Big bro gets KO’d by little sis

Heather had a smug look on her face, watching closely as her little Billy gathered his breath. Up until now he’d been fighting scared. His innocent sister had unknowingly been fucking destroying him in the mental battle. Heather had thought he’d already lost it. Turned into a coward pussy by his sweet younger sister. Was he finally going to act like a man?

She lazily adjusted the fabric of her huge tits’ sports bra, paying close attention as Billy clenched his jaw and glared at his younger sister just a few steps away.

As Billy cautiously maintained distance, working to build up the nerve to rush in and strike, his little sister found the bravery first. She lunged forward, hurtling her gloved fist towards his face with perfect technique despite it being her first day of training. Billy’s eyes went wide and he gasped, moving to try and avoid the strike but moving just a bit too slow. His sister’s loaded glove glanced off of his cheek, as Heather smirked from the sidelines. Billy spun out of the way and backed up a few steps, breathing heavily and almost shaking with fear as he stared wide-eyed at his confident, smiling younger sister, pulling the outstretched glove back to protect her face. He had barely gotten out of the way in time. Another split second, and Anna would have knocked him out then and there.

Anna’s eyes glimmered with happy energy. She’s nearly hit big bro flush. She was actually having fun. She hadn’t expected that. Her tank top jiggled with the motion of her feminine curves.

Billy tried to catch his breath, staring her down. Even just that glancing shot had been powerful enough to wobble him slightly.

“Heehee.” Anna giggled. “Why do you look so dizzy?”

No. NO. Anna did NOT get to say that to him! His eyes flicked over to their mom of the couch. She looked like she was trying not to laugh.

In a roar of rage, Billy threw caution to the wind and rushed her, trying to finish this quick.

“Go easy on her Billy.” Heather called out from the side.

Billy had no intention of listening. Unfortunately, Anna was a quick learner, and as he swung wildly for her head, her earlier training kicked in. Moving on instinct, she weaves out of the way of the first wild swing, then the second, looking for an opportunity to counter. It was after bobbing beneath the third that she found it.

BAM!

Stepping up and into her punch, Anna crunched her glove into the underside of her big bro’s chin with all of her strength, knocking him the fuck out instantly.

“DUHH!!” Billy span a full 360, then faceplanted on the carpet at his sister’s feet. Anna jumped back, smiling, with her fist still up as she jumped from toe to to, waiting for her big brother to get back up.

“Woah, Anna! Hah, go easy on HIM!” Heather gasped and sat forward on the couch, huge tits swaying from the sudden motion. Holy shit… she hadn’t expected this. What a punch! She couldn’t fucking believe it - Billy was losing to Anna. Or… she bit her lip and waited. Or had he lost?

There was a pause of silence, as both women waited for the motionless Billy to make any sort of move to get up. After a few seconds, a happy Anna turned to her mom.

“Am I doing good?” she asked.

“Brilliant, honey. I’d say you’re beating him right now.” Heather responded, not taking her eyes off Billy as she leaned forward on the couch totally still, her breasts slowly swaying to a gradual halt.

Anna was looking triumphant, bouncing from foot to foot in the boxing stance he just taught her. Billy was just laying there, facedown at her feet, limbs out limp like a starfish. He looked pretty fucking defeated. After a few more seconds, Heather spoke up, breathily, to make sure of what she was seeing.

“Is he out? Billy, come on, get back up. You- You did NOT just get knocked out by your younger sister.”

Silence.

“Oh my god, you’re seriously not getting up!” Heather exclaimed, getting excited. “Did you REALLY just get knocked the fuck out by your little sister? Can her petite fists put you to sleep?”

Bouncing up off the couch like an excited kid, Billy’s full-figured mom rushed to kneel at his side to excitedly examine him, huge breasts heaving with rapid breaths

“Hello, Earth to Billy? Anybody home?” Heather rolled her son onto his back. His arms and head rolled limply along with the rest of him, face in a deep, peaceful sleep. Pacified. Like he’d forgotten all the rage in him right before losing the boxing match.

“Hah! Anna, I think he’s down for the count! You just knocked Billy the boxing champ out!”

As if just reminded that such a thing was possible, Anna’s face lit up with a happy glow. “I… beat him up? Big bro went night-night?” she asked.

“Fast asleep!”

Mom had a wide grin on her face as she leered over her sleeping son. She reached forward and pinched his cheek.

“Out cold, out cold~ oh, what to do~” Heather sang. “Geez, Anna, you put him down so HARD…”

“So do I win round one? I’m in the lead?” Anna asked, a bit confused.

“You win the whole FIGHT, girl. He’s done. You just totally beat your big brother.”

“Wait, I win the whole thing? Did he really lose to me so fast?” Anna was getting visibly excited, a red flush over her body. Deep in her bosom, her heart picked up speed as she began talking faster. “…And how come he’s asleep? Did I… just hit him in the head harder than he could take it?”

Anna licked her dry lips, staring at her KO’d brother, and her kneeling mother teasing his prone form and pinching his cheek. The backs of Heather’s matronly thighs were pressed against her smooth calves as she knelt beside her poor little boy. Her bra-filling heavy bosom was stuck out prominently.

Anna just wanted to hear Heather say the answer she already knew out loud, as she waited for the answer to her question. She was discovering just how enjoyable Billy’s hobbies could be.

“By a mile, sweetheart.” Heather replied, simply.

“Ohhh…” Anna let out an unsteady moan. “He lost the fight…” she gulped “And I won…”

Anna pressed a firm loaded glove to the crotch of her boxing shorts.

“H-How long will he be knocked out for?” She bit her lip. “Will it be the whole weekend now?”

“Ha! That would really be something, wouldn’t it? I guess we’ll see… that was a pretty crushing defeat.”

Heather smirked, slowly waving a hand back and forth over his dazed sleeping face, just in front of his eyes as if trying to bring him back to consciousness.

“My eldest son just got knocked out hard by my daughter, right in front of me… out cold on the floor… for shame…” she grinned.

Heather reached out with a finger to burble Billy’s unresisting lips. Anna could see her mother was clearly enjoying this, and she had… something of her own she needed to deal with, so she excused herself and left Billy in the tender care of their mother. Without another word, Anna hurriedly headed up the stairs to her room, to frantically masturbate in peace. Heather’s lovely fun with Billy’s sleeping body was audible all the way up.

“Mwah. Let mommy kiss it better, Billy. Mwah. Mwah.” Heather smiled, planting gentle, tender kisses on Billy’s chin, kneeling on all fours over his laid-flat body. Limp. Defeated in an instant. Her firm booty almost wagged with happiness as she laid kiss after kiss upon him, her motherly tits dangling and swaying slightly in the sports bra they’d been packed so tightly into. She was enjoying this moment immensely.

Mommy took care to pull her head back and look down at her son with a smile after each gentle smooch, though she kept her face close enough to feel his weak, steady breath on it. It was so exciting being this close. Seeing him like this. She used each pause as a moment to compose herself somewhat before planting the next delicate kiss. If the kisses were too sudden or hard they might have knocked him out even more, after all.

Ah… the thrills were coming back full **** now, and Heather had no intention of letting them go by treating her Billy any differently than as a toy. She was going to have the best orgasm of her fucking life that night, replaying this KO of her eldest son to her own book-loving daughter in her head over and over again. That spin the punch had made him do, oh god, the spin…

“Mwah. Mwah.”

Heather gave a few more kisses to sweet Billy’s glass jaw, his loser’s chin. Finally, she moved her smirking ruby lips further up to deliver one final, slow, loving kiss to his forehead, to help his brain on the road to recovery.

“…Mwah!”

An overjoyed Heather gave her son’s nose a quick eskimo kiss, then pulled back to stare at his KO’d face with a warm smile. Her special boy. Her darling son. She loved him like this.

Smiling down on him, Heather shifted slightly to glance over her shoulder at his feet, and tutted.

“Oh, honey… Anna made your toes curl? That’s just sad…”

Heather couldn’t help but laugh, her full breasts shifting with joy. Holy shit. Billy lost. Billy got knocked out. Fucking Anna had knocked him out. He was done. He was the worst boxer in the house now. And she couldn’t wait to see what that meant for the family. This was going to be so. Much. Fun.