Continued from Part 12 here:

https://www.reddit.com/r/BallbustingStories/comments/1dwwpxf/part_12_the_ballbusting_cheerleading_sisters/

Scotty could hear the familiar excited laughter of Alexia and McKayla in the room across the hall, but Naomi's voice was new to him. Although he'd seen her in passing, he'd never formally met the beautiful, 5'11" brunette who was clearly hardcore into fitness. He was both nervous and excited at the idea of another woman joining in on their games. Scotty's relationship with the Taylor sisters always had a flirtatious, sexual chemistry ever since they first began smashing his balls. So, the fact that his girlfriend was willing to "share" Scotty with her younger sister Alexia was nothing new. However, he wasn't sure what to be more concerned about; the fact that his girl was openly inviting a new woman to have a shot at his balls, or the fact that Naomi was apparently excited to do it!

Scotty had barely finished cleaning himself up, and was pulling his boxer briefs back up towards his still tender balls when the laughter of the trio of young ladies headed back towards McKayla's bedroom.

"...He's used to it!" McKayla explained as she barged back through the door, with Alexia and her girlfriend Naomi close behind. "Balls of steel, right babe?"

Scotty blushed as he stuffed his package back into his trunks, and grabbed his shirt to try and cover himself up. McKayla grabbed his shirt from him and tossed it right back in his face, blocking his vision just long enough for Alexia to drop to her knee, ball up her fist, and deliver a powerful PUNCH, right to his Nuts!

"Balls of Steel!?" Alexia declared, as Scotty crumbled to his knees. "We'll see about that!"

"Oh my!" Naomi laughed with a giant smile breaking across her beautiful face. She'd seen the ballbusting chemistry of the two sisters at the self-defence class, but the fact that they were abusing the younger boy from next door who happened to be McKayla's boyfriend certainly felt taboo, and naughty. Naomi was 26 years old, so she was 7 years older than Scotty.

Kneeling on the floor before the sisters and Naomi, Scotty grasped his aching balls that his girlfriend's hot, younger sister had just punched through his body. "Holy shit Alexia," he gasped for air, as he shook the shirt off his face to get a better look at his attackers. Alexia was wearing a skimpy 2 pc pair of silk PJs loosely cover her thong, and her perky bare tits visible through the thin silk top. Her smooth, tanned skin and blonde hair made her just as attractive as her sister. She placed her barefoot on the back of his shoulder as she flexed a victory pose to her admiring girlfriend.

Naomi smiled back at her, clearly impressed by her work. "Nice punch!" She smiled down at Scotty, feeling almost sorry for him, "You sure he can handle us?"

Scotty couldn't believe his eyes. Naomi was absolutely gorgeous. She had long, thick black hair, and big brown eyes. Her wide smile was filled with perfect white teeth. Her outfit looked almost like a slutty Halloween football player costume (probably Alexia's idea). Her perfect double D tits were barely covered by her tight, cut off top. Her nipples were covered, but everything below that was bursting out the bottom of the crop top. Her breasts were so hard he expected they might be implants, which was fine with him. Her sporty thong was covered by a tight pair of booty shorts. He knew she was a taller woman, but was surprised to realize she was a good 6 inches taller than the sisters and a few inches taller than him. Her powerful arms were crossed, and Scotty gulped imagining how much a punch from her would hurt. His mind considered the same for her kicks as he noticed her long, muscular legs and large size 12 feet! Despite their size, her feet (like the rest of her) were incredibly feminine and sexy, with high arches and freshly painted toe nails. Perhaps he stared a little too long at Naomi's feet because she had to cup his chin to raise his face back up towards hers, "You like feet?" Naomi teased, as McKayla and Alexia joined her on either side."

Scotty, I'd like you to meet my girlfriend Naomi!" Alexia beamed with pride, as she squeezed her with a hug, squishing her face up against the side of her massive boob.

McKayla added, "She's a Krav Maga instructor!" smiling down at her boyfriend, "So she basically Kicks Balls for a living!". McKayla placed her own sexy barefoot on Scotty's thigh dominantly.

Naomi joined the sisters' placing her large foot directly onto Scotty's groin. He gasped, shocked by her boldness, and willingness to step on his manhood upon their first time meeting nonetheless! He did little to resist as he stared up at the trio of beautiful women. She gently applied pressure as her single foot completely covered Scotty's massive package. "You might not like these feet!" Naomi teased, as she leaned into him further testing his limits.

The three women laughed as Scotty's heart sank.

Naomi and Alexia stepped aside as McKayla reached down and grabbed her boyfriend firmly by the balls. She yanked him up to his feet, and still squeezing his balls she dragged him out the bedroom door. "Let's take this party to the basement! I've got some games that you girls are gunna Love!"

*   *   *

Scotty sat awkwardly on the couch in the basement, feeling exposed wearing only his boxer brief trunks (that his girlfriend insisted he wore). He had no idea that he'd be showcasing them in front of his girlfriend's younger sister and her 26-year-old girl crush! He sipped on his beer hoping it would help with the pain.

McKayla, Alexia and Naomi sat over in the open gym section of the basement, sharing sips of vodka from a bottle as they chatted openly about busting balls right in front of Scotty. He was completely ashamed and emasculated as the sisters bragged about what they'd done to him in the past.

Naomi was bursting with excitement, like a kid in a candy store. "So he's really going to let us BUST him!?"

McKayla almost spat out her shot of vodka laughing. "WHOA Killer! Those are my man's balls! We can bust them, but not like completely BUST them!" McKayla laughed as the three of them remembered the time they had stomped Naomi's ex-boss in the testicles until they exploded between their cheer shoes.

Alexia poured another round of shots as they got the party started. "And he doesn't exactly Let Us do it, but it's pretty easy to manipulate boys if you know how," Alexia playfully smacked her girlfriends firm ass as the two of them looked back teasingly toward Scotty.

Naomi played along as she wiggled her ass in his direction. "I'm not gunna lie ladies, ever since we crushed Chuck, I've been craving it! I cracked another guys jock in Krav Maga this week, but it just wasn't the same now that I've cracked the real thing!"

All three laughed, Alexia and McKayla knew exactly how she felt.

"I think we need to join her class," McKayla declared to Alexia. "I mean it seems like Krav Maga is basically non-stop ball shots! We'd be great at it!"

Naomi laughed, reminiscing of all the times she'd hurt men in her own classes. "You're not wrong, there's a ton of groin strikes in Krav Maga! But between your mom and I, there's probably not enough balls to go around if you two joined!" Naomi shot back a shot of vodka as she continued. "Honestly, I'm lucky I have your hot momma in class, and these girls - " she cupped her large, firm breasts showing them off. "It's probably our sex appeal that brings them in the door. But after seeing what we do, it can be hard to get them to stick around." Naomi imitated a strong knee thrust in Scotty's direction, hardly being able to control her excitement.

The trio howled as Scotty just slouched down in the couch looking terrified.

McKayla wanted to hear more about Naomi and her classes, "But seriously, I mean all classes can't be like the one we had with our Cheer Squad?"

Naomi laughed, recalling the sisters and their team's enthusiasm for targeting the groin. "No, you girls were next level ball busters! That was a first for me. But a lot of the training does focus on real world situations where you need to defend yourself, and the testicles are an ideal target." Naomi continued her story, "In fact, I guess maybe targeting the groin was what originally triggered my interest in self-defence."

Alexia hugged Naomi, her head naturally being at the level of her voluptuous breast was another thing she loved. "When was the first time you hit a guy down there?"

Naomi thought back to her beginnings and laughed. "Did you girls have self-defence in your gym curriculum? For us it was like grade 8 I think?" Alexia and McKayla nodded remembering how fun it was. "Before that, I knew what groin attacks were obviously, but I don't think I'd ever done it, and I always wanted to try. Our gym teacher was a woman, and she had a blast going over kicks, knees, grabs etc. The boys were very uncomfortable!" Naomi laughed and squeezed Alexia with excitement as she chuckled. "We weren't actually hitting the guys in class unfortunately, but after that pretty much every girl in our grade wanted to try it! That whole month it was like non-stop ball shots at our school! Boys were getting racked just for being boys pretty much, it was hilarious!"

McKayla and Alexia beamed at one another, remembering a similar occurrence at their school. Alexia thought back and wondered if that was when she officially became known as the "Sack Tap Princess".

Naomi continued to remember her younger years, "My friends and I must have nailed like 20 boys! Not as ruthless as you two of course, but a punch here, a knee there. Back then, I was the Captain of the girls' soccer team and I remember just fantasizing about giving a guy a FULL FORCE soccer kick, Right in the Balls!" Naomi took a lunge forward bringing her kicking leg way back before launching it at an imaginary pair of testicles as Alexia and McKayla cheered. "There was this one idiot boy who actually agreed to let me do it for $20, but he kept turning and covering himself every time I started running at him." Naomi was glowing as she remembered the events. "So we had like four people holding him, holding his arms, spreading his legs! Oh my god I was seriously ready to kick his balls to the moon -" Naomi pouted to her friends, "but then a teacher saw and made us stop."

"That sucks!" McKayla and Alexia sympathized with her.

"It did! Totally!" Naomi continued, "but honestly that was probably the start for me. I was always into fitness, but after that I started getting into karate and eventually found Krav Maga. Aiming for the groin was always just so Funny, so Empowering! Like guys think they can do anything they want to a girl, but once you know what you're doing it's really us Girls who have all the Power!" The three girls clinked their shot glasses together and cheered "To Girl Power", before chugging the rounds.

"Well," declared McKayla, her eyes sparkling like her shiny, golden bikini top, "today's your chance to kick some balls to the moon!" Naomi and Alexia cheered as Scotty shivered in fear.

"Here's my game," began McKayla, as she pulled out a pad of paper and a pen and began tearing the paper into smaller rectangles. "Let's come up with a bunch of things we want to do to our toy over there, and we'll draw them randomly..."

Alexia, who was familiar with their games wanted to make sure Naomi was comfortable, "But there's going to be sexy elements as well, that way we can keep him going. Is that ok?"

"Hey, just because I hate balls doesn't mean I hate dicks," Naomi exclaimed. "I just prefer your taco!" Naomi ran her hand seductively over the crotch of Alexia's smooth, silk bottoms.

"Mmmmm," Alexia purred as she nuzzled her face into Naomi's' massive tits, and whispered, "Promise we won't get jealous at one another if we have to play a little sexy with Scotty?" she looked up to Naomi for approval.

"Of course not," Naomi whispered so Scotty couldn't hear. "We're a fucking team, we can use this meat stack for our own pleasure, as long as we can BUST his Balls too..." Naomi looked over at McKayla, "But he's your boyfriend, I don't want to cross any lines?"

McKayla continued to jot down moves and ideas for their game, as she whispered back to Naomi, "I don't really care, like he's barely my boyfriend, more like my slave." McKayla looked up from the paper and smiled devilishly, "Momma said it best; he's just here for our pleasure, when we get tired of him, we'll POP his Nuts!"

The trio laughed, before McKayla added, "but don't break his Cock! I LOVE his cock!"Naomi and Alexia agreed, "Just his balls, we'll only Break his BALLS!"

Part 14 available now:

https://www.reddit.com/r/BallbustingStories/comments/1e6cwlr/part_14_the_bb_sisters_slumber_party_round_1_who/