Bratty sister 5: Sister's first ballbusting climax and help from sister's friend

Part 5 of the story. Read the other parts first if you haven't!

\*\*\*ALL CHARACTERS INVOLVED ARE AT LEAST 18 YEARS OLD\*\*\*

"Ohhh..."

Feeling a squeezing pressure in my lower half and a dull, aching pain spreading throughout my crotch, I hazily opened my eyes.  After a few seconds of pain, I had completely woken up, and raising my head off my pillow, I saw my sister in her usual spot, sitting on her knees to my right with her ass in my face and her hands on my balls.  *Just enjoy it...*  As she was facing away from me and had not noticed that I was awake, I slowly opened my legs and rested my head back on my pillow, enjoying the pain of my sister's soft hands gripping ever stronger around my exposed nuts.  *She just immediately strips me naked now, doesn't she?*  As she playfully squeezed my balls, I could feel my dick start to grow, and as it did, my heart started to race.  *Once she sees me get hard, she's really going to bust my balls!*  My body trembled slightly in anticipation as my sister turned to look at my now completely erect dick.  She grabbed my erection at the base of the shaft and turned to face me, a playful smile on her face.

"There it is!  I knew your cock was gunna get hard!  Good thing I'm here to keep it in check!"

Nat quickly moved between my legs, sitting on her knees as she smiled at me, her eyes slightly squinted and her freckled cheeks turning red.  

"Time to crack your nuts!"

As she reached her hands down, she grabbed one of my balls in each hand and held them in place as she began digging her thumbs into each respective orb.  My head craned back into my pillow as I let out a soft moan, and I spread my legs further apart as my sister continued to knead my balls with her hands.  I looked at her face, and just like yesterday, she was starting to get excited as she was biting her bottom lip and staring intently at the balls she was destroying and the cock she was trying to deflate.  I recalled again how she had acted when she was busting me with our aunt.  *It really seemed to get her going when Aunt Jess was telling her those stories.*  I raised myself to a seated position, holding myself up with both arms and facing her as she was kneeling down in my crotch.  

"Oh Nat, my balls!  You're squeezing my *balls!*

The petite brunette looked up at me, giggling and with a cute smile on her face.

"I have to teach this naughty cock a lesson!  You'd better not cum all over the place!"

"Nat, your gunna *crush* them!  Oh fuck, my balls!"

My sister's breathing started to get ragged, and she looked up again to stare into my eyes.  As I felt some movement in the bed, I looked down to see that she had started to buck her hips, just as she had the day before.  She moaned and bit her lip, then looked back down at her targets.  

"AH, yeah!" She gasped, her hips moving more and more violently.  "Your balls!  I'm gunna destroy your balls!  Your big, thick cock will never work again.  Ah, AHH!"

As the strength of her grip increased, my head flew back and hit the pillow, and I scooted myself closer to her.  I looked down to see her gasping and violently bucking her hips as she tried desperately to destroy my balls.  As I watched her modest chest rise and fall from her ragged breaths, I could no longer control myself.  Reaching down, I grabbed my throbbing dick and started stroking its entire length as if my life depended on it.  

"Oh Nat, my *fucking balls!*

"No!  Ah, ahh... Don't touch that... ahh... that big, filthy cock!"

"Oh Nat, NAT!"

As I hit the threshold of what I could handle, my hips raised in the air, and I came.  My shot hit Nat directly on the chest, and then a second later, two more shots followed suit, covering most of her pajama top.  As I covered her entire torso, she continued to forcefully thrust her hips, her right hand moving from my ball to her own crotch, holding it there as if she were trying to stop some imminent, unstoppable force.  

"No, no... Ah, Oh!"  As Nat continued to moan, she must have hit her climax, as she threw her head back, her left hand moving to cover her mouth as she screamed.  "OOHHH!"

The petite woman seemed to freeze in place for a moment, followed by her lower half convulsing, and her entire body falling forward.  She landed on my chest, laying in a daze as she gasped for air.  Laying on my back with my balls burning and my head swimming from the intense orgasm I'd just experienced, my hands moved to caress her lower back as I, too, tried to catch my breath. *Aunt Jess, you're a genius.*  After a minute of labored breathing, Nat put her hands on my chest, pushing herself up to a seated position and looking me in the eyes, face completely flushed.

"I-I... I didn't feel good just now!"

"Wha-?"

"I DIDN'T JUST CUM FROM CRUSHING YOUR BALLS!"

*I didn't even say anything...*

Her face beat read, Nat turned her gaze down toward my now-limp dick and red, swollen balls, and as her brows furrowed, she launched her right fist into my nuts, causing a loud clapping sound.  As I moaned from the pain, she pulled her hand back to again punched down, striking both of my balls with her fist and causing me to bring my legs together, reaching down to grab my battered balls with both hands and roll onto my side.  

"Oh fuck... Nat, my balls..."

As she got up off the bed and quickly walked to the door, she turned to face me, her lips pouting and with tears in her eyes.  

"I did *NOT* get turned on by busting your balls, you hear me?!  If you tell anyone that I came, I'm going to castrate you!"

She ran out of my room, and as I heard her run to her own room down the hall and slam the door shut, I continued to hold my throbbing balls.  *Did she actually just cum from squeezing my balls?*  I got myself up to the side of the bed and pulled my shorts back up, being careful not to hit my already badly damaged nuts.  Thinking that I should say something to her, I started to head to her room, but was interrupted by the sound of a knock at the front door.  *I'm sure it's fine.  I'll try and talk to her later about it.  If nothing else, I'll offer to let her kick my nuts as an apology.*  I turned to the staircase and started heading to the front door, the entire time holding my swollen balls with one hand in an effort to keep their painful bouncing to a minimum.  I opened the front door, still with one hand on my crotch, to see a familiar blonde, beautiful, and busty young woman.  

"Oh, hey Chloe.  What are you doing here?"

Chloe, Nat's best friend and the first girl to find out about my secret kink.  She was wearing a tight pink tank top and a black pair of short shorts.  Her tank top was low-cut, exposing much of her massive tits and causing my dick to start growing.  

"Mr. big brother!" The busty blonde exclaimed with a bright smile on her face, "I'm here to see Natalie!  We're gunna study today."

"Oh, sorry," I responded, looking up at the stairs where I knew my sister was still locked in her room.  "Nat's not feeling too good right now."

"Oh, I see," she responded, her gaze traveling south to see my hand still holding my bruised balls.  "Does it have something to do with your cock and balls?"

*There it is.  She fools you by looking all proper and modest, but as soon as she's alone with you, this sexy dirty talk starts.*

"Uh, well..."

"Did you not let her have her fun with those nuts today?" she asked, pointing down to my crotch.  

"Have her fun?  What are you-"

"That's all she ever talks about!"

As Chloe talked, she walked into the house, closing the door behind her and finding a seat on the couch.  

"Every day when we're texting, all she ever talks about is that "big cock" and those "smashable balls" of yours.  She's constantly telling me stories about how much fun she's having trying to destroy your nuts."

As this beautiful woman went on and on about my sister's apparent infatuation with causing me constant intimate pain, my dick instantly sprang to life, pitching an impossible-to-hide tent in my baggy shorts.  Looking down at my crotch and noticing the new, throbbing bulge, Chloe's bright smile was quickly replaced by the devious grin I'd seen only a couple of days prior.  

"Well, speak of the devil; there's that huge cock now."

Crossing her arms under her tits, Chloe shot her foot out, delivering a fast but not-so-hard snap-kick to my balls.  As she retracted her foot, both of my hands went to cradle my nuts, leaving nothing to hide my erection.

"Looks like you enjoy the pain just as much as ever," she said, staring intently at my throbbing dick.  "How about I-"

"More..."

"What?"

Chloe's devious grin quickly disappeared as she watched me pull my shorts to the floor, exposing my hard dick and red, swollen balls.  Her face turned a deep red as she covered her mouth with both hands, embarrassed but obviously interested.  

"It's huge!" she exclaimed, her feed bouncing on the ground in excitement.  "And your balls, they're so swollen!  Is this from when I kicked them before?"

I lifted my dick up, holding it against my stomach to show the excited woman the extent of the bruising on my naked balls.  

"No, Nat's been really going to town on me lately.  That kick you gave me has my dick hard again, but she's locked herself in her room."  I walked slowly toward her, the hand on my dick slowly starting to stroke up and down its length.  "Chloe, I want you to bust my balls, like you did at the karaoke place."

I couldn't believe how brazen I was being.  Not long ago, I would have denied my kink with every fiber of my being, but now I was exposing myself and asking my sister's friend to bust my balls while playing with my dick.  As I stared at her, continuing to run my hand up and down my erection, Chloe's face turned a deeper shade of red.

"You... You really liked it, didn't you?  When I kicked your balls."  Her devilish grin returned, her eyes shifting from my dick to my eyes.  "I knew you liked it when you came last time, but to suddenly start stroking your cock and asking a girl to kick your nuts..."

My heart skipped a beat.  *Please please please...*  Chloe walked up to me, continuing to stare into my eyes as she put her hands on my shoulders and leaned in, her mouth next to my ear as she started to whisper in a hushed, sexy tone.

"Alright, big boy.  I'll bust these balls, but just like last time, you'll have to do me a favor."

"Stay still, right?"

"No.  All you have to do is keep stroking that big, hard cock."

With this, Chloe launched her knee up into my crotch, smashing my balls into my pelvis and lifting me up onto my toes.  As my body rocked from the sudden impact, I let out a moan as I furiously started stroking my dick.  I watched as she retracted her knee from my balls, pulling it back behind her as she wound up for another hit.  

"Keep that hand moving, or I'll *really* fuck these balls up."

Chloe continued to ram her knee up into my balls, only to pull her leg back and repeat the process.  All the while, I continued to furiously run my hand up and down my dick, burying my face into her neck and biting the collar of her tank top.  After the sixth knee, I started to collapse, but the busty blonde caught me and forced me to stand up tall.  

"We're not done yet!" she yelled, excitement evident on her face as she was biting her lips and breathing heavily.  "We're not stopping til' there's nothing left of those big, stupid nuts!"

As she continued to deliver knee after knee, I leaned forward again, resting my forehead on hers as I watched her staring intently at my poor, vulnerable balls.  As I felt myself nearing my climax, I reached out with my free left hand, grasping her right tit and firmly squeezing it.  As my hand fondled her large, soft breast, she kneed my battered balls even harder.  

"You pervert!"

Even as she said this, the devilish smile never left her face, and with one final knee, she caused me to cross the point of no return.  As I started bucking my hips, I moved my left hand from her breast to her lower back and pulled her closer, stroking my dick as hard and as fast as I could until I came.  

"Oh, Chloe!  Fuck!  *Fuck*!"

As I started to shoot onto her tank top, she clasped her hands together and brought them to her chest, giggling as she watched my dick bounce and twitch with each shot.  

"Wow... You really *love* getting your nuts cracked, don't you?"

As my climax ended and my body started to relax, I fell into the beautiful woman as she caught me and held me up with her body.  I buried my face in her neck, breathing heavily and snuggling my face next to hers.  After a few deep breaths, I regained my composure enough to walk myself to the couch, falling onto it and laying my head back.  Continuing to gasp for air and my vision becoming hazy, I looked over at the young blonde woman that had just thoroughly busted my already sore balls.  

"That..." I said, breathing raggedly between words, "was fucking amazing."

As she stared at me in my pathetic state, she put her hand on her chin as she looked toward the staircase.  

"Now that I have *your* problem taken care of, I'm gunna go check on Natalie.  If it has something to do with you and your balls, I'll try to smooth things out!  I need to borrow a tank top anyway, seeing how you got your fuckin' cum all over this one."

With a giggle and a playful wave, she ran to the stairs, stopping at the bottom to turn around and look at me.

"And try to keep that big cock under control for a little bit!" and with another giggle, she ran upstairs.  

Laying on the couch, my head still spinning, I sluggishly pulled my shorts back up over my throbbing balls and sat up.  *Borrow a tank top?  Chloe, there's no chance in hell those tits are fitting in ANY of Nat's clothes.*  I paused at the thought.  *Wait, borrow a tank top?  Is she going to tell Nat what happened?*  I felt a chill down my spine.  *Nat doesn't know what happened at the karaoke place; she thinks that she and Aunt Jess are the only ones that have ever had their way with my balls.*  I looked toward the stairs, a knot slowly forming in the pit of my stomach.  *Nat nearly destroys my balls when she's in a GOOD mood... Is she going to be mad about this?*  As I stood up, I heard Chloe knocking on a door upstairs, and the next words I heard sent me into a panic.  

"Natalie!  It's Chloe!  I need to borrow a tank top.  Your brother shot his cum *all over me!*

*Shit!*

As I stood there, petrified from a sudden feeling of overwhelming dread, I tried to steel my resolve for what my bratty little sister had in store for me.  

\*\*\*

Thanks for reading! I had some formatting problems, so had to delete and repost a couple of times, sorry about that. Let me know what you think!