Late Bloomer

Late Bloomer

By BdanmanBB

Johnny and Jenny were in a stand off in the middle of the living room, motivated by an old kung fu movie they had turned on. Despite their gender differences, the two had always had spirited and even physical competitions with one another. As a long-time gymnast, Jenny was always able to handle herself through her thick, muscular build. On the other hand, Johnny was a bit of a late bloomer and hadn't yet physically developed into a mature male, but that all changed as soon as he turned 18 and puberty finally hit delivering an intense blast of testosterone.

It felt like over the course of just a few months that Johnny had went from a boy to now a brawny young man. His cock and balls had developed into a formidable foe as well, thick and meaty, bulging at the seams of his shorts. Jenny had caught a glimpse of her brother coming out of the shower and still has vivid memory seeing his thick meat swinging around only outdone by a hefty set of balls swaying beneath. She couldn't believe how quickly her brother had transformed and now her ability to match him physically was suddenly being challenged.

His muscles and cock weren't the only thing that inflated though, as with his newfound strength and power, came something ever so fragile; the male ego. Johnny knew he was a man now and took every opportunity to flaunt it for his sister. Whether walking around shirtless all the time or coming to the breakfast table in nothing but his tight, white boxer briefs still half chubbed from his insatiable morning wood, he loved showing off his manhood in front of her, especially considering he knew his sister's insecurity about her small breasts, something he'd always teased her about. Jenny would always throw jabs back letting him know that despite the large "assets" hanging between his legs, she still had the advantage and that one day he'd find out.

Well... today was that day. So now back to the living room...

Johnny stood confidently in front of his much smaller sister, legs spread and knees bent, ready to attack while Jenny stood there smiling back at him with her hands on her hips, amused by his eagerness to battle; something they hadn't done since Johnny's physical transformation.

"I'll give you one last chance to back out of this, dude." she warned with a smirk on her face.

"I'm built like a man now, sis. I'm afraid the tables have turned." Johnny stated confidently grabbing at his package.

"I've got a little itch... maybe you could scratch it for me?" he smirked back glancing down at his package, his hefty nuts clearly defined through his flimsy shorts.

"Oh, I've got an itch as well... And I'm afraid mine is going to be very painful one to scratch..."

"Painful for you, of course..." she added.

"Just so you know, I'm really planning on crushing your spirit, sis."

"Oh, that's fine, because I'm totally going to crush your ego."

"And probably something else too in the process..." she giggled looking down at his fat package.

"Something else? What the hell are you talking about?" Johnny asked in confusion.

"I'm talking about..." Jenny began to say before suddenly her foot shot out and catapulted up between her brother's open legs with lightning speed, catching him completely off guard, exposed and vulnerable.

"Hiyaaaa!" she cried out as her foot made thunderous contact with his testicles, driving them up against his body with shattering force. She was out for blood and didn't hold back, ensuring she delivered her message with force.

And like a scene from a movie, Johnny's eyes went comically crossed and only a gasp escaped his mouth as unfathomable pain quickly set in, taking hold over every bodily function he had. His knees soon became weak, he was seeing stars, and couldn't help but slink to the ground as his body began to fail him at every turn.

"Those big balls of yours silly..." she giggled seeing the young man slink down to his knees, his eyes filled with pain and betrayal as he looked up at his sister, clutching his aching nuts.

"Ohhhhhhh...my ballssss..." he gasped, struggling to breathe as a wave of nausea struck deep within his stomach and he couldn't help but finally succumb to the need to lay down onto his side, feeling completely helpless and humiliated.

"It looks like the only thing getting crushed today are those big fat nuts of yours!" she joked looking down at her struggling sibling.

"God... it hurts so fucking bad." he moaned, now curled up into a ball.

"Sucks to be a dude, huh?" she cackled.

"Fuck... did you have to kick me so fucking hard?!"

"Oh, you'll be alright you big baby. A little ice and those puppies will be back to normal in no time." she giggled.

"I think I'm gonna puke! Why did you do that to me??" he cried out in frustration.

"Every guy needs to experience a good kick to the jewels at some point."

"I think it really has a tendency to put some things into perspective!" she cackled.

"You don't know how this feels!" he shot back in anger.

"You're right! And I never will! So next time you think you can defeat me, you should remember this moment."

"That was a fucking lucky shot, sis!!!" he yelled out trying his best to defend whatever was left out his manhood at this point.

"Oh sure...of course..." she nodded her head mockingly shocked that he was still trying to litigate this.

"Maybe he hasn't learned his lesson yet after all..." she thought to herself.

"Here let me help you up, big guy. Let's get you comfortable on the couch." she offered reaching down and grabbing him by the arm, to help lift him up.

Slowly her brother got to his knees, still in a tremendous amount of discomfort. Even though he was still made, he couldn't help but feel a little grateful that she was helping him up.

"Thanks sis..." he said sheepishly now on one knee ready to try and stand up.

"You won't be thanking me in a moment..." Jenny thought to herself with an evil smirk before suddenly shooting her foot out between his parted legs, connecting with his nuts once more.

"Ohhhhhhhhh...." Johnny gasped as her foot collided with his testicles sending another familiar shockwave through his body as he collapsed back down onto his side.

"Whyyyyyyy... fuck.... whyyyyy...." he moaned now rolling around on the floor with his hands clamped onto his aching sack.

"That one felt really squishy on my foot..."

"I didn't crack your eggs, did I?" she added now really belly laughing at her brother's pain.

"This isn't fucking funny!" he cried before his stomach suddenly cramped up.

"Ohhh fuck... oh shit... I'm... I think I'm gonna puke..."

"Don't worry. This is all part of the natural process." she giggled.

"What process?!" he cried out trying his best not to puke all over the carpet.

"Getting kicked in the nuts, of course!" she exclaimed joyously, knowing he could never come close to delivering such levels of unadulterated pain.

"When... when I get up... you're fucking finished." he warned.

Jenny couldn't help but be thoroughly amused by his empty threats.

"How many more times do I have to kick you in the balls before you finally get it?"

"I mean... I'm perfectly happy to keep doing it until you get the message." she giggled.

Now angered and humiliated beyond reason, Johnny mustered every ounce of energy he could to begin to rise up from the ground, struggling but making progress.

"You're... fucking dead..."

"Oh look at you, big guy! You've got a little fight left in you, huh?!" she cackled seeing him continually have to stop to try and catch his breath. It took a minute but her brother was finally up on one knee stupidly leaving himself wide open for yet another devastating kick. But Jenny had other plans...

"I guess I wasn't able to kick the fight out you, so let's try something different!" she exclaimed as she darted her hand out and ran it through the open leg of his gym shorts, quickly snatching up his bare testicles causing her brother's eyes to widen in both surprise and fear as she squeezed down on his balls, sending his mouth agape as it released a feeble gasp.

"Sis... my... my balls..." he struggled.

"No, no. These are MY balls!" she cackled.

"Fuck... you..." he hissed back in defiance.

"Let me explain something to you very plainly." she began staring him dead in the eyes.

"As long as you have these pathetic balls hanging between your legs, I will always be more powerful than you." she smirked feeling as powerful as ever as she held her brother's most prized possessions firmly in her grip.

"You can grow all the muscles in the world but at the end of the day, your testicles will always betray you. One flick, one kick, one squeeze away from being at my mercy."

He was finally starting to get the picture and his place in the world.

Johnny stared back in fear as his body trembled in pain. He'd never felt so humiliated in all of his life. Why did he have to be born a man, he couldn't help but think in this rare moment of pure vulnerability. Jenny could see the wheels turning in his head and knew he was starting to understand.

"So are you ready to acknowledge my superiority over you now?" she asked tightening her grip on his balls, sending him spiraling.

"YES! YES!" he cried out into the air.

"Good boy. Now tell me that your balls are devoted to me." she smirked.

"They're yours! They're yours! Dear God just let them gooooo...." he pleaded.

"Men are so pathetic." she thought to herself as she looked down to admire her grip on his balls one last time before planning to release them back to her brother, but she was met with quite a surprise. Poking out from the leg of her brother's shirt was a massive cock, veiny and pulsing. He had to be at least a good 10 inches. Jenny's eyes widened and she quickly glanced back up at her brother while finally letting go of his testicles.

"Are we enjoying ourselves?!" she laughed as Johnny's face turned ten shades of red as the humiliation continued.

"Uhhh... I..." he stumbled over himself, feverishly trying to cover up his cock with the leg of shorts, but the beast had been unleashed and his short shorts were of no use when it came to containing his massive member.

"Don't worry bro..." she winked. "Your secret is safe with me."