The Mary-Sue of Maryland: Denial, Anger, Bargaining, Climax - The Stages of a Sister's Cumming

*SLAM*

Lily had her thumb on the top corner of his door-frame, sealing the door shut with darkened eyes. Cameron’s heart was beating up to his brain in panic, as he hadn’t even seen his sister move from the bed. One second she was on the bed, the next at the door. How fast was she now? Either way, his attempts to actually pull the door free of her mere thumb was completely fruitless.

”I know what I want, Cammy.” She was still giving a smile, but it was shaped differently. It had lost its playfulness, its lightness, instantly reminding Cameron of a dog with its hunt between its teeth. It was a smile of hunger. “Don’t you understand that I see the way you look at my body?”

He gulped, those words cutting deep as the memories of his dreams came back to him. These thoughts tore him up, certainly, but he had hoped he kept them deep within, away from Lily’s observation. “Lily, I-”

Her smile grew ever wider and sinister. “You look at my boobs. I get that, what boy doesn’t like boobs?” She squeezed them together and gave a little moan, those nipples splattering their milk from their girthy length to deeply soak the upper half of the apron with darker streams. “But you don’t just think about my breasts, Cam.” She trailed her other hand down to her boxers, and snapped the band off.

Much to his shock, Cam not sure if he was horrified or not yet, she actually didn’t have male genitalia down between her legs! A simple slit glistened back, aroused but certainly feminine. His mouth started stuttering, “Lily, your-”

“I learned this trick for you, bro.” She gave a grunt, her legs flexing as those lower lips parted ever so slightly before there was a popped explosion which burst forth juices to the floor. Her cock was back and with a fury, angrily red and twitching, ascending high over her bowling ball testis like the bow of an old galleon. It smeared his bare chest, Lily taking care that her urethra dripped on his little pointed nipples, which tingled like mad basted in her seed. “I saw how much my gigantic bulge distracted you so I managed to retract it at will. But now?” She gripped the base and gave it a large fwap to his chest, speckling pre-cum as far up as his hair. “I see how you miss it. How dare I take away the thing you fantasize about, right? You love my dick.”

“Lily, I don’t-”

”Shut up, i-idiot.” Her fists flexed as her entire body swelled with muscles, going from soft sexy into body builder fit in a millisecond before she exhaled to smile again. “Don’t you realize how insulting it is when you say you don’t want it? I mean, I see even on your face now that you want to suck it like a lolly! Don’t be in denial, Cammy.” She got on her toes and ensured it dab his neck with hot blobs of cum, poor Cam already looking like he had a bukake on his chest just from her faps.

Cameron gritted his teeth, getting frustrated that she just wouldn’t take no. “We’re brother and sister, Lily! We shouldn’t-”

”And I’m saying that shouldn’t apply to us because we’re so different! I’m tall now, but I’m going to be the tallest, sexiest, richest, most famous, smartest woman ever, you know. Real soon too!” She put her hands together and actually got down on her knees. “Please, Cammy? Don’t you see how happy I can make you? You think that a girlfriend and a job is all I can give you? Just give me time, I’ll get you a car, a house, a plane, a-anything you want if you just listen to me.”

Fuck, fuck, fuck. Dude just suck her dick, she’ll literally make you a king.

“I-I said no!” Cameron started to bang on the door. “Let me out of here!”

”M-Maybe I’m not giving you a choice though, huh?” She got back to her feet and snapped up his wrist. With a quick gesture with her knee, she scooted his feet off the floor and had his back half-way up the door. “The way I see it. I’m bigger and stronger than you.” She growled with her teeth. “Why the fuck am I even asking?” Her cock grew more turgid, feeling like a rifle laid across his tummy about to go off.

“D-Damn it, Lily!” He shook his head, breathes short as his feet longed to touch the floor once more. “You’re not that kind of person!”

”Oh yeah?” She smirked. “Just watch me, bro.” She threw him back to the bed, his body flying like a throw pillow as he bounced against the wall and tumbled to the sheets with only his feelings hurt, but afraid a lot more was going to hurt soon.

“Lily, please…” He put his hands together, unable to do anything but beg against the behemoth of a sister. “This isn’t you right now. You’re just overwhelmed with testosterone or something.” Her smirk continued and he shook his head. “Where’s my sweet little sister?”

A little bit of tears welled up in her eyes, stopping her aggressive stomping to his bed with her cock bobbing, and she sighed. “Y-You’re right, Cameron.” She looked at her hands and sighed deeper. “Are you alright?”

He rubbed his head as he sat up straight, the relief of her relinquished quest to pound him overwhelming any potential ouchies on his body. “Yeah, I’m fine.” He poked his body over, but noticed that the ruffling had caused the breakfast tray to flip over the floor. “Just a little food casualty is all.”

“Oh jeeze.” She bit her fingers and dropped to the floor to scoop up the greasy sticky mess from the floor back into the tray, movements frantic and shaky. “I-I’m so sorry, I-I’ll make you another one bro. Anything you want.”

”It’s alright, Lily.” He patted his stomach with a blushed face, trying to put what just passed behind him. “That was much more food than I needed and I definitely got my fill.”

”S-Sorry.” She blurted from her mouth as she covered her face with her non-sticky hand. “I guess I just don’t take the word ‘No’ very well, huh?” She gave another little laugh. “I-I mean, I don’t think anyone ever says it to me besides you.” Her laugh ended with nibble of her lips, looking down at her bobbing cock resting so content between her lactating tits. “But bro…”

His eyebrows furrowed. Had she really not learned her lesson? “No Lily. I’m not sucking your dick...” He trailed off with a huff, but his lips quickly added. “t-this morning.” Why did he add that?

Because you want it, you dreamt it, and you’ve already DONE it, dummy.

“Y-yeah, I know, but,” she started jerking it right in front of him, her eyes with a new steely focus on the glossy tip, uncaring that she was getting it dripped in sweet syrup. “I’m really hurting here. My balls are literally aching. I-I think they might be overproducing cum or something.”

As hesitant as he was to admit it, judging by her taut sack swinging below her giganti-cock, literally twitching, she might have had a point. Being this virile and sexy surely had to have some drawbacks, even if her back didn’t hurt from such large tits, and literally no one reacted negatively to her overwhelmingly arousing form.

“So..” She looked up, big eyes of shimmering colours of the rainbow sparkling to him. “Could you give me a hand job?” She seemed to be perfectly capable of beating herself off, especially at the speed her fist was flying, but he supposed that it wasn’t his fury nor firmness which she was interested.

This request didn’t seem as serious as a full-on blowjob, but he would frankly try to avoid giving any kind of ‘job’ if possible. He wasn’t a working boy after all and he certainly didn’t want to start a habit of beating her off every time she got a boner.

Just for now though, right?

“No.” He shook his head, not sure if he was referring to her or angsty voices in his head.

“Hmm…” She nodded. “What about if you finger-”

“No.”

”Not even in my-”

”No.”

”Fine.” She huffed, no doubt wanting to cross her arms, but one hand was fully occupied. “What if you just, I don’t know, held my balls while I jerked off?”

His eyebrow raised. He was showing steel-will so far resisting what frankly they both wanted, but considering she wouldn’t let up, could he compromise on this? “Well, I think…”

”Please?” She let her lips tremble. “I’m so close to climaxing, you wouldn’t even have to hold them for long.” She stood to her full height with her shoulders back, cockhead gasping inches from his sitting face as she grabbed it with her other hand, hips thrusting through the orifice she made with her palms. “They’re aching bro!”

“I-I’ll do it.” He inhaled with a finger raised. “For medical reasons.”

”Medical?” Her eyebrow and smirk raised.

“Y-You know,” he rubbed the back of his head before dropping to his knees below her cock, “to check for irregularities or something. It’s for your health, right?” Anything to make this lewd crotch grabbing as platonic-looking as possible. After all, what was wrong with a little sibling health-checks?

“Oh yes!” She grunted as she saw her brother dive below her dick. “It’s definitely for my health. I feel so built up from not cumming for so long! My dream only made things worse for my big, and heavy, balls.”

His eyebrow raised, almost certain it couldn’t have been more than an hour since her last splooge based on the smell of hot sweat and cum on the underside of this shaft. That musk was back in his nose though and he felt like fainting. How he hated to admit he missed it! He had his tongue out momentarily, leaning his face up to lick it before he shook his head.

He was playing a doctor, damn it, not a cum-slut.

Cusping, his palms raised beneath the smooth, hairless sack with hardly a wrinkle to take away how sloshingly full it was. Her testis continued to press quite the impact on the taut sack, their shape and cum conveyor tubes visibly pumping virile cream sauce which was rapidly filling up. His little digits clasped a bit, delicate as he felt fingers make the slightest indent on her ballsack, but was amazed how firm his sister’s nuts were. He tried to squeeze and lift them a bit, just to feel them up more, but he was immediate struck by two things.

One, his fingers could hardly flex, feeling he was trying to crush two coconuts with his mere hands. It was impressive as once he was pressing his full strength into them, they remained feeling soft but somehow steely firm. The second thing he noticed was trying to lift them was hard, his arms giving a little shake as his muscles burned as if he was moving furniture. How could anybody carry such a heavy pair between their legs? A quick glance avalanche of thigh muscles around him, and he had his answer.

“Oh fuck, fuck!” He hadn’t even noticed what Lily was doing with her hands in the meantime, so focused on her sack. Her hands were around her bulbous glans, gripping tight with all ten fingers as she flopped her amazonian tree-trunk like the world’s largest champagne bottle. “You massage my balls so good, bro… So good! Can you feel how much cum is struggling there?”

Squeezing as hard as he could, he couldn’t help but notice as she merely moaned at his touch, his tiny hands unable to bring anything but pleasure, no matter the **** he through forth. Even in her presumably most **** place, Cameron was no match for his sister’s massive form. This made his cock throb more than he liked to admit.

Dude, lick it, she won’t even feel it!

“Mmm…” It was him moaning now, his face in her warm cum hammock, sniffing and tasting her musk like free buffet night. He could feel it growing too. He had a hug around it, and certainly as it had reached semen capacity, her body adjusted, tight sack sagging lower in order to accommodate her coming cum blast. It was a spectacular sight, his sister becoming a more productive breeder in front of his eyes and he took another sniff. But he stopped himself quickly to pull his head back, realizing he went a bit on auto-pilot there.

Lily certainly didn’t notice though.

“I-I’m C-C-CUUMMING!” Her cry was triumphant, rattling the very light fixtures themselves shaking as her body rumbled, mighty ballsack seizing up to supply the arriving cum-train from nut-station. What came from the end wasn’t a hose, as Cam expect, but a full-on cum ball which smashed through the actual wall, a giant dripping hole in its wake.

Before he knew it, she had stepped over him with her shuddering body to shove her cock inside, giving her deep feminine moan as she felt her cock bloat,pump and fire again, now all inside of the drywall of his room. He looked at the growing dark trail as it stained through the wallpaper, no doubt making the wall as weak as foam as so much voluminous sis-sauce pumped down.

It was a sight worthy of a national park seeing his sister cum now. Her overjoyed face as each load swelled her massive veiny shaft, shaking it before she let out a giant cry as it blasted from the end of her cock. It was the length of time which was really impressive though, surely minutes had passed as he sat on the floor watching, but she continued to pump at such a speed, the dark stain of liquid almost spread to the entire lower part of his bedroom wall.

Finally, with a sigh, she flopped back to her butt and wiped her brow, smile bright. “Thank you so much, Cam. That was… incredible. I’m going to get you to massage my balls again as soon as I can.”

”Y-Yeah.” He said, his nostrils still stained as he took a line of ball-sweat straight up his nose and to the brain. “But remember that we didn’t agree to any blowjobs or-”

”Don’t worry.” She bounced to her feet, cock slipping back into her lower lips as simple as flexing her thighs, smooth down there once more. “I see the problem now, and I won’t repeat it.”

”Oh, that’s good.” He sighed relieved, a little chuckle coming to him. “I was worried there for a moment.”

”Yeah, my problem is that I came unprepared!” She snapped her finger and nodded. “Obviously you weren’t going to suck my dick because I merely wanted you to. I need to come with arguments and something to convince you why this is the best option!”

“That’s not-”

”Got it!” She turned on her heel. “So, I’m going to do some research on why my bro should just love sucking dick and I’ll be back later, alright?” She winked before picking up the ruined breakfast tray and wiggling her butt out of the room. “I’ll fix the holes in the wall, and the ceiling I made last night, when I find time to study about home repair. Bysies!”

“Wait, Lily!” He got to his feet with his hand out, but it was far too late. Sighing again, he sat on the bed and rubbed his cheek. He didn’t know how much longer he could resist. It was hard enough to resist just now, so the image of her sister coming back with any reason didn’t fill him with much hope. Hell, she could come back and lie about blow-jobs curing cancer and he’d probably spread his lips wide for her.

Picking up a piece of bacon from the sheets beside him, he crunched on it as he grumbled, doing the right thing was so hard when you had a boner. Getting up though, he realized probably the best place to go right now was the shower, getting the smell of cum and balls off him while he jerked a quick one off to ease the tension.

What was he going to jerk off to? Blowing his sister of course, he was far too gone to think of anything else, and he’d be surprised if anything else would even excite him enough to climax. He wasn’t disturbed by this, but it did press his mind to admit that he might want to hurry on trying to solve the mystery of whatever was causing this to his sister.

*Crash*

He was just about down the hall when he heard something crash in his sister’s room. He was almost certain that she had gone to the kitchen after his room, so he was a little curious by the disturbance. Carefully he opened the door, and let out a sigh of relief at the mundane sight.

His mother was currently bending over, picking something off the floor to put it in a cardboard box labelled ‘Lily.’

At least it was mundane at first.

She turned her body and he nearly choked up all her breakfast. His mother, Tetyana, usually as skinny as a rake except around her chest, was looking pregnant. This wasn’t a few weeks after the fact either. She was bloated bigger than he had ever seen a woman, her striped shirt unable to pull past her popped protruding belly button as she smiled brightly, not as perturbed by this as her son.

“M-mom?” He gasped as he fully stepped in the room, hoping this was nothing more than some kind of strange prop on her.

“Oh darling son!” She said sweeter than a sack full of sugar cookies, which was usually a tone she didn’t know. “Did you come to help mommy pack up some things?” She rubbed down her body with her hands, her lips pursed as she passed her inflated breasts almost triple the size he’d seen them last with crowning fat nipples before she sailed to the underside of her belly. “You know it’s harder to move now.”

There was around five billion questions flying through his mind, though it all pointed to another person for the answer. He settled on asking something easier. “W-What are you doing?”

”This?” She gave a little kick of the cardboard box before giving a melodious sigh. “I’m packing up Lily’s things. She says that she won’t be with us very longer since she wants to move out before she grows out of the house. We’ll use her room after she’s gone.” She smiled looking over to him. “She says she’s taking you as well, you lucky dog. What fun you two will have in your new place!”

”I-I-” His tongue was diving back down his throat he was so at a lost for words, unable to get even his thoughts straight before she continued.

“I’m sure you have questions about this.” She lightly rubbed her stomach and cooed. “Your sister, the sweetheart, told me that she didn’t want her parents to have empty-nest syndrome, so she put new children in me early this morning. Twins she said!” Her lips were bit. “I-I wasn’t sure at first, but your sister’s body has become… incredible. She told me it won’t be long until I give birth to your new brother and sister, able to start anew with them and-”

”Y-You let Lily put a baby in you!?”

“Yes!” She covered her face and slowly fell to her knees, belly taut with mass rubbing the floor. “I-I know it was wrong but… but… It was wrong but…” She looked up from her hands and smiled. “It was the best moment of my life! In an instant I felt as if this was my purpose, to give birth to her and then for her to give me children! I-I’ve searched to be filled and feel whole at the bottom of a bottle, or at the church or in other men, but it was your sister’s…” She tightened her grip on her knee. “fucking huge cock, which made me feel most happy.” Her eye twitched. “I-I love her… Just in a new way a mother can.” She gulped. “My head is still spinning, my body weak from the way she pinned me to the bed, touched my body all over. And when her hot dick was inside? Ooo~! It felt like it was deep enough to be fucking my throat!”

”F-fuck..” Why the hell did he have a boner right now, his mind was telling him this was so fucked up!

Dude, you and your mom should double team her. You’d make a great bunch of cock-sleeves.

Well, his mind should’ve been telling him that something was wrong.

“Anyways.” In a snap, her disposition changed, getting back to her feet and swaying over like she was walking on clouds. “Just because you two are leaving, doesn’t mean that I don’t want to see you several times a week.” She smirked as she looked over his face, spotting something dripping from his ear. Her finger snatched the dollop and hold it in front of his eye just enough to demonstrate she knew what her daughter’s cum looks like. “You don’t think you can just hog her all you want, do you?” She growled. “I’m her little slut-mom after all.”

As she passed by him out of the room, Cameron’s eyes threatened to fall from his skull they were bulging so much. His mouth wouldn’t stop mouthing obscenities, his mind rewinding and watching what he just saw. This was getting damned dangerous now, and he needed to solve this mystery fully soon, or else he too would be caught in his sister’s lust.Yet, as his erection throbbed, he couldn’t help but shudder at the thought that this was what his sister was meant to do.

Cameron, brother of a new Goddess? The only question he had now was would he fight it? He’d decide after the shower, washing the dried cum on his chest first.