The Kickboxing Class - Part 3

[Part2](https://www.reddit.com/r/BallbustingStories/s/hW9u2eHevT)

It has been a few months since that night in the office. Vanessa is a full employee now. We live together. She keeps me on a very short leash. If I forget to take out the trash or look at another woman, she punishes my balls. It happens regularly. It is not as brutal as the kick that made me puke, but she squeezes and slaps them enough to remind me who is in charge.

We were walking to the subway after work. Vanessa was chattering away as usual. She was holding my hand. Her grip was surprisingly strong.

"I am so mad at Mindy," she said. "She borrowed my favorite t-shirt without asking. It is totally ruined."

"Ruined how?" I asked. "Did she spill something on it?"

"No," Vanessa sighed. "She stretched it out. I put it on this morning and it hangs off me. The fabric is all loose. It is unwearable now."

I looked at her chest. She was wearing a tight sweater. Her boobs were already massive. They were round and heavy. I could not imagine how anyone could stretch out a shirt more than she did.

"Stretched it out?" I asked. "How is that possible? You fill out your shirts pretty well."

Vanessa stopped walking. She turned to face me. She crossed her arms under her chest, pushing her big tits up. "Because she is bigger than me, Jake. A lot bigger."

"Bigger?" I asked. My voice squeaked a little. "You have huge boobs, Vanessa. How is she bigger?"

"I am a 32G," she said matter of factly. "Mindy is a 32J. She is enormous."

I stood there with my mouth open. A 32J. That was cartoonishly huge. I tried to picture it. My dick twitched in my pants. Vanessa noticed. She smirked and patted my crotch.

"Down boy," she said. "She is my sister. You won't like what happens if I catch you perving. And she is coming to stay with us."

"What?" I asked. "Coming to stay?"

"Yes," she said, starting to walk again. "She got an internship at our company. She starts on Monday. She will stay in the guest room for a few weeks until she finds her own place."

\------

Mindy arrived on Friday evening. She looked just like Vanessa but younger. She had the same dark hair and big eyes. But her chest was insane. She was wearing a low cut top that showed off miles of cleavage. Vanessa was right. She was huge. She walked in like she owned the place. She dropped her bags on the floor without a care.

"Nice place," she said. She looked around the living room with a critical eye. "It is a bit small though."

Vanessa rolled her eyes. "It is big enough for us. Just don't touch my stuff, Mindy."

"Whatever," Mindy said with a shrug. "If your stuff fits me, I might borrow it."

The first few days were tense. Mindy was a total brat. She left her clothes everywhere. She ate all the food in the fridge. She loved to annoy Vanessa. She would wear Vanessa's favorite clothes just to provoke her.

On Wednesday Vanessa had to work late at the office. I was in the living room watching TV. The bathroom door opened and Mindy walked out.

She had just taken a shower. She was wearing a small white towel. It was barely wrapped around her body. It was so short it barely covered her ass. Her hair was wet and slicked back. Water droplets ran down her neck and disappeared into her cleavage.

I stared. I could not help it. Her tits were massive. They were even bigger than Vanessa's. They were heavy and round. They pressed against the towel, threatening to burst free. The top of her boobs spilled out over the fabric. Her skin was pale and smooth. She looked incredible.

She saw me looking. She smiled. It was a wicked smile. She walked over to the couch. She stood right in front of me, blocking the TV.

"Enjoying the view, Jake?" she asked. Her voice was playful and teasing.

I looked up at her face. "I was just watching TV, Mindy."

"Sure you were," she said. She shifted her weight. Her heavy tits jiggled. "You are staring at my chest. It is okay. I know you have a thing for big boobs."

I swallowed hard. "You are very... developed."

"I am a 32J," she said proudly. She thrust her chest out a little. "Bigger than Vanessa. She hates it."

I did not say anything. My eyes drifted back down to her chest. The towel was slipping a little. I could almost see her nipple.

"Vanessa told me about you," she said.

My heart stopped. "What did she tell you?"

"She told me she has to keep you in line," Mindy said. She giggled. "She told me she kicks you in the balls when you are bad. That is so funny."

I felt my face get hot. "Yeah. It is a thing."

"Does it hurt?" she asked. She leaned closer. Her boobs were right in my face. They smelled like vanilla soap.

"Yes," I said. "It hurts a lot."

"Good," she said. "You deserve it if you are looking at other girls." She looked down at my pants. I was getting hard. "Look at you. You are getting a boner right now. If Vanessa saw this, she would go crazy."

"Please don't tell her," I said. My voice was shaking.

"I don't know," she said. She tapped her chin with her finger. "I bet she would crush your nuts again if she knew you were looking at my tits. She would probably kick you until you puked."

My balls ached at the thought. "I will stop looking. I promise."

"You better," she said. She turned around and walked toward the guest room. "Or I might just have to tell her myself." She looked back over her shoulder. "Nice dick, by the way."

\-------

The next few days were absolute torture. Mindy was relentless. She seemed to make it her mission to drive me crazy. She walked around the apartment in tiny shorts that showed off her ass and tight tank tops that looked like they were about to rip. She would bend over in front of me to pick things up, giving me a perfect view down her top. Her massive J-cup tits would sway heavily with every movement.

Vanessa was stressed out having her sister there. She was snapping at me over small things. Because of the tension, she had not milked me in almost a week. My balls were paying the price. They felt heavy and swollen. They were aching constantly. I had a permanent dull throb in my groin. Every time I got an erection from looking at Mindy, the pressure in my balls got worse. I was walking around with serious blue balls.

On Saturday morning I was in the kitchen making coffee. Mindy was sitting at the small table. She was wearing a white tank top with no bra. Her nipples were poking through the thin fabric. Her tits were resting on the table edge. They looked like two giant watermelons.

I froze. I could not look away. My eyes were glued to her chest. My dick instantly turned into steel. My swollen balls throbbed in protest.

"Like what you see?" she asked. She looked up at me with a smirk.

"I... uh..." I stammered.

"Jake!"

The voice was sharp and loud. I jumped and spun around. Vanessa was standing in the doorway. She was wearing her robe. Her hair was messy. She was looking right at me. Then she looked at Mindy, who was slowly standing up and pulling her top up.

Vanessa's eyes narrowed. She saw exactly where I was looking. She saw the guilty look on my face.

"I asked you a question, Jake," Vanessa said. Her voice was dangerously low. "What are you looking at?"

"Nothing," I said quickly. "I was just getting the sugar."

"You were staring at her tits," Vanessa said. She walked into the kitchen. "I saw you."

Vanessa walked over to me. She looked furious. Her hands were on her hips. She pushed her chest out, trying to compete with her sister.

"You are a liar," she said. "You were looking at her huge rack. I know you were."

Mindy laughed. She walked over and stood next to her sister. The two of them together were a wall of tits. It was an incredible sight. Mindy was slightly taller and her chest was undeniably bigger.

"He was totally staring," Mindy said. "He looked like he was going to drool."

I backed up against the counter. "I am sorry. It was an accident."

"It does not matter," Vanessa said. "You know the rules. If you look at other women, you get punished."

Vanessa reached out to grab my arm. But Mindy stepped in front of her.

"Wait," Mindy said. "He was looking at my tits. So I should be the one to punish him."

Vanessa frowned. "He is my boyfriend. I punish him."

"But he disrespected me," Mindy argued. She crossed her arms under her massive chest. Her boobs looked like they were going to burst out of her top. "I think I should get to kick him. Or squeeze him. Whatever you do."

Vanessa looked at me. Then she looked at Mindy. She seemed to think about it.

"You have never kicked a guy before," Vanessa said.

"So?" Mindy asked. "How hard can it be? You do it all the time."

"I have trained for years," Vanessa said. "You need to know how to do it right."

"I just want to smack his nuts," Mindy said with a grin. "Come on, Vanessa. Let me have some fun. He deserves it for perving on me."

Vanessa sighed. She looked at my crotch. I was terrified.

"Fine," Vanessa said. "You can punish him. But do not rupture him. I still need his dick."

Mindy clapped her hands together. Her huge boobs bounced wildly.

"Yes!" she said. "This is going to be awesome."

"Please, Vanessa," I begged. I backed up until my spine hit the kitchen counter. "I am sorry. I will never look at her again. Just don't let her kick me. My balls are already so full. They hurt so much."

"You should have thought about that before you stared at her chest," Vanessa said. She crossed her arms under her own impressive tits. "Take off your pants, Jake. Mindy needs access."

Mindy was practically vibrating with excitement. She was grinning from ear to ear. "Come on," she said. "Don't be a baby. Drop them."

I looked at the door. I knew I couldn't escape. Vanessa was blocking the way. I slowly hooked my thumbs into the waistband of my sweatpants. I pushed them down. My boxers followed. My huge cock sprang free. It was rock hard and throbbing. It slapped against my stomach with a heavy sound. My balls hung beneath, swollen and purple from the days of neglect.

"Holy crap," Mindy said. Her eyes went wide as saucers. She stared at my dick. "You were not lying, Vanessa. That thing is massive."

"Focus, Mindy," Vanessa said. "We are here to punish him, not admire his equipment."

"Right," Mindy said. She licked her lips. "So I just hit them?"

"Yes," Vanessa said. "But you have to mean it. Don't tap him. Really smack his nuts."

Mindy stepped closer. She reached out with her small hand. She cupped my heavy sack. Her fingers were warm. She weighed my balls in her palm like she was testing fruit.

"They feel so tight," she said. She gave them a gentle squeeze. "Like they are going to pop."

"They are full of cum," Vanessa said. "Because he has been a bad boy."

"Let's let some out then," Mindy said.

She pulled her hand back and then slapped my balls forward.

"Ah!" I yelled. The pain was sharp and immediate. My knees buckled.

"Harder," Vanessa said. "That was weak."

Mindy frowned. She wound up again. She slapped my testicles with the back of her hand. This time she put her whole arm into it.

\*Smack.\*

The sound was loud in the small kitchen. I groaned and doubled over. The pain shot up into my stomach. My dick bobbed wildly in front of me.

"That is better," Vanessa said. She walked over to us. "Now try a squeeze. Grab them like you are trying to crush a grape."

Mindy wrapped both hands around my swollen sack. She dug her fingers in. She wasn't gentle at all. She crushed my balls against my pelvis.

"Oh god," I gasped. "Please. It hurts. Stop."

"Look at his face," Mindy giggled. "He is turning purple. Just like his balls."

"Keep squeezing," Vanessa ordered. "He can take it."

Mindy increased the pressure. I felt my testicles flattening under her grip. It was agonizing. I was panting for air. Tears were forming in my eyes. But my dick was still hard. It was twitching right in front of Mindy's face.

"Wow," Mindy said. "He likes it. His dick is getting harder."

"He is a pervert," Vanessa said. "Kick him now. While I hold his dick out of the way."

Vanessa grabbed my shaft. It was so thick her hand didn't fit all the way around. She pulled it up against my stomach. This left my balls completely exposed and defenseless.

Mindy stepped back. She raised her bare foot. She aimed carefully.

"No," I whimpered.

Mindy swung her leg. Her foot connected squarely with my testicles.

\*Thud.\*

The impact lifted me onto my toes. I couldn't breathe. The world went white for a second. I slumped against the counter and slid to the floor.

Mindy started to laugh. Vanessa was laughing too.

"Good form," Vanessa said. She looked down at me. "How do they feel, Jake?"

I was curled in a fetal position. I was clutching my groin. "I think... I think I am going to be sick," I wheezed.

"Don't puke on the floor," Vanessa said. "Mind your balls."

Mindy knelt down next to me. She poked my balls with her finger. "Aww. Did I break them?"

Vanessa looked down at me with a critical eye. She shook her head.

"That was okay for a beginner," she said to Mindy. "But your technique is sloppy. You used your toes. That is dangerous. You could break a toe. You need to use your instep."

Mindy looked at her own foot. "Really? I just wanted to hit him hard."

"You have to snap your hips," Vanessa said. "It is not just about the leg. It is about the torque. Watch closely."

Vanessa reached down and grabbed a handful of my hair. She hauled me up to my feet. I was wobbly and weak. My balls were throbbing with a dull, sick heat. I tried to cover my crotch with my hands.

"Hands down," Vanessa barked. "You do not get to protect yourself. This is a lesson for both of you."

I dropped my hands to my sides. I stood there trembling. My huge dick was soft now, hanging limp and heavy against my thigh. It looked pathetic.

"Spread your legs," Vanessa ordered.

I shuffled my feet apart. I felt so exposed. My swollen balls hung there like ripe targets.

"Watch my hips," Vanessa told Mindy. "See how I pivot?"

Vanessa stepped back. She took a deep breath. Then she moved. It was so fast I barely saw it. She pivoted on her left foot. Her right leg snapped up in a perfect arc. The top of her foot, the hard instep, smashed directly into my testicles.

The impact was devastating. It was a heavy, wet thud that echoed through the kitchen.

My eyes bulged out of my head. All the air left my lungs in a silent scream. The pain was blinding. It was a thousand times worse than Mindy's kick. It felt like she had shattered my pelvis.

My legs turned to jelly. I collapsed. I hit the floor hard on my knees. Then I pitched forward onto my face. I was dry heaving. My stomach muscles clenched violently.

"See?" Vanessa said, standing over me. "That is how you kick a man."

Mindy was clapping her hands. Her massive tits were bouncing with excitement. "That was awesome! He folded up like a lawn chair."

"Technique is everything," Vanessa said. She nudged my side with her foot. "Are you still with us, Jake?"

I couldn't speak. I was making a high-pitched wheezing sound. I was curled in a tight ball, clutching my ruined balls. The pain was radiating up into my stomach and down my legs. I felt like I was going to pass out again.

"He looks like he is going to puke," Mindy observed. She sounded delighted.

"He might," Vanessa said. "That is a sign of a good kick. You want to hit them so hard they feel it in their throat."

I gagged. My body convulsed. I was on the verge of vomiting right there on the kitchen floor. My balls felt like they had been crushed into jelly.

"Can I try again?" Mindy asked. "Now that I know the trick?"

"Sure," Vanessa said. "Let me help you."

I was dry heaving on the cold tile floor. My balls felt like they were on fire. I thought the punishment was over. I was wrong.

"Get up, Jake," Vanessa said. She nudged me with her foot again.

I groaned. "I can't. Please. I am done."

"You aren't done until I say you are done," Vanessa said sharply. "On your knees. Now."

I slowly pushed myself up. My arms were shaking. I managed to get to my knees. I was panting. My head hung low. I just wanted the pain to stop.

Vanessa walked around behind me. She grabbed my shoulders and pulled me back. I leaned against her. The back of my head pressed right into her chest. She pushed me forward until my head was nestled between her massive, soft tits. She wrapped her arms around my chest and held me tight.

I was trapped. I could not move my upper body. My head was engulfed in her warm cleavage. My crotch was thrust out, completely defenseless. My swollen balls hung there like a punching bag.

"Perfect," Vanessa said. Her voice vibrated through her chest against my skull. "Now he can't curl up. You have a clear shot."

Mindy stepped in front of me. She was grinning from ear to ear. She looked down at my exposed groin.

"This is going to be so much fun," she said. "Thanks for the help, sis."

"Just remember what I told you," Vanessa said. "Pivot your hips. Use your instep. Drive through the target."

Mindy nodded. She focused on my balls. She took a step back to give herself room. I tried to struggle but the pain in my balls made me too weak. She held me in place.

"Please, Mindy," I begged. "Don't do this. I will never look at you again."

"I don't mind if you do," Mindy said. "Because it will mean I get to do THIS."

She wound up. She shifted her weight. Her eyes were locked on my testicles. Then she exploded into motion. She pivoted on her left foot and snapped her right leg up. Her instep connected perfectly with the center of my sack.

\*CRACK.\*

The sound was sickening. The impact lifted me up off my knees, but Vanessa held me down. The pain was instantaneous and blinding. It was a white hot spear that drove right up into my stomach.

My body went rigid. My toes curled. My hands clawed at Vanessa's arms.

Mindy didn't stop. She pulled her leg back and kicked me again. Right in the same spot.

\*THUD.\*

My eyes rolled back in my head. I couldn't breathe. My stomach convulsed violently. I couldn't double over to protect myself. I had to take the full force of the agony. It felt like she had kicked my balls into my throat.

"Good job!" Vanessa cheered. "That was excellent form. Do it one more time."

"Please," I gasped. "I am going to be sick."

"Hold it in, Jake," Vanessa said. She squeezed me tighter.

Mindy laughed. She took a deep breath. She lined up her third kick. "Bye bye, Jake."

She swung her leg with everything she had. Her foot smashed into my bruised, swollen testicles with terrifying force.

\*CRUNCH.\*

My body went into spasms. I couldn't hold it back anymore. I opened my mouth to scream and vomit exploded out of me. It sprayed all over the floor and onto Mindy's legs. I passed out instantly, slumping back into Vanessa's soft boobs.