Testicle Research Part 64: Mary's Ball Popping Desires

Table of Contents: https://www.reddit.com/r/BallbustingStories/s/YrB61EpUwP

*All Characters aged 18+*

**Caity**

Caity, the blonde beauty, dressed in a pink dress that was tight on the top half of her body showing off her cleavage, and loose over her legs, ending just above her knees, knocked on the door to Lucy's office.

"*Come* in," she heard Lucy say from inside. Caity noted her emphasis on the word "come" and wondered what that was about.

When Caity entered, she was surprised by what she saw.

Lucy was sitting on the other side of the desk, facing the door, dressed in her labcoat and nothing else. Said labcoat was unbuttoned and open, but only enough to show a little bit of the inside of her boobs. No nips.

Caity couldn't help but be aroused at the sight of an almost nude hot woman.

"How can I.... mmmmmmm... help you, dear?" Lucy moaned.

Caity wondered why she was moaning. Both of her hands were on her desk, so she wasn't masturbating. *Maybe she's got a vibrator inside her.*

Caity had noticed that ever since her son's accident, Lucy had become a lot more open about her sexuality. Not that she was complaining. The testicular research facility was all about women's sexual empowerment and it was only right that the founder got her fair share of that too.

Caity moved to address why she was here. "I need to ask you a favour about Mary."

"Mary?" Lucy raised her eyebrows in confusion. "She's such a nice girl. Although I'm sure her subjects would disagree. I've read the reports on her experiments and damn that girl is... creative. But we don't concern ourselves with male opinions here. This place is all about female empowerment."

Caity nodded her head. "Damn right it is. We're all so thankful that you've given us this place to be ourselves without judgement."

"So, what did you want to ask about Mary, then?" Lucy asked. "I hope you two aren't having trouble in your relationship."

"Oh no, nothing like that," Caity waved her hand and laughed. "We're doing great. Especially in the bedroom, if you know what I mean." She winked.

"I'm so glad to hear that," Lucy moaned again in pleasure as she grinded her hips below her desk. Caity thought she heard a male voice coming from underneath the desk. "I want you girls to be sexually liberated," Lucy continued. "It warms my heart that you and Mary have such an active and satisfying sex life."

"Me too, and... well... that's kinda what I need help with. I have an... idea."

"Oh?" Lucy cooed, as she bit her lip in pleasure.

"You see," said Caity, "me and Mary have a dynamic. I'm the domme, she's the sub."

"Oh, it's weird to think of Mary as a sub with what she does to the boys in her lab," Lucy laughed.

Caity laughed too. "I know. She's really mean to men, but with a woman like me she is such a sub. And she is so cute when I make her tremble."

The two women laughed.

Caity continued. "And I need your help to make her tremble by putting her to the test."

"How so?" Lucy asked.

"Well, let's be frank here. You know damn well that Mary gets incredibly horny about destroying testicles."

Lucy gasped. "Caity! Are you implying that Mary's research into destroying the testicles of young virgins in various ways is illegitimate and motivated entirely by her own sexual desires and not for scientific purposes at all?"

"I am," Caity said confidently. "Is that a problem?"

"What a silly question," Lucy responded with a knowing smirk. "You know this facility is about women's freedom as much as it is about testicular research. She's free to do whatever she wants to the testicles that end up in her lab. Now, back to the matter at hand."

"So anyway," Caity continued with a grin, "I wanna mess with her a little. I wanna tease her with a huge pair of balls that she'll just NEED to pop but isn't allowed to. That will really make her squirm."

"Oh Caity, that's very cruel of you to tease a girl like that," said Lucy.

"Oh don't worry," said Caity. "She'll squirm, but she loves it really. She loves it when I control her."

"So why do you need my help?" Lucy asked.

"Well, the subject you've got in your lab at the moment. What's his name?"

"Colin."

"That's it. Colin. How long has it been since he's had an orgasm now?"

"It's been a week now. And me, Sally and Cindy have had a lot of fun teasing and edging him in that time. I haven't quite figured out another teasing experiment to do with him yet so I've just been having some fun with him inbetween my testicle crushing experiments. Why you ask?"

Caity chuckled. "Well, after a week without cumming and near constant sexual teasing, I'll bet his balls have got quite large."

"Oh yes, there is quite a large buildup of cum trapped inside those balls of his," Lucy moaned in pleasure. "Not as large as the boy beneath my desk though."

"Huh?" Caity raised her eyebrow.

Lucy smirked, as she spoke down to the guy with his head between her legs under the desk. "Lick faster, boy. I want another orgasm."

The man underneath evidently sped up, as Lucy's body reacted. "Mmmmmm, yeah. Mmmmm, this boy under me? His name is Jake. He hasn't cum in THREE weeks. And his balls are oh so full. But his cock is flaccid. I gave him a serum that makes him unable to get hard. But he still has that desire. All that NEED!" She gasped in pleasure. "That sexual need for an orgasm. That biological need to empty his testicles. But he can't. Not when he can't get hard. Not when he can't orgasm."

"Wow, that is cruel," Caity admired.

"Oh I KNOOOOOOOOOOOWWWWWWW!" Lucy screamed as she orgasmed on her limp dicked denial slave under the desk. Getting off on his sexual suffering. Getting off on her own cruelty.

When she recovered, she allowed him to remove himself from her desk but quickly orderer him to stand to attention so Caity could look at his genitals.

Caity lifted his flaccid cock, making him whimper, to look at his incredibly full balls. They were HUGE! Far bigger than any pair of balls she had popped. And she had popped a LOT of balls.

"Fun, huh?" Lucy said.

"I suppose," said Caity. "But wouldn't it be better if you made it impossible for him to cum but still able to get hard? I bet you'd love to ride a permanently denied cock."

"Oh that's the dream," said Lucy. "And my goal. I'm working on something to that end. It would be much hotter," said Lucy as she stood up and walked beside Caity. "And then, once I have that... I guess you could call... Orgasm Vaccine... I'll have no more use for Jakey here."

He looked at Lucy with hope, and spoke up. "You'll... you'll give me the antidote then? Before you let me go?"

"Of course," said Lucy.

Jake exhaled with hope, closing his eyes at the thought of finally being able to get hard and cum again.

Whilst his eyes were closed, Lucy leaned into Caity's ear and whispered, "there is no cure. I lied to him. He's never cumming again."

Caity chuckled.

"Anyway," said Lucy as she pulled away, "would you prefer to play with Jake's balls instead? They're much bigger, so it will be more difficult for Mary to resist popping them."

"Thanks but I'll stick with Colin," said Caity. "A week's build up of cum is enough for my purposes. And besides, I'd like to play with a hard cock instead of a useless flaccid one."

Jake was visibly hurt by her words.

"Very well," said Lucy. "Colin it is then. Shall we go and get Mary now?"

"Can I give his balls a good kick first?" Caity asked nonchalantly.

"Sure," Lucy responded casually without any hesitation.

"What?" Jake said, alarmed.

But Caity was already bringing her foot back ready for a kick.

"NO! WAIT!"

KICK!

Caity kicked him right in his overfilled balls, making him crumble to the ground instantly in the fetal position. He couldn't scream, the pain was so bad. He just let out a high pitched whine. "Why?"

Caity didn't answer.

"Nice kick," Lucy commented.

"Thanks," said Caity with pride.

■■■

They heard the sound of male screams all the way from the other side of the hallway, accompanied by the sounds of Mary moaning in pleasure.

"YES! YES! YES! OH FUCK!" They heard Mary moan from the other side of the door as they approached her lab.

Lucy chuckled. "Sounds like Mary is conducting some very intense research."

"As always," Caity laughed in response. Such sounds were extremely common in the hallway of the Testicular Research Facility. Especially since Mary had gotten her own lab.

Caity knocked on the door.

"Come innnnn," Mary moaned from the other side.

Caity opened the door to find a naked young man restrained to the frame on the wall. Between his open legs was a huge seethrough glass jug of water positioned on top of a wire mesh gauze placed on a tripod. Beneath the gauze, and, thus, the jug of water, was a bunsen burner on the blue flame setting. The hottest setting.

The man's testicles had been cut out of his scrotum, as Mary was ever so fond of doing, and had been placed down in the jug of water whilst still attached to his body via the cords.

The water was boiling violently, and inside that jug of water was his naked testicles. Caity could see why the man was screaming, but she couldn't understand. After all, she was blessed to be female.

But Caity's eyes were immediately drawn to her hot as fuck girlfriend in front of him. Mary was totally naked and grinding hard against her sybian stool. Caity watched her hip movements, her medium sized breasts bounce, her abdominal muscles clench, as she felt an orgasm consume her body.

"MMMMMM! FFFFFFUUUUUCCCCCCKKKKK! YYYYEEEEEESSSSSS!" Mary screamed as she orgasmed.

There was no denying Mary's hotness, and Caity loved watching Mary dominate men in her lab, but she also loved dominating her in the bedroom. *Who would have thought that such an extreme testicle sadist could be such a sub in the bedroom,* Caity thought to herself as she felt her pussy moisen at the sight of her crazy hot girlfriend.

When Mary had calmed down from her orgasm, she looked towards her and Lucy. "Oh, sorry about that. Just... " she glanced at the man's exposed balls boiling in the jug, ignoring his screams for mercy, "horny."

*There it is,* Caity smirked. *That blush. That hint of shyness and embarrassment at what gets her off that appears at the surface of her sadism every so often.* Caity loved that blush. It was so... cute.

"No need to apologise, dear," said Lucy as she quickly turned her attention to Mary's subject. "This looks fascinating. How long have these testicles been boiling for?"

"About 30 minutes," Mary responded.

Lucy approached him. He looked into her eyes. "PLEEEEEAAASSSEEE! HELP! HELP MEEEEEEEEEEE!!! IT FUCKING BUURRRRNNNNSSSS!"

But Lucy completely ignored him. She was fully focussed on his testicles. "I'd be very fascinated to see what happens to a pair of testicles if left to boil for an extended period of time."

"I'm hoping they explode," said Mary. "That would be so fucking hot," she grinned as she began grinding her pussy against the sybian again.

Caity noted her excitement. "Oh no you don't. Get up, missy."

"Huh?" Mary said, as she looked at Caity.

"You heard me," Caity responded playfully. "Get up, you naughty girl. Do as I say."

Then she grabbed Mary by her arms and pulled her off the sybian. Mary humped the air desperately and instinctively as she was pulled away. "No! I was building to an orgasm!" Mary whined petulantly.


"You just had one" Caity laughed.

"But I want another one," Mary whined.

"Mary," Caity smirked as she leaned into her ear, "be grateful you can have orgasms at all. Just think of all the boys who will never orgasm again because of you."

"MMMMMMMMMMMM!" Mary moaned as she humped the air more desperately, unable even to rub herself as Caity was still holding her arms. "That just makes me need to cum MORE!"

Caity laughed evilly. "I know, you naughty girl. But you can't cum again yet. Not until I say you can. Now, follow me. We're going to Lucy's lab. I have a fun little test for you."

"Hmph. Fine," said Mary petulantly as her arms were released. She resisted the urge to rub her pussy and instead reached for her lab coat, not wanting to act against Caity's demands.

"Nope," Caity commanded, making Mary stop in her tracks. "You're staying naked."

"But... what if someone sees me?" Mary asked.

Caity laughed. "You're naked all the time in this room and you let people walk in. Hell, you just let us in and orgasmed as soon as we walked through the door."

"That's different. Here I'm..."

"In control? Well, not outside of this room you're not. Outside, you're my naughty girl who needs to be told what to do. Now let's go. Keep your clothes where they are."

Mary blushed, but followed Caity's demands and walked out the door, leaving her subject screaming in agony with his balls still boiling. Caity smirked at the sight of Mary blushing. *She loves this power play and she knows it.*

As Mary left the room, Caity looked to Lucy. "You coming?"

Lucy was still admiring Mary's experiment setup. "I think I'll stay here and assess what happens. You don't mind, do you Mary?"

Mary, now nude in the hallway and feeling very exposed responded. "Sure. I wasn't taking notes anyway. And if his balls do pop when I'm not here I can always do it again to the next virgin boy that enters my lab."

"Thanks, dear. You two have fun."

"Oh we will," Caity grinned as she walked into the hallway beside Mary and shut the door behind her.

The screaming of the man inside was barely muffled at all.

■■■

Caity walked behind the nude Mary as they walked down the hallway to Lucy's lab.

Mary was covering her breasts with her right arm and covering her still dripping pussy with her left hand.

"You better not be rubbing yourself," Caity smirked.

"I'm not," Mary blushed.

"And let them free," said Caity as she pulled Mary's arm away, exposing her breasts. They were on the smaller side, but not extremely small. She'd say they were closer to medium sized. And her nipples were still hard. She was loving the humiliation.

"Caity," Mary said with her embarrassed blush, "why are you doing this?"

"Don't pretend you don't love it."

Mary blushed even harder. She couldn't respond. She was right.

Just then, Nurse Rosa came around the corner wheeling a fresh eunuch from Nicole's surgery room to the recovery ward. "Oooooo, look at what we have here, Eunuch." Rosa teased the sobbing ex-man. "An exciting show to feast your eyes on. If only you could still enjoy it."

The fresh eunuch looked at Mary's gorgeous naked body with despair, knowing full well that without his testicles he'd never get to orgasm at such a sight again. Caity felt a wave of arousal at his look of despair. *That's right, eunuch. Take a long look at what you'll never have. This baddie is all mine.*

"Oh, Rosa... um..." Mary gasped as Rosa looked at her.

"Don't be shy," said Rosa. "You're hot, babe. And I LOVE your tits." She pinched Mary's still hard left nipple.

"Eek," Mary let out a light shriek of excitement.

"Ooooo, someone's excited. Just coming back from a testy torture sesh?"

"Yes," Mary blushed.

"Aww, she's shy," Rosa smiled as she turned to Caity. "I've never seen this side of her before."

"Oh, I have," Caity smirked as she slapped Mary's pert butt.

"Eep," Mary whined again as the other two girls giggled.

Meanwhile, the fresh eunuch looked on in despair at the sight of open and free female sexuality before him. As if they were mocking him for the complete eradication of his sexuality. But they weren't. Not intentionally. They were talking to each other like he wasn't even there. His life long sexless suffering ahead of him meant nothing to them. They were too busy enjoying their sexual freedom.

"Anyway, excuse us, Rosa," said Caity. "We've got business to attend to."

"Of course. See you later," Rosa said gleefully as she continued to wheel the eunuch to the recovery ward as his sobbing intensified. She giggled at his sobbing. "Aww, what's the matter? Did my friend's hot, sexy, naked body make you wish you still had balls?" She giggled. "Oh, you fresh eunuchs are just so CUTE when you cry."

Caity slapped Mary's ass again. "Keep walking. To Lucy's lab."

Mary obeyed.

■■■

**Mary**

As Mary was pushed into Caity's lab, she was overwhelmed with arousal at what she saw.

The poor boy tied to the frame was dripping precum from his cock as a small vibrator was attached to it and vibrating his dick. He was thrusting his hips in the air in a desperate attempt to cum. But what really got the juices flowing to Mary's loins were his balls.

They were absolutely massive.

"HELP! PLEASE! I NEED TO CUM!" He wailed desperately at seeing 2 women he hadn't seen before. Hoping that they would grant mercy upon him.

Caity saw her eyes glow up. "Impressive, aren't they? Lucy's had him tease tortured for a full week without orgasm. That's what's made his balls so big. They are packed full of cum from the constant teasing without orgasm."

Mary eyed the huge balls and took in everything Caity said, but only one thing was on her mind. How sexually satisfying it would be to pop those massive balls in her hands. "Caity, I need to pop them!" She said, almost drooling at the sight of them.

"Tough. You don't get to?"

"What?" Mary asked with dismay.

"You're not allowed to pop them or destroy them in any way. His balls need to remain intact."

"No. Caity, no!" Mary whined. "You can't put a pair of testicles THAT big in front of me and NOT let me destroy them. That's not fair!"

"These balls don't belong to you. They belong to Lucy," Caity explained, "and she needs his balls intact for her *research.*"

"Well why did you bring me here then?" Mary kept whining. "You know how much I love destroying balls. Showing me a pair I can't destroy is just cruel. Extemely cruel."

Caity laughed. "Babe, I don't think you of all people can criticise a girl for being cruel. Not with what you do in your lab."

"That's different," Mary insisted. "Castrating virgins by slowly destroying their testicles in extremely painful ways is one thing. But not letting me destroy a pair of testicles is so much crueler. I NEED to destroy balls, Caity! Depriving me of that is just outright sadism."

"Girl," Caity laughed again, "YOU are a sadist."

"No. I'm a TESTICLE sadist. It's totally different. Testicle sadism, and depriving virgins of sexual pleasure forever by castrating them is 100% morally permissable. How could it not be when it brings me so much pleasure? But depriving a girl of her sexual needs is inexcusable. It's morally unjustifiable."

"I thought you studied Biology at uni. Not radical feminist philosophy."

"I'm being serious."

"I know. It's funny," said Caity as she squeezed Mary's breasts and kissed her on the mouth, shutting Mary up.

Mary's body shuddered in arousal in response to her touch, her mouth, the feeling of her lover against her.

Caity pulled away. "This is a lesson. I'm gonna show you that we can have fun with a guy without turning him into a eunuch."

"But taking away their sexual pleasure forever is the hottest part," Mary protested.

"Just watch me," Caity responded as she stepped away and began taking off her dress. Then her bra. Then her panties.

Mary's pussy moisened even further at the sight of her hot as fuck girlfriend completely naked. Her large breasts, her slim figure, her toned stomach. She was so lucky to have such a sexy woman as her partner.

Caity walked to the boy whose cock was being tease tortured. He eyed her up and down, captivated by the sight of her naked body. His own body reacted. His cock twitched more intensely and he humped the air with heightened desperation.

"Colin, right?"

"Yes..." he croaked.

"I'm Caity, and this is my girlfriend Mary."

"Cum! Please! I need to cum," he begged. "Let me cum. Please! Save me!"

"Let's not get ahead of ourselves," said Caity as she switched off the vibrator on his cock and yanked it off.

Colin moaned, not sure if he was relieved or tortured by it's removal.

"I have a deal for you," said Caity. "You let me have my fun with you and do everything I say. In return, when I'm done with you today, I'll let you cum."

His cock wagged like a dog's tail. "Really? You mean it?"

"Yep," Caity grinned. "I promise I'll let you cum."

"Oh thank you. Thank you," he almost started crying.

"But first, let's have some fun." She slapped his balls gently, making him tremble in pain. The light slap was worse than it should have been due to the fullness of his balls.

Mary looked on. "Can I join in?"

"Not yet," said Caity firmly.

Mary stepped back and looked on, frustrated that she was denied the pleasure of hurting a pair of testicles.

But Caity had something different in mind. She took hold of his twitching cock and began to stroke it, making him tremble. "Feels good, huh?"

"Yes, oh God yes please don't stop!"

She kept stroking until he very quickly reached the edge of orgasm. Then she let go with a smirk on her face.

"Noooooo," he whined as his cock jerked desperately in search for the final touch it craved for a much needed orgasm.

Caity just chuckled as she took the frame and turned it upside down so his head was positioned in front of her pussy and his genitals were in front of her face. "Lick me to a few orgasms. Then maybe I'll let you have one."

He started licking her pussy immediately, making her moan. She decided to leave his cock untouched for now. Instead she just savoured the feelings in her pussy until her first orgasm hit her.

After her first orgasm passed, she took the tip of his cock in her mouth and gave it one almighty suck as she swirled her tongue around his cockhead, savouring the taste of his leaking precum.

As to be expected from a man as backed up as he was, he reached the edge of orgasm again instantly as Caity quickly removed her mouth, making him moan in desperation.

"You want more? Keep licking. Give me another orgasm."

He got to work immediately, with the kind of desperation only an orgasm denied man has.

When Caity reached her second orgasm, she lightly trailed her finger down the underside of his cock to keep him motivated as the pleasure rippled from her pussy and up through the rest of her body.

When her orgasm subsided, she took his cock in her mouth once again. But this time she took the whole thing down to the base inside. She didn't even need to make use of her tongue this time. He reached the edge of orgasm instantly. She promptly released his cock from her mouth before he could go over the edge and actually cum though, leaving it quivering, leaking, and straining for the final touch it needed.

"NOOOOOOO!" He wailed. "PLEASE! DON'T STOP PLEASE! OH GOD, IT HURTS. I FUCKING NEED IT! I'M BEGGING YOU! PLEASE!"

"Nope," Caity giggled. "You can give me another orgasm though if you like."

"NO! NOT UNTIL YOU GIVE ME ONE!" he snapped back.

"You're in no position to negotiate. The only way you're gonna have an orgasm is if you give me as much orgasms as I want. Now," she shoved her pussy in his face, "get to work!"

He whimpered in frustration and defeat as he realised that he truly was powerless and at the complete mercy of the women here. And all the women at this facility seemed to be completely merciless. Then, he got to work.

It was only after her 5th orgasm that she stopped playing with his cock, leaving it edged and desperate as usual.

"Please..." he sobbed feebly.

Caity ignored him as she stepped away and looked at Mary. "Your turn. But remember, don't let him cum. And, most importantly, don't pop his balls."

Mary looked at his huge, bloated and bulging balls. "I... I can't, Caity. I need to pop them."

"No you don't. Be as rough as you want, but no popping."

"Can I at least cut them out of the sack so they're all exposed and even more sensitive?" She asked with a bratty whine.

Colin's eyes lit up in terror upon hearing that. Mary noticed, and it had her soaking.

"No," Caity said teasingly.

"But Caity, you know how much I love exposing them!"

"Too risky. What if you slip and cut his balls off? Lucy wouldn't appreciate that one bit. You don't want to upset Lucy, do you?"

"Of course not. It's just... not as fun when they're inside the pouch."

"I know you're an extreme type of testi torture girly, but this is still fun. Besides, he can eat you out as you play with him. Just think of all the virgins who'll never cum again as he pleasures you."

Mary felt the familiar flush of arousal engulf her body at the thought, starting from her pussy, travelling up her stomach and beyond. "Oh, you really know how to get me going."

"I know," said Caity as she grabbed Mary by the ass, pushed her towards Colin and gave her butt a slap, making her yelp excitedly.

As Mary approached the terrified and desperate male strapped to the upside down frame, she traced her fingers down his cock, making him tremble.

"Please! More! I need more!" He whimpered.

Mary let go of his cock immediately. "No. Why would I? Your cock means nothing to me. But your balls," she grabbed his balls, one in each hand, "are very fun to play with. And I'm gonna have a lot of fun with them."

He trembled in fear.

Then she squeezed.

"AAAAARRRRRGGGGGHHHH-MMMMMMMMPPPP!" His screaming was cut off as she shoved her pussy onto his face.

His screams were enough to give her immense pleasure, but it wasn't enough. Not without him licking. And not without popping his balls.

"LICK ME UNTIL I CUM!" She demanded. "And maybe I'll go easier on your balls."

"Don't you dare," said Caity. "You can lick her, but if you make her cum before I say so, your orgasm is cancelled."

"What?" Said Mary. "Caity? Are you... making him edge ME?"

"I am, and there's nothing you can do about it."

"Oh we'll see about that," Mary argued back. "Listen to me, Colin. If you don't lick me to my satisfaction, I'm gonna put your balls through absolute hell."

Caity interjected. "And if you DO lick her to her satisfaction, you won't get to finally orgasm."

Poor Colin was between a rock and a hard place. He didn't know what to do...

Until Mary started squeezing his balls.

He started licking her frantically as he whimpered into her pussy with extreme sexual desperation.

She felt herself getting closer to orgasm already.

Until Caity started stroking his cock. "If you want to cum, you better start licking slower."

"No! Speed UP!" Mary sunk her thumbs deeper into his nutmeat, distorting the extremely delicate organs in ways they were never meant to be.

Colin was so confused by the contrasting pleasure in his dick and pain in his balls that he did neither. He just stopped licking entirely, trying to think what to do.

Which neither girl was happy with.

"Keep licking, just slower," said Caity as she rubbed the head of his cock with her thumb, using the copious amount of precum as lube, edging him intensely.

"Keep licking as fast as you can!" Mary demanded as she began giving his balls a brutal massage by rubbing her thumbs around his balls whilst keeping them pushed deeply in.

He started licking again, but slow. He needed to cum. He'd just have to grin and bear the pain until Caity made him cum.

"Mmmmppph!" Mary whined in frustration. "Not fast enough."

She let go of his balls, much to his relief...

Only for her to abruptly bite down on both of his balls with her sharp teeth.

He screamed uncontrollably into her pussy as the shape of his nuts were distorted by her merciless mouth.

"STTTTTOOOOOOPPPPPPP!" He shrieked into her pussy.

The vibrations and the increased franticness of his licking brought her closer to orgasm. *Ohhhhh, yes! Here it comes. Almost there.*

"You wanna cum, boy? Well you better not make her cum!" Caity said as she took his cock in her mouth once again, sucking it with all her might.

The poor boy was hyperventilating. His genitals were overwhelmed with confusion, but he managed to slow down his licking. He needed to cum so bad. He had to endure the pain Mary was inflicting. He hadn't cum for a week under constant tease torture. He needed an orgasm more than anything. He had to hold on.

Mary began grinding her teeth, distorting the male organs even further, worsening the already extreme agony.

He began licking more intensely yet again.

Caity released his cock from her mouth and instead yelled at him. "Stop licking her now or I'll tell Lucy to make sure you never cum again."

After all Lucy had done to him, he thought that was Lucy's intention anyway, but with the unbearable pain in his balls he wasn't thinking straight. He stopped licking.

"Hey!" Mary let out a muffled growl, her balls still in the cruel grip of her grinding teeth. "I want to cum!" She began pulling her head back. Yanking his balls without mercy as she continued to grind her teeth. She was like a feral dog.

He shrieked inhumanly. He begged. His entire body quivered as the pain became overwhelming.

But he endured.

He needed to cum.

And even the worst ball pain was worth it to cum.

He saw no other chance to cum in sight.

He needed to cum with every fibre of his being.

Mary spent a good 5 minutes chewing and yanking on his oh so sensitive testicles, frustrated at being denied the pleasure she wanted, the pleasure she deserved, until she gave up. She released his balls from her mouth and stepped away.

He whimpered in agony as his balls regained their shape, only for Mary to give them an almighty punch.

"AAAAAARRRRGHHHHHHHHH!" He shrieked.

"That's what you get for not making me cum." She turned to Caity. "Why did you do that? Have him tease and edge me?"

"Because," Caity grinned as she approached her, "I wanted to see you squirm. You love it. Don't deny it."

Mary blushed.

"And besides," Caity said as as began rubbing Mary's pussy herself, making her moan. "Today your pussy belongs to me. Only I get to make you cum."

"Oh... Caity..." Mary moaned as Caity's finger fiddled with her clit.

It wasn't long before the two sadistic lovers were having sex on the floor right in front of the denied and desperate Colin.

He watched them both cum multiple times over the course of 30 minutes as his cock twitched desperately, untouched. Their beautiful cumming bodies further taunting him with what he needed.

By the end, Mary was fully satisfied.

As Mary was recovering from their awesome sex session, Caity approached the frame Colin was restrained to and manoeuvred it so he was upright again. "Enjoy the show?" She asked.

"Can I cum now? Please!" He begged.

Caity grinned. "Yes. You can cum now."

He sobbed tears of joy. "Oh thank you! Thank you! I need it so bad!"

Caity just looked at him, not touching him at all. His raging erection went untouched.

He waited

And waited

And waited.

"Well," said Caity, "go on then. Cum. I said you can."

"I... I can't. I need you to..." he gestured his head towards his desperately twitching and leaking cock.

"Oh, no way. I said I'd *let* you cum. I didn't say I'd *make* you cum. You're gonna have to do it yourself, bud."

"But... I'm restrained. I can't move my hands. I can't touch myself."

"I guess you can't, huh. Not unless I release your restraints."

"Can... can you?"

"Nah," Caity said casually.

"But... but... I did what you asked," he trembled.

"I know," Caity smirked.

"But... she bit my balls. She fucking tortured my balls. I've earned it. I've fucking EARNED IT! PLEASE!" He sobbed.

Caity just chuckled as she walked away and put her clothes back on, turning to Mary. "No hard feelings, right?"

Mary blushed. "It was mean of you to deny me for so long."

"I let you cum eventually. Multiple times. I'm not so cruel as to deny a girl her orgasms entirely. Just wanna keep you squirming sometimes."

Mary just blushed.

"Anyway, I'd say you passed your test. Well done for not popping his balls. I'm impressed," Caity admired.

"Thanks," said Mary, as she sat up, still nude and sitting on the floor. "I'm still craving a good pop though. Can I go to the recovery ward and pop a few balls to get it out of my system?"

Caity smiled. "Oh, go on then."

"Yay!" Mary bounced up and made her way to the door.

"You not heading back to your lab to get your clothes first?"

"Nah. I want those poor patient's to see exactly what they'll be missing when I'm done with them." Mary said with a newfound confidence at having her hot body on display publically.

"Fair enough. Have fun."

"You know I will. I always do when I'm popping balls," she said as she went to leave.

"I'll come with you. Just wait a sec," said Caity as she picked up the vibrator and reattached it to Colin's cock.

"No! At least give me a break. Please!" He begged.

She ignored his begging and just turned it on, sending his cock trembling. He reached the edge of orgasm quickly but just couldn't go over. He was just stuck at the constant edge. Lucy had designed the vibrator this way.

"Oh God! Fuck! TURN IT OFF! PLEEEEAAASSSEEE! I NEED TO CUM! LET ME CUM!"

Caity turned to Mary. "Ok. Now we can go."