank you," she whispered, her voice dripping with a sensuality that had never existed in her before today. "You brought this out of me. I never would have known what I was capable of if today hadn't gone the way it did. So to show my gratitude, I'm going to stop here before I really hurt you. But I want you to remember that I could have. I could have destroyed you... You tried to take on your nerdy little sis, and she mopped the floor with your face! You were right to be scared of me Billy. And you better get used to that feeling, because now I own you, little bitch...!"

With that, she gave his nose a tap, and let him go, watching in amusement as he slid down the wall with his legs sprawled out until his butt smacked into the floor. Anna giggled and turned on her heel and thanks to Billy's dazed vision, he was treated to not one, not two, but three gorgeous images of Anna's heavenly bum swaying as she marched away from him. That was the last image he saw before his face fell forward and he was again in Dreamland thanks to his sexy little sister.

Anna stopped next to Matt and put a hand on his chest. "Honey, would you take my punching bag upstairs? I need to go shower before you take me out for lunch..."

A quick kiss on the lips was the only other incentive Matt needed. He jumped from the couch and rushed to carry Billy upstairs. Anna grinned at her boyfriend's eagerness before going to clean herself up before her date.