A surprise visit in the night and the ill-considered flaunting that followed.
Mom and dad stayed in their room during dinner. Mom must have felt sorry for his language inadequacies and showed him what triple negatives meant.
"Doesn't taste like your blood." I chewed a piece of stir-fried chicken which she'd cut herself while cutting it.
Nell's laugh shot a tidbit of green pepper over the table. "How would you know what I taste like?"
"Let's call it a bet."
"It's a fools bet. You'd have to taste all of me to be sure."
"That's a job I can excel at. But you promised, never again." I reminded.
"Just jerking your chain, Kiddo." She forked another random clump of stir-fry.
I reached under the table with my left hand and let two seconds pass. "Just letting my boner get some air."
"Damn, Craig, can we stop with the dick talk?"
"You've got a chain too, Sis." Then she knew I was kidding.
"Enough." Nell stood from her chair and marched around the table, stopping next to me, facing my right side, and peering down the front of my torso. "Let me see it." She reached for her shirt buttons.
I turned my head and looked up. "On your knees - whenever you want to do that." I nodded at her ready fingers.
Her eyes squinted, brain calculating. Slowly she bent her legs and shrank downward. I scooted back in my chair and spun towards her. I had lied about opening my pants, but now my fingers rushed to flash what she craved.
Her lips pursed at my deception, yet she probably gave a few points for my convincing performance. I mentioned previously that we didn't hate each other.
My dick had first been stimulated by our banter about tasting her. It ballooned quickly within my pants at my new, favorite fantasy - watching Sis kneel before me.
Six inches of solidifying cock sprang out from my pants.
Nell had released her shirt's top two buttons. Cleavage of the deep kind spoke in my head. "Taste me. Taste me."
"Get it hard." She scoffed as if six pudgy inches weren't worth her time. She worked the next button down her shirt but didn't completely free it.
I grabbed my dick and stroked. I doubt it made a difference, I was going to be rock hard in seconds.
Nell nodded every so slightly and let that button escape the strain building across her shirt. I could see her lavender bra cups, how they molded to the tops of her young, outthrust tits. She panted. "Let me see it."
I drew my hand away. All eight and three quarter inches stood proudly from my groin. My somewhat hairy balls remained undercover.
Her hands stilled. Her eyes roved length and girth. I eyed the edges of her bra. My hands wanted to return to the job needing doing. Maybe Nell would-
"Okay." My big sister stood up and pulled the flaps of her shirt together. "I've seen enough." She turned and headed to the hallway. Flipping a sneer at me over her shoulder, she snorted. "Funny, I don't seem to be leaping to suck your cock down my throat." Her head twisted forward again. "Good night."
It was six-thirty.
Fuck!
I finished eating and packed up the leftovers. Before hitting the sack around ten, I jerked off to the finale of ShirleyThreeCunt's video and eventually admitted to myself. Nell had gotten me good.
The afterglow of my okay orgasm helped me to sleep once I stopped kicking myself. In the middle of the night I just barely woke up, eyelids closed. I would have been deeper asleep if I hadn't crashed early. Dim light seeped through them, and I felt my sheet and blanket slip slowly down from my neck.
W. T. F. ?? I cracked opened my eyes. One hovering hand held a weak flashlight. The other was pulling bedclothes off of me. Her smell told me what I needed to know. I played dead, watching the blurry events through slitted eyelids. By the time her other hand revealed my semi-rigid dick it was already growing harder. Could this be my moment to avenge Nell's coup d'grace?
The light twisted away and fell to the bed. Her empty hand reappeared with a cell phone in it. Suddenly a brief, warm breeze wafted across my penis. She was blowing on it!
Nell wanted that dick pic badly enough to sneak into my room and take a photo while I was sleeping! Six hours ago she had made a point of being immune to my enlarged charms.
Soon I would have proof that my proud sister couldn't handle living with a monster cock within operational range. And yet, my reasons to prevent her from electronically capturing the gift that Nature had generously anointed me with, remained the same.
My heart thumped almost painfully. Fuck, thinking about finally getting the advantage over my sister was turning my dick into steel! I shot up from the mattress and knocked the cell phone out of her hand! "I got you, Nell!" I said in an elated, harsh whisper.
"Oh, shit!" My mother cried out! She bolted through the open door, but then stopped inside the hall.
"Mom???" I hissed.
She cringed but straightened tall before speaking to me. "W-we'll talk about this t-tomorrow." She used her mom voice.
"Get back here, now." I scooted up in bed and rested my back against the wall.
She had no choice. It was likely that she knew that I wouldn't blackmail her, but the chance that I might, however small, sent her slinking into my room.
"Close the door." I said with righteous authority.
"Craig-" She closed the door to a hairline crack and went silent.
"Yes, Mother?" I waited. The dim light from the flashlight on my bed made my eyes look fully evil.
"I need your protection." She confessed.
I abandoned my commanding tone and assumed an understanding one. "You have Nell's, um, weakness too?"
"Gods, I feel so stupid." She cast down her face and grimaced.
"Grab my desk chair and sit, Mom. This is probably going to take a while." Meanwhile, I remained naked up from my knees. My turgid prick strived to grow larger. It was the hottest fucking moment in my life!
I had to play it ice cold, damnit! I gulped, I had almost no experience at 'playing' my mother. I had only been successful in my earliest years, when a parent was supposed to be especially giving and forgiving to their children.
Mom seated herself beside me. Her eyes returned time and again to my prick which was accidentally lit up by the dropped flashlight, like Washington's monument. She tore her gaze away.
"I'll listen, Mom. You talk. No matter what you say, I'm here for you."
She didn't hesitate to confess. She couldn't sleep tonight having heard her daughter testify that she was getting access to a real, live, Big Cock. Not her words. She said, "Penis of exceptional size." My cock jolted at how hot that sounded.
Mother's imagination literally enslaved her, driving her from her marriage bed, collecting her phone and mini-light.
"I even used Nell's moisturizer, in case you caught my smell in the morning." She glanced again at my rigid staff before covering her eyes with her hand. "I'm so ashamed."
All she wanted was a picture that would capture the actual truth and give her something to focus on instead of potentially obsessing over her blood related son.
I couldn't not feel sorry for her. Incest may be a commodity in the pornoverse, but in the real world, people still got arrested for it, or at least shunned by society.
"I'm sorry." I bit my lip.
"Will you- um, let me..." She reached for the phone that had struck the floor.
"Sorry, but no, Mom. I can't let anyone take a picture of it."
"I'll keep it hidden. I know how to encrypt files."
"Yeah, you would. But at some point, Nell is going to find out. She'll know if you're avoiding the slightest, interesting subject. You two talk about everything! You'll pay a worse price from her until you've shared that picture." I exaggerated. My dick was thinking for me. Regardless of my earnest and great love for Mom, I couldn't let this opportunity of a lifetime escape. I almost cried, unable to fight MY weakness.
"P-please, Craig. Now that I've seen it, I may start overthinking my motivations. I love your father."
"You do, I know, more than Nelda and me combined." I assured her. "I'd never ask you to cheat on him."
Mom's voice hardened. "What you're really saying is, you're not going to let go of my mistake tonight. You're going keep, if not wield, the leverage."
"Mom, it's not like that. Not much anyway." I sighed in order to look vulnerable. "If I told him about tonight, and you denied it, Dad'll believe you and only you, forever and ever. He'd probably tousle my hair and call me an indelicate prankster." Indelicate had been one of his words of the day not long ago. "I couldn't tell Dad anything against you that would stick. He loves you too much."
My mother had only bewilderment for our new reality and conspiracy. "What next?"
"Just sit there, Mom." I reached out, grasped my towering, urge pressurized dick. I slowly stroked its full length, flashing my mother a knowing smile.
She gasped. "How long do I have to sit?"
"Go or stay, Mom. That's your choice. If you decide to confess to Dad, tell him that you caught me masturbating. My hand moved smoothly not hurrying. It was feeling super good already, showing off to my mother.
Clearly torn, she sat restless in her chair. "Baby, please stop."
I kept jerking. "C'mon, Mom. You've enough backbone to walk away. You stand up to bricklayers and heavy equipment operators." I had to grin, watching her twist on her chair, her eyes glued to my wobbling pylon. Her heart ached to escape. That's how much control a deep fetish exerts when there's no danger.
"I need to go, to be with your father." She muttered without conviction. She worked her fingers together on her lap, like a zipper opening and closing. I think she was exerting incredible self-control against masturbating.
"I guess you'll miss it, then." I teased, slowly bucking my hips, countering my hand's movements.
"Please let me take a picture. I won't bother you again."
"That's why I won't let you, Mom. And that's not what I was talking about. You're too smart not to have guessed. Mnnngghh." I grunted. Sparring verbally with my mother and winning was jet propelling my arousal. I slowed down, to make myself last a second or two longer. "Tell me what you'll miss."
She bit her lip, but managed to whisper. "You - cumming." Her eyes glowed with anticipation, mesmerized by the distance my hand traveled with each stroke.
"Ding, ding, ding!" I grinned, then my body lurched, and I groaned loudly. "Uuuhhhgghh!!!" My body arched up from the bed! At the apex of my upward lunge, the tip of my cock opened wide and ejected a white hot bolt of heavy cream. That glob gained another two feet of altitude, peaking higher than my shocked mother's head. As it fell and splattered across my chest, another missile flew up, nearly as high. A third followed, and a fourth bullet spat. I grunted from each shot. I'd never cum so hard or so much! I looked nearly as amazed as she.
Then my body slackened. My orgasm had burned out its musculature from big-head to toe. I fell back to the bed, bounced, but my still turgid dick spewed forth a rich stream, which ended after lingering seconds. I had cum enough to coat half my chest and belly. Rivulets streaked down my sides. I didn't care if they soiled my bedclothes. I turned my head to Mother and grinned. "It's too bad so much cum went to such waste, right, Mum?"
Her shocked, incredibly excited eyes did not diminish, nor did she look at me or answer.
I prodded. "I bet you could have put it to much better use."
"Oh, you horrible boy!" Mom wrenched herself off of the chair and fled into the hall. She surprised me by slamming both my and her bedroom doors.
***
Nell drove me to high school after breakfast the next day.
"Who was slamming doors last night?" She interrogated me in her dilapidated Kia Soul.
Any answer would invite scrutiny, and Nell would scrape through any lies, probably drawing my blood in the process. "Who cares? It wasn't me. But as a reward for driving me this morning..." I opened my fly and pulled out a soft dick.
I doubt she felt herself lick her lips, and she waited until my growing prick was fully exposed before grumbling. "That's not going to get you regular rides to school." She promised.
"I'll take what I can get. But I'm the one who controls access." I added pretentiously.
"It's not fucking fentanyl." She snarled.
"Would you like to pet it?"
Her lips pressed tight, but she didn't growl. Her right hand reached across the console between our seats and took hold of the head of my dick. It lurched faster to life. She acted as if it was a casual touch, curiosity only, but her eyes kept drifting from the road.
"That feels nice, Sis, but don't wreck this wreck."
"Hey, I maintain this Soul like it was my own!" She began to pet my now fully hard cock. Her steering remained steady.
I began to lose it. Here we were in a semi-public situation which Nell didn't seem concerned about. I was about to shoot a geyser of cum from the daring it took to lure her hand to my prick. She simply drove and stroked her younger brother's stiff erection. "That's enough." I looked worried and pulled her hand off of my dick. It ached at her pleasuring's sudden absence, while I zipped back up.
"Hey, I'm in total control here." She frowned at the windshield but glanced over to me. "What gives?"
"That's all you get for now." I swallowed, hoping my bluster was convincing. Her driving didn't worry me, but I couldn't risk losing my advantage because my cock craved what she had been doing. We were in a battle of resisting our lusts, a battle that would determine who was in control over the other.
Her lips snarled but she shrugged. "Whatever, Idiot." Nell kicked me out of her car a block from my school and proceeded to her college classes.
***
I was studying in my room - not my fav thing to do, but I did like getting decent grades - when I heard Mom thudding her boots in the garage. Nell hadn't returned from her classes. She often hung out with friends after her classes.
I stood up from my desk and stripped. Holding my soft penis, I ambled out and down the hall. When she stepped through the side door she found me standing across the living room, stroking my prick. It ballooned quickly at the sight of her dusty clothes, sweat tangled hair, and her awesome tit swell.
"CRAIG!" She shouted. "What do you think you're doing?"
"Kinda obvious, Mom." I grinned. "You seemed to like it last night. I figured it'd be a welcome sight after a hard day's work." My hand worked confidently up and down my thick shaft.
She steamed for long seconds, breath hissing through her nose. Mother was pissed, but she couldn't deny the accusation. "I'm going to shower." She dumped her sling bag and stomped towards the hall. She'd left her boots in the garage, but her feet pounded carpet angrily. Normally, she used the closer shower, but I suspected she was headed to her room's half-bath.
"Would you like to wash it?" I grinned as she strode past growling.
"Got any dinner requests?" I called after her. "I'll have my special sauce ready soon."
I heard her mumble before escaping to her room. "Get a grip, Rona." She was either aroused or riled. It didn't matter. I felt power over her and jerked myself faster while I scurried over to a cupboard in the kitchen. I relieved a day's tension by spooging into a shot glass, filling it to the brim!
After showering and dressing into regular clothes, she found a note on the table. "Here's some refreshment for you, Mom. Plenty of protein and electrolytes." The shot glass rested warmly on the note.
"This is not funny, Craig." Mom called. She took the glass to the sink and washed it out.
I walked in still naked, my dick dangling comfortably. Cold, my penis shrivels down to less than three inches, three fat inches. On a warm afternoon, such as that day, it hangs down almost six.
She turned to me, eyes quickly checking it out. "Will you please go dress? Your sister could come home any minute." She hadn't told me to dress, and that's when I knew I push her a little more.
"Sorry about the cum shot, Mom. You took longer to change than I expected. I'll whip up a fresh load." I took my dick in hand and stroked blood into it, not in any hurry.
"Craig, I'm telling you to go dress."
I asserted, "You aren't worried about Nell showing up, Mom. What are you worried about? This?" I stopped rubbing my nearly full prick and held it up from below. At least eight, semi-firm inches presented before her. "You know I'm not gonna do anything to you. I want to enjoy you watching me."
I expected her to turn away in a huff. Mom only watched my hand when it resumed pleasuring me. "Th-then hurry it up." She actually sputtered. The clean shot glass shook in her hand.
Fuck! You can't imagine how hot it was to be jerking off in front of your big tits mother when she decides to watch. I didn't need to rub cock any faster. Her acceptance was all I needed for my epididi-thing-a-ma-bulb to pressurize! "Bring the glass here." I told her.
"I'm not getting any closer."
"You want to catch it, Mom, right? I saw how excited you were to see me shoot last night. You don't want me to spooge all over the floor."
"I'll make you wash the floor." She resisted.
"But that would be such a waste." I almost frowned. "Just place the glass over the head, Mom. That'll protect you." I took a slow step closer. "I can shoot pretty far."
"Here, you take the glass." She held it out, arm trembling. I could only imagine the forces conflicting in my mother's head. She wasn't so sexually free wheeling that she would jump at the chance to suck out her son's sperm, yet she had to be fighting a very personal urge to engage with the incredible cock presented. She was married and still in love with her husband, my father. Maybe she cheated but very rarely if so. To participate in her son's wicked fantasies was no doubt the worst she could imagine doing.
I grinned at her, but I felt her frustration. My brick-house mother was at her limit. I would either go down, broken and bleeding, or she would go down begging. "My hands are busy, Mom." One was jerking off to the sexiest situation ever. The other was fondling my ball sack. "You're welcome to substitute for one of my hands, and I'll hold the shot glass."
"Don't be absurd. I-I'm going to my room." She crabbed to my left and looked beyond me.
"So, anytime I want to drive you away, I just have to whip it out and whip it good?" My voice resonated with schadenfreude.
If Mom had full control over her senses, she would have batted my idiot gloating away with a well phrased, cutting retort. She just growled and swept past me. Her eyes glanced at least once upon my full, confidently stroked erection before she disappeared into the hallway, her ass working desperately to not sway at me.
I let go of my rampant dick. I had nutted earlier and lost the urge when Mom called my bluff. I needed to provoke her fetish in a way she couldn't deny. How to do it would take some time to figure out.
I remained naked, a means of flaunting my advantage. I flopped down in Dad's easy chair and messed around with my phone.
"Of course you're naked." Nell shut off her phone upon entering the house and finding me nude.
"I'm feeling freer in our home lately." I smirked. "You should try it."
"You're just reverting to brat-hood, Brother. It's not going to win you any points with me."
"Hey, I'm very mature!" I plopped my phone face-down on my lap. "I resisted making a 'pointer' joke."
"Oh, let me guess..." Her mouth's left corner snarled up. "...You think I'm your 'Pointer Sister?'"
"Heh." I faked the laugh. Her pun was better than the one I'd come up with. "You're a crack-up, Nell."
The crack-up issued a snarl and marched to her room.
I needed to rethink my 'master of the house' plan.
***
It was late night when Dad found me in the living room, fully dressed and playing a video game. My heart wasn't into it. It was an old game, and I was shooting through the level.
"Can I plug in a second controller?" Dad had played before. He sucked at most games, but it was good to hear his interest.
"Aren't you beat from work?"
"Sure am!" He answered brightly, grabbing the second controller from under our 42" monitor. He must have been so tired, he didn't care any more. I hear that manual laborers often push themselves too far.
"I'm at level twelve. Don't lose your shit when the horned toad boss scurries out."
"Fudge the toad. I'll probably get wasted by the mini-bosses, unless I don't." He revved up his hyper-cycle and proceeded to back me up as I dodged and swerved and fired bolts and beams and missiles against Evil Desert Denizens of the Dakotas.
"Shields down to fifteen percent." He warned at one point. He was talking about his bike's shields.
"Keep back, I got you covered."
"I'm just playing for giggles." He gunned his hyper-cycle and fired off a stream of flaming projectiles. I struggled to dodge friendly fire.
"Oh if you're going to play that way." I sped through his assault wave and fired beams across the Razor Rattler's glowing tail, lopping it clean off. Dad had just reduced the menace's HP to the point where it's tail was vulnerable. But the mid-level boss shot out it's tongue, ensnared Dad, bike and all, and jerked them right into its gullet. His life bar vanished.
Suddenly, Dad erupted with a stream of giggles. He was that tired.
I paused the game and set down my controller. "Dad, you need to get to bed."
"Just a little longer." He looked through other games on the shelf.
"Mom is probably lonely." I hinted.
"Yeah, that's how it works best." He mused, not realizing that he was talking about their sex life to his young son.
"I'd be annoyed if I was waiting for you, and you were wasting time nearby."
Dad's silly demeanor vanished. He frowned at me, shaking his head. "Your mother doesn't wait for sex, Craig. I'm giving her time for herself." He tapped a finger against the game box. "Um, forget I said that."
"Whatever, Dad. It's not like I want to know." But a question shoved its way into my frustrated brain. "Hey, if I was pursuing a woman, what's the best way to catch her?"
"Something tells me you're not talking about love and marriage."
"Dad, I'm eighteen. I'm not gonna marry unless a woman clobbers me and drags me into it."
"Welp, there's nothing wrong with safe adventures." He looked thoughtful for a minute. It wasn't a good look on him. "You know I used to think I was a breast man. Now I know it a woman's shape that appeals."
"Huh?"
"Everyone's different, but for me the size of a chest no longer matters when I'm playing with it. What matters is how you play and how it responds. I'm still attracted to a large breasted woman, but it's not the boobs themselves, its how they look on her."
I did not get it. Dad was rambling and possibly incoherent to himself. "Good talk, Dad." I turned back to the screen and unpaused the game. He shrugged and got up. I lost track of him as I sought to defeat the horned toad boss.
***
"Even underwear is an improvement, Little Bro." The next morning, Nell passed me in the hall as I was exiting the bathroom. I had been fully hard going in, but pissing relaxes my boner. Still, when her eyes touched upon even the soft bulge in my tighty-whities, they lit up, and her lips grinned slightly.
Her reaction was markedly different from seeing my naked hard cock upon returning home the day before. I pondered that difference throughout breakfast. Mom and Nell nattered about last night's Late Night host and his guest magician.
Dad browsed the news on his phone and sipped tea. He wasn't a coffee man. I had already drunk two cups of black, but I picked at my bowl of granola and fruit. Why did it matter that Nell preferred to see my prick bulge behind underwear instead of in the open where Nature intended it to be?
"Magic only works when you can distract the mark away from seeing the trick."
"I enjoy figuring out tricks, even if I'm fooled." Mom got up and hugged Dad. "I can't be late today. The building inspector is expecting me."
Nell smirked. "Is that why you're wearing panties instead of boxers, Mom?"
Mom pretended to cover Dad's ears. "Hush! I only wear boxers when I expect to work up a sweat." She examined her jeans, to see if the panty lines were too visible.
"Have a fine day, Mother." Dad kissed her.
I asked Nell for a ride to school, but she still had homework to do before she could drive out.
I humped my books to school, and along the way, I figured out my next plan to rule the Williams women.
***
Nell had returned from her classes before mine let out. "Hey, Nell, don't gloat but I'm gonna apologize. I've been acting like I'm in a lame porno. So what if I got a big dick. You don't want to see it paraded around the house." I pushed my hips forward a little bit, to underscore my words.
My clever sister looked suspicious. I never retreated from a situation with her in which I was winning. She glowered. "So -- you gonna sell tickets?"
"Funny." I smirked. "If you do feel like seeing it, just ask. If it's safe to whip it out, I'll share." I grabbed the waistband of my jeans and pulled them taught against my hidden, half-boner which made a shallow bulge from my crotch.
"Will you expect me to share?"
"I won't lie. I liked seeing your tits - a lot, and I won't ever not want to see you fully naked, but that's your choice." I spanked the front of my jeans once, as if sealing the deal and went to my room.
I mostly worked on my homework. Occasionally, I would send a link to Nell's inbox, with the note, "Here's a dick that's bigger than mine." Big dick pics weren't difficult to find on the internet. When Mom came home, hours later, I had sent Nell just three links.
I greeted Mom in the hallway and hugged her, briefly pressing my half-hard dick through our jeans. Backing away, I reached down and tugged at the crotch material. "I think I got a rash from gym class."
She sighed through her nose and shook her head. "Ask your father to look at it."
"Nah, Mom. I just want you to suggest a cream or something."
She paused then, not looking suspicious but contemplative. "Diaper ointment could help. Don't try an anti-fungal. Some of those burn skin."
"Yeow!" I cupped a hand over my groin, protecting it reflexively.
She glanced down. Immediately, I pulled my hand free to reveal the bulge in my trousers. I scratched my head and acted bashful.
Mom blinked, jerking her eyes away, but then letting them take a faster glance. Her lips pursed. "I hope it's not burning too badly."
"Just annoying, Mom. I'll go buy some ointment."
"Your father has some. It's in the master bath." She walked into their room, to change out of her work clothes. I waited in my room.
When she reappeared, ready to supervise dinner, I fetched Dad's tube of ointment. In the main bathroom, I squeezed some out into the toilet and flushed. Going to the kitchen, I took my place at the counters, ready to process food.
Occasionally, when Mom could see, I scratched the bulge in my pants.
When I'd finished eating dinner, that night, I got up from the table, sporting a full erection behind my pants. It hadn't been difficult to imagine sexy times with Mom and/or Sis. I trod slowly to the sink and rinsed my dish and silverware. Then I strode with purpose to my room. I started up a game on my computer - after sending another dick pic link to Nell's inbox.
I only played a couple levels before there was a knock at my door. "It's Nell." She spoke quietly.
"Come in." I hit the computer's off button, moved to sit on the side of my bed, and hoped for a miracle.
Nell entered shyly. Was she teasing me? I prepared for backhanded vitriol. "Can I see it?"
I had to pretend, suppressing a grin. "See what?"
"Don't." She shut the door behind her. "You sent those dic picks to make me want to compare."
"You're overthinking them. But would you mind asking more politely?" I unclasp my jeans and grabbed the zipper tab.
Nell hummed a growl. "May I please see it?" She grimaced abruptly. "Don't ask 'what' again, or I'll pound you."
"Thanks for asking. I said I'd show it if you asked. But I will ask you to get on your knees."
"That bullshit again?"
"Only because it'll excite me, Sis. You want to see it hard, don't you?" I held the zipper tab.
She knew I was trying to manipulate her, but my logic was solid. "I bet it excites you to have your sexy sister on her knees before your exposed dick. Fantasize all you want, but that's as far as I'll go. We both know that I'm going to want to see your big pud - every now and then. If it helps your meager ability to stay aroused, I can lower myself for the duration."
She had to get a dig in, somehow, or she would have felt less in control. My self-confidence easily batted aside her slight against my libido. I pulled down the zipper tab and reached into my briefs. Her lips twisted as if slurping the saliva behind them. Her gaze intensified as she knelt to the carpet in my room.
When my rapidly hardening dick plopped out, she actually flinched. I think more from surprise than concern. She didn't say anything.
"You can jill-off, if you want." I grabbed my staff and slowly rubbed it.
She snorted. "Jill-off has got to be the lamest term for finger fucking a twat, twerp." Her hands went to her stretchy top, and she cupped her double covered tits. Clearly she wanted to diddle herself somehow, but was too embarrassed. This way she could pretend to hold them up for me, while she fingered her nipples so slowly, she thought I wouldn't notice.
I repressed a grin at her subtle, self-stimulation. "They look great, Sis." I openly admired her large boobs, complimenting her. I had to keep myself from jerking faster than one cycle per second. This first time, when I was actually making progress on my sexual ambitions, I needed to keep pressure on her but keep her stress low.
My dick had reached it's full, eight and three quarters length. The tip of my middle finger, wrapped around my girth, was half an inch from the tip of my thumb. My other hand cupped my ball sack and fingered my taint. The good sensations from wanking and gazing down at my kneeling sister, built steadily. "Do you want to see it cum? You know that's what you're doing to me, getting me all hot, you kneeling like that and holding out your tits."
A rare but light blush tinged her cheeks. "Keep quiet!" She hissed softly. Her fingers began pinching her turgid nipples through her shirt and bra. I'm not sure she was aware how obviously her fingertips tugged and poked at her hidden nipples. I nearly gulped and my heart thudded faster. I wanted to tell her, "Go on and frig your puss. You know you want to." But that would have spoiled her mood. She needed me to be only a big cock that happened to live in the same house.
Nell moaned, her hands nearly tearing at her shirt. Her eyes had glazed over.
I grunted and my prick throbbed in my hand. Despite my oncoming orgasm, I managed to maintain a casual pace. I wanted to yell and pound my meat hard!
"GAAAaaaahhh!!!" My sister cried out. "Fucking BIG COCK!" She roared and nearly toppled backward as her orgasm catapulted her mind into the pleasure dimension!
"Gods, Nell! You came from just pinching your damn juggs!" I exclaimed. My hand abruptly sped up and down my rock hard dick. I needed to cum - right - n-
"Fuck you, Craig!" Sis cried out, half conscious. She covered her heaving chest with her arms, rose up unsteadily, and staggered to the door. "I hate you." Her words slurred from the mind-blast she'd experienced watching me jerk my monster. Nell had to grab the knob to steady herself. She wrenched the knob left and right, pulling, opening the door, slipping out and dragging the door shut behind her.
I laughed and heavy cum burst out from my rocking prick! The globs arced high before splatting against the carpet that was still warm from my sister's knees. Nell's surprisingly quick and powerful orgasm let me imagine that I would soon have total control over her sexual needs.
A silly grin remained on my face while I cleaned up the mess I'd made. I had to fetch soap for the rug. No one troubled me. I half worried half hoped that Mom might investigate. How she would react to my long term campaign was a mystery, but my confidence soared at Nell's capitulation to her fetish.