Forbidden Fruits

Forbidden Fruits, by lb404©

DISCLAIMER: All characters in this story are 18+ years of age. All characters and events depicted are completely fictitious.

*****

The dainty foot with the pink nail polish slowly traced its way up Mark's right leg. It paused momentarily at his knee, before proceeding gently up his bare thigh. The little foot found easy access to Mark's baggy gym shorts as it continued on its journey, stopping only once to massage Mark's inner thigh. With a little trial and error, the foot breached Mark's boxer shorts. Having reached its target, the foot began to rub itself against Mark's large package, the big toe of the offending foot occasionally flicking the bulbous head of Mark's penis.

Across the table from Mark, the blonde-haired girl with the piercing blue eyes and faint freckles smiled and winked. Mark could feel his thick cock growing. Flustered and frustrated, Mark's face began to turn red. If this were any other girl...but it wasn't any other girl...this was his step-sister.

Mark made an exaggerated stretch with his arms, standing halfway up from his chair. The intruding foot fell free of his shorts, and he sat back down. The cute blonde across the table made a pouty face. For the moment, Mark was free of the incestuous foot.

Sitting to the right of Mark, his mother kept right on talking about her book club, oblivious to the drama occurring beneath the table. Based on the fact she kept talking about the wines they had drank at her last meeting, and hadn't mentioned any book yet, Mark suspected it was more of a wine club, where books were only mentioned in passing.

Before long, the foot returned, caressing Mark's calf. Trying his best to ignore the persistent foot, Mark hurriedly finished his meal.

"Hey mom, mind if I head to my room?" Mark asked, searching for an escape. "I don't want to miss the start of the game." There was no game on that night, but his Mom wouldn't know that.

"Sure honey!" Mom replied. "Just throw your dishes in the sink. The dishwasher is clean."

"Thanks mom!" Mark chirped, and made a hasty retreat.

Once in the safety of his room, Mark threw himself down on his bed and let out a long sigh. It was Mark and his step-sister's second day back from their respective universities and already it was starting. Two days into summer break and already she was after him! To be fair, it's not like part of him didn't want it too...

Mark's phone buzzed, interrupting his brooding. It was a text from his sister.

Jenny (7:49pm): You hurt my feelings at dinner tonight, why you so mean :(

Mark: (7:50pm): I'm your BROTHER. Last summer was fun, but it needs to stop

Jenny: (7:52pm): You're my STEP brother...are you sure you're really a biology major? :P

Jenny: (7:52pm): Besides, that isn't what you told me a month ago ;)

Mark rubbed his forehead in frustration. Drunk and 600 miles away from her, it had seemed like a good idea to send some late night texts. Mark decided to try a different approach.

Mark (7:55pm): Don't you have a boyfriend now?

Jenny (7:57pm): He doesn't need to know...plus I don't see what we do as cheating

Mark sighed, so much for that. What did she even want to happen tonight?!

Mark (7:58pm): Mom's home, it's not like we could even do anything

Jenny (7:58pm): She's gotta make a wine run

Mark (7:58pm): That's only 30 min at most

Jenny (7:59pm): You think you can even handle 30 min? It's been a long time. I bet you're out of shape ;)

Mark groaned, how did it come to this? The two of them had a normal relationship until the end of last summer, normal but shitty. Mark and Jenny met when they were 4 and 2 respectively. Jenny's dad had married Mark's mom. Her dad passed away the next year in a tragic car crash. Looking back on it now, Mark had been a pretty awful older brother. Growing up, all his scrawny, dork of a sister ever wanted to do was hang out with him. Instead, he would shove her, trip her, sit on her, whatever it took to get her to go away, usually to tattle on him to mom.

As they grew older the animosity also grew. In high school, Jenny was always more popular than her older brother. Despite Mark being on the varsity swim team, and a 4.0 student, he couldn't compete with the cute, little blonde girl with the big rack. This irritated him to no end. In their teens, they both resorted to tattling as their primary weapon. 'Mark was drinking last night,' 'Jenny was smoking behind the school,' that sort of thing.

Everything changed one stormy night late last August. It was a week before Jenny was scheduled to move into her freshman dorm. Mark at had been mad at his sister for something, he couldn't even remember what it was now. In order to irritate her, he had snuck into her bedroom and opened her diary. She had burst in on him, catching him in the act. Her face had been bright red with rage. They had taken things too far that night; the whole dynamic of their relationship had changed. That whole next week before Jenny left for school they had been like addicts, sneaking off every chance they had to get their fix. Mark couldn't walked right for almost a week after he got back to campus. Now, nearly a year later, Jenny wanted to pick up where they had left off.

Mark's phone vibrated again, taking him away from his thoughts.

Jenny (8:02pm): Are you scared?

She had asked him the same thing that stormy night in her room. Staring down at his phone, he realized just how much he wanted this. His pulse quickened as he wrote her back. The gears in his mind were already shifting from fighting her to conspiring with her.

Mark (8:03pm): Let's meet in the living room as soon as mom leaves. That way we'll be able to see her car when she gets back.

Jenny (8:03pm): Won't she be able to see us?

Mark (8:04pm): We'll keep the lights off. It's a full moon. We should be able to see ok.

Mark realized he was breathing heavily, practically panting from the excitement.

Jenny (8:04pm): Are you going to make them pretty for me?

It took Mark a moment to figure out what she meant. It was a promise he made in one of his drunken texts from college.

Mark (8:05pm): Yeah, I'll make 'em pretty for you :)

Jenny (8:05pm): :D

Mark hurried to the shower. He didn't know how much time he had. Mom was probably on the treadmill if she was following her standard evening ritual. She would need to leave for the store fairly soon, as they didn't sell alcohol past 9 o'clock in their county.

Being a swimmer, Mark was no novice to shaving his body. He got in the shower, and slathered a generous helping of soap over his meaty cock and balls. He worked it into a lather, and worked his cock into a huge, veiny monster. He always found it was easier to shave that area while erect.

Stepping out of the shower and drying off, he admired his work in the mirror. He had done a pretty good job given the time constraints. His cock was shaved smooth, and there was hardly on hair on the massive eggs dangling between his legs. He ran a hand through his thick black hair, and flexed his abs once in the mirror. He realized just how nervous he was to be naked again in front of his step-sister.

Mark scurried back to his room and sat on his bed, waiting. A thought struck him, and he dug around in his closet a bit. Since he moved out for college, mom was using his bedroom closet as extra storage space. He found mom's gift-wrapping bin and dug out a pink bow. Untying it, he then retied around his fat, hairless nuts as well as could be expected for a 21 year old boy.

Lying back down on his bed, he waited, completely naked except for the pink bow. The minutes ticked by, and with them the butterflies grew in his stomach.

"Jenny...Mark!" Mom shouted from downstairs. Mark jumped, startled, despite that fact he had been waiting for this.

"I'm going to run to the store! Be back soon!" She continued.

"Sounds good!" Mark shouted back. He could hear Jenny yell something similar from her bedroom downstairs, although he couldn't quite make out what she said.

He waited until he heard the front door close, and slowly made his way down the hallway. His cock was hard by the time he reached the staircase, bouncing in front of him with each step. By the time he made it downstairs to the dimly lit living room, his heart was racing. He stood there a moment, alone, waiting, listening. In the moonlight, he could see a strand of precum glisten on the tip of his penis before falling to the carpeted floor below.

He heard soft footsteps approaching. He was so nervous he had to remind himself to breath. From around the corner appeared his 19 year old step-sister. She was naked! He had never seen her completely naked before. Her voluptuous form looked stunning in the moon light. Mark worked his gaze down her body, from her heavy tits, to her cute shaved pussy, to her shapely legs, and finally down to her tiny feet; she was a goddess.

Her hips swayed gracefully as she approached him. He noticed barbells shining from both nipples; those were new! As she neared, he became aware of just how small she was, her head barely reaching above his shoulders. Finally, his eyes rested on her face, and the silly smirk she had on her lips. He realized he was grinning too.

"Cute," she giggled, pointing at his crotch. It took Mark a moment to remember he still had the pink ribbon tied around his big balls. "I've been waiting so long for this," she said, her voice shaking just a little. Trembling with excitement, Mark spread his legs and closed his eyes.

Jenny's tiny foot slammed into Mark's beefy balls with a thunderous clap. Mark squeaked and collapsed to the carpet below. "Oh god," Jenny groaned with pleasure.

Panting, Mark scrambled to his feet, and presented himself again to his little sister. With a sweet little smile and lightning speed, she again buried her foot deep into Mark's bulging nuts. Somehow Mark managed to stay on his feet this time.

"Again," Mark whimpered. "Please kick them again." Only now did he understand just how much he had wanted this, how much he had been craving his little sister's abuse.

Looking him in the eye, Jenny ran her hand across his cheek. "It's been a while...let me know if it gets to be too much." Mark nodded slowly. With that, Jenny rammed her dainty foot once more into Mark's throbbing eggs.

Mark found himself on the floor, gasping for air. He began to rise, but Jenny put her foot on the small of his back. "No, no, stay there," she ordered. "Just raise that cute little butt of yours into the air."

Mark did as ordered, rising to his knees while keeping his head and forearms on the carpet. Looking between his legs, he could see thick strands of precum stretching between his cock and the carpet.

"Scramble them," he moaned "Scramble my poor nuts." He moved his hips side to side, shaking his aching jewels.

Jenny's foot smashed Mark's balls against his abdomen. The foot came again, mashing the meaty orbs. Then it came crashing into them a third, fourth, and fifth time. At this point, Mark's lost count. Sweating and panting, he spread his legs wider so his little sis could have better access to his throbbing testicles. Over and over, the petite little foot ploughed into his exposed manhood. Adrenalin and endorphins now pumping into overdrive, all Mark could do leak precum and moan with pleasure. It felt amazing!

Jenny was sweating too when she finally took a pause from savaging her brother's nuts. "Geez, I can't believe that ribbon's still barely hanging on," she laughed. "I guess I must be out of practice. Be a good boy, stand on your feet, but keep your hands on the carpet. I think one good kick should finish unwrapping this gift."

Mark obeyed, his knees shaking as he got into a tripod. He made sure to spread his legs nice and wide. "Smash them good, sis," he whimpered with delight. "Smash my stupid, fat balls."

Jenny pulled her right leg back. She held it there a moment for dramatic effect, before driving it like a freight train directly into his swollen, red testicles. The pink ribbon fluttered down, followed by Mark coming crashing down on top of it.

Jenny tugged at Mark's shoulder until he rolled over onto his back. She sat on the floor next to him. "How you doing, champ?" She asked.

"Real good," Mark said with a delirious smile on his face.

"Are you happy we did this?" she asked, looking him in the eye. He nodded slowly with an even bigger and stupider grin.

Jenny's looked down at the focus of her abuse. "Mmmm, they're so big and swollen," Jenny moaned with delight. She put her left hand under his massive balls and gently raised them off the carpet. With her right hand, she began playing with the barbell in her right nipple. She started slow at first, but within less than a minute she was violently twisting, pinching, and stretching the pierced nipple.

She raised Mark's nuts as high as his thick scrotum would allow. Looking him dead in the eye, and giving him a sadistic little grin, she let the bloated nuts flop back onto the carpet. Tender as they were, Mark yelped in pain and Jenny's grin widened. Jenny's left hand went to her other nipple and soon she was moaning and biting her bottom lip while tugging savagely on both tits.

"Should we call it?" she asked after a minute or two of heavy titty-manhandling.

"If I wore you out already, I guess I'll let you concede," Mark said with a smirk.

"Come on then, stand your big dumbass up, I'm really going to scramble your eggs good!" Her voice sounded angry, but the huge smile on her face betrayed her sheer excitement at the chance inflict more pain on her brother's nuts. When she hopped to her feet, Mark couldn't help but notice the spot where she had been sitting was soaked. Glancing up quickly, he noticed for the first time just how wet his little sister's pussy had become.

Mark's knees were wobbly, but he managed to get to his feet. "Put your arms around my shoulders," Jenny commanded. "I don't want you falling over until I'm done with you." He did as ordered, her skin felt so warm to the touch. Jenny wrapped her hands around his waist, and started lining up her knee with his throbbing ballsack.

"Smash 'em, smash them as much as you want," Mark whined with excitement. "I just want to make you happy." The realization that torturing his balls had caused his little sister to become so wet made Mark incredibly horny; his cock was so hard that it ached.

"That's so sweet," she said, giving his muscular chest a soft kiss. Then, without any warning, she sent her knee hurtling into his tortured ballbag. Before Mark had finished regaining his breath from the first blow, his sister's knee crashed into his balls a second time. Mark barely had a chance to squeak, before the knee rearranged his ball-meat yet again. Up and down, his little sister's knee worked like a ball-mashing piston. Each time she came in to deliver another blow, Mark's rock-hard cock would rub against her stomach, smearing precum all across her belly.

Jenny paused suddenly. "You're crying," she said with a concerned voice. "We should stop for the night." Mark hadn't even realized it, but she was right. Tears were rolling down his cheeks.

"No please," he begged, looking down to see just how sloppy wet his sister was becoming. Her inner thighs were completely caked in her own juices. "I can take more...really I can."

"Ok, here's the deal tough guy," Jenny said, after a moment of thought. "I'll keep kneeing you, but every time I knee you, you have to say 'thanks little sister.' If you're crying too hard to say it, or you're so spaced out you forget, were done." She paused. "That sound fair?"

"Yes, thanks little sister," Mark responded sheepishly.

"Besides," Jenny said, removing her hands from his waist. "As I see it..." She reached down and took one of his tortured balls in each hand, her slender fingers barely able to reach all the way around the two swollen testicles, "I own these the rest of the summer." She looked him in the eyes and gave little squeeze that made Mark moan in both pain and delight.

She wrapped her hands back around his waist and gave him a little hug, their warm bodies pressed together for just a moment.

Her hard knee collided with Mark's savaged jewels. "Thanks little sister," he groaned.

Another knee flattened his aching nuts against is pelvis. "Thanks little sister," he said, beginning to cry again.

Before he knew it, another knee was mashing his gonads. "Thanks little sister," he whimpered.

After a slight pause, the cruel knee crunched yet again into his soft eggs. "Thanks little sister," he squealed.

There was a longer pause, and he noticed Jenny was trembling slightly as she drove her knee once more into his sexual organs. "Thanks little sister," he moaned, snot starting to run from his nose, and tears dripping off his chin.

Jenny was shaking like a leaf now. Mark was about to say something when she jack-hammered an absolutely devastating knee into his swollen, red ballbag. He tried to thank, he wanted to thank her, but he didn't have the air in his lungs to do it. All that came out of his mouth was a tiny little squeak. He clung desperately to her shoulders just to stay standing.

Jenny dropped her knee and pressed her face against her brother's hard pecs. She was groaning, almost as if she were in pain. Her whole body was trembling. "Are you ok?" Mark whispered with what little breath he could muster, all of a sudden feeling very worried. She took her right hand from around his waist and gave a reassuring thumbs-up, but kept her head buried in her brother's chest.

After close to a minute, she slowly raised her head. Looking her in the eyes, he realized she was near tears. "Are you sure you're..." he began.

"I came," she said, cutting him off. Her voice was shaky. "I just had one of the most intense orgasms of my life...it was... amazing."

"How's that..." Mark started to ask, before a bright light blinded both of them.

"Oh shit!" Jenny exclaimed. "Mom's home!"

Mark just stood there, is mouth hanging open.

"Can you make it to your room on your own?" Jenny asked. Thankfully one of their brains was still functioning. "I'll throw on a robe and deal with mess on the carpet."

Mark nodded and stumbled slowly towards the staircase, his knees weak as jelly, and his brain hopped up on endorphins. His left foot was on the first stair when his sister, now in a robe, snuck up from behind and wrapped her arms around him.

"Thank you," she whispered, and kissed him on the back. He tried to respond, but his brain suddenly seemed totally incapable of forming words. When he turned around, she was already in the living room with a roll of paper towels.

With a lot of help from the railing, Mark somehow managed his way up the stairs. Shambling down the hall, he finally made it to the safety of his room. Not thinking, he collapsed headlong into his bed, and directly on top of badly beaten nuts. He practically shrieked, and quickly rolled over onto his back, gasping for air. Moaning, he gently massaged his aching testicles. His hands gradually shifted from tending to his battered nuts to playing with his still very large, and very hard, cock.

In a daze, he thought back to that night, almost a year, when his sister had caught him with her diary. He remembered how, in her rage, she punted square in the nuts. When he had finally gotten up from the ground, her face was still flush, but she didn't look angry. Instead, she had asked him in a trembling voice if she could do it again. A few more kicks and she had asked him if he would take off his shorts. When he had hesitated, he remembered how she looked him directly in the eye and asked, "are you scared?" He was, but he took them off anyways, and their relationship was never the same.

In his stupor, Mark was vaguely aware of a buzzing noise. Pulling his hand away from his cock, it took him a minute find his cell phone on the nightstand, and three tries to unlock it.

Jenny (9:25pm): Hey :)

Jenny (9:30pm): ...you alright?

Mark (9:32pm): Yeah...just a little spacey

Jenny (9:32pm): I should hope so, I would be offended if you weren't :P

Jenny (9:33pm): Tonight was AMAZING, but I hope I didn't overdo it. You sure you're ok?

Mark gazed down at his bloated nuts. They looked like they belonged somewhere in a produce aisle.

Mark (9:35pm): Swollen, really swollen, but I'll be fine...I had a lot of fun too! :)

Jenny (9:36pm): Believe me, as the one who cleaned up the carpet, I know ;)

Mark (9:36pm) Lol, yea... I still can't believe you came!

Jenny (9:37pm) I know, right!! I knew it was possible for some people to cum with no physical contact, I had no idea I was one of those people! :O

Jenny (9:38pm): Is there any way I can pay you back for being the best big brother ever?

A thought flashed through Mark's head, that this was his chance to end this nonsense. He could tell her that they had their fun, but now he was done. It was a stupid thought, and Mark discarded it as quickly as it had come.

Mark (9:40pm): I think mom's going to be gone most of the afternoon tomorrow. Sunday is book club, right?

Jenny (9:40pm): Go on... :)

Mark wrote his next message and paused, his thumb hovering over the send button. Looking down at his huge cock, twitching on his stomach in eager anticipation, expelled any last shreds of doubt.

Mark (9:44pm): I was thinking you could tie me up on your bed and punish my pathetic nuts until you have another orgasm.

Jenny (9:45pm): You really are the best big brother ever! :D

Jenny (9:46pm): I don't think I want to settle for just one though. Smashing those fat nuts of yours better make me cum at least... 12 times? ;)

Mark (9:47pm): LOL, 12 times!? What if I can't make you cum 12 times?

Jenny (9:48pm): I'll keep smashing them, you silly goose. Duh!! As I recall mom is out of town all next week for work ;)

Jenny (9:49pm): Also, don't you beat your meat tonight! I want you to be an eager little beaver when mom leaves tomorrow :)

Mark (9:50pm): Do you think I could cum tomorrow?

Jenny (9:50pm): Hmmm...nope, don't think so. :)

Mark (9:51pm): What about next week?

Jenny (9:51pm): Ummm...no, doesn't seem likely :P

Mark (9:52pm): Not once all week!?

Mark looked down to see a pool of precum forming in his navel.

Jenny (9:52pm): Yeah...sorry buddy. Not even once :/

Mark (9:52pm): So you're just going to pummel my poor balls all week, without giving me any sort of release?

Jenny (9:53pm): Poor boy...it sure does sound that way :)

Mark (9:54pm): Thanks little sister! :)

Jenny (9:54pm): LOL Awww...you're such a good big brother. Nighty night, make sure you and your balls get some rest. You're going to need it ;)

Mark looked down again at his swollen balls. It would be a miracle if they weren't the size of grapefruits by the end of the summer.