The Dark Room Prank

The warm Chennai breeze rustled the curtains of the apartment, bringing in the distant sounds of city traffic. I was visiting my older sister, Priya, for a two-week holiday. We had ordered takeout, opened a bottle of wine, and were thoroughly enjoying a lazy Friday evening. Her husband, Karthik, was stuck at the office pulling a late-night shift. We were sitting in her brightly lit living room, swapping old stories and laughing, when Priya suddenly got a mischievous glint in her eye.

"Archana, let's play a prank on Karthik tonight," Priya giggled, swirling the red wine in her glass.

I raised an eyebrow, a smile creeping onto my face. "A prank? Jiju looks so exhausted when he gets home. Are you sure you want to mess with him?"

"That's exactly why!" Priya laughed. "He needs a good shock to wake him up. I have the perfect idea. We'll set up a dark-room tease."

I leaned forward, completely intrigued. "Okay, didi. What exactly is a dark-room tease?"

Priya pulled out her phone, her thumbs hovering over the keyboard. "I am going to text him right now. I'll tell him that his loving wife is feeling incredibly naughty tonight. I'll say that a 'special surprise' is waiting for him in the guest room."

"And then what?" I asked, trying not to laugh.

"I'll tell him the room will be pitch black, and he is absolutely not allowed to turn on the lights or speak a single word," she explained eagerly. "He has to come in blind. I'll wait on the bed, let him stumble around in the dark, and just when he leans in to kiss me, I'll turn on the bedside lamp and blast an air horn!"

I burst out laughing. It was a silly, harmless joke, perfectly fitting my sister's chaotic sense of humor. It sounded like a fun way to end the evening, and I was more than happy to help her set the trap.

Priya hit send on the text message. Almost immediately, her screen lit up with a reply. She squealed in delight. "He said he's leaving the office right now and driving straight home! He took the bait completely."

"Perfect," I chuckled. "So, what's my role in this grand scheme? Do you need me to film his reaction from the hallway?"

Priya stood up, stretching her arms above her head. As she did, she let out a massive, jaw-cracking yawn. She blinked heavily, rubbing her eyes. "Actually..." she mumbled, looking suddenly very tired. "That wine hit me harder than I thought. I am completely exhausted, Archana."

"Don't tell me you're backing out of your own prank!" I gasped, shaking my head.

"I can barely keep my eyes open," Priya confessed, slumping slightly. "Listen, why don't you do it?"

"Me?!" I shrieked softly, my eyes widening. "Didi, I can't tease your husband in the dark!"

"Oh, don't be a prude, it's just a joke!" Priya waved her hand dismissively. "You just go wait in the dark guest room. When he comes in, stay totally silent. Let him grope around for a second to confuse him, and the moment he touches you, you flick the lights on and yell 'Surprise!' It'll be hilarious. He'll be so embarrassed that he was trying to romance his saali."

I sat there in silence while I processed what she was asking. The truth was, I had secretly harbored a massive crush on Karthik for years. The thought of being in a pitch-black room with him, even just for a prank, sent a sudden thrill straight to my core. I hadn't had any excitement in my own marriage lately, and this felt incredibly naughty.

"Come on, Archana, do it for me!" Priya begged, already walking towards her master bedroom. "I am going to crash. Wake me up and tell me his reaction tomorrow!"

Before I could protest any further, Priya disappeared into her bedroom and firmly shut the door. I was left standing alone in the living room, my heart suddenly beating a mile a minute. I looked down at my oversized t-shirt and loose cotton pyjamas.

If I am going to pull off a dark-room tease, even just as a prank, I need to make it convincing for those first few seconds. I can't be wearing frumpy cotton sleepwear. He would realize it wasn't his wife instantly.

I walked into the guest room, opened my suitcase, and dug through my clothes. I bypassed the sensible nightgowns and pulled out a deep burgundy lingerie set I had bought on a whim months ago but never had the courage to wear for my husband. It consisted of a sheer lace bralette, a matching lace panty, and a translucent full-length robe.

I slipped off my cotton clothes, letting them fall to the floor, and stared at my reflection in the mirror. I had a slim, well-toned body that perfectly highlighted my curves. My attributes were 33-28-33, but my most prominent feature—the one that always drew stares—was my incredibly full, round, heavy South Indian ass.

I slipped on the delicate lace panty. It fit perfectly over my generous buttocks, the fabric straining deliciously against the swell of my cheeks. I pulled it up just below my navel. Because I had shaved my pussy completely bare earlier in the day, a faint outline of my camel toe was visible through the delicate burgundy lace.

Next, I clasped the bralette. My firm, C-cup breasts just about fit inside, spilling over the top edge to create a spectacular display of cleavage. I threw on the sheer lace robe, tying a loose bow at my waist. The translucent fabric hid absolutely nothing; it only made the entire package look incredibly sexy and mysterious.

I applied a touch of matching burgundy lipstick, lined my hazel brown eyes with thick kajal, and brushed out my thick, medium-length black hair until it cascaded over my shoulders. I stepped back and looked at myself.

"Wow," I whispered to my reflection. If Karthik could actually see me in the light, he would definitely have a heart attack. But he won't. I'll turn the lights on the second he touches me. Just a quick joke.

I walked over to the wall switch and turned off the single overhead bulb. The heavy blackout curtains were drawn, blocking out the Chennai streetlights completely. The room plunged into absolute, suffocating darkness. I couldn't even see my own hand in front of my face.

I climbed onto the bed, lying flat on my back, my heart pounding against my ribs like a trapped bird. I spread my legs slightly, the cool air of the AC touching my lace-clad thighs. I waited in the pitch black. Ten minutes passed. Then twenty. The anticipation was driving me absolutely insane.

I kept reminding myself of the plan: stay silent, let him stumble to the bed, wait for him to lean in, and then flick the bedside lamp on and shout. It was foolproof. Just a harmless bit of fun between sisters to tease the working husband.

But as the silence dragged on, my mind started to wander to darker, more intense places. My breath quickened. The sheer lace rubbing against my sensitive nipples was making me incredibly hot.

Suddenly, I heard the faint click of the apartment's main door unlocking. Heavy, tired footsteps echoed in the living room. My breath caught in my throat. I heard the rustle of a briefcase being dropped on the dining table, then the quiet squeak of the guest room door handle turning.

The door opened, letting in a tiny sliver of ambient light from the hall, revealing Karthik's tall, athletic silhouette. He had already unbuttoned his work shirt. He quickly shut the door, adhering to Priya's text message rules, plunging us back into the pitch-black void. I couldn't see a single thing.

I felt the mattress dip heavily next to me. A surge of pure adrenaline shot through my veins as large, warm hands reached out in the dark, finding my waist. I let out a soft, involuntary gasp, my hand hovering near the bedside lamp switch.

Instantly, I felt his lips near my ear. "Shhh," Karthik whispered, his deep voice sending electric shivers down my spine. "Be quiet. Archana is sleeping in the master bedroom, we do not want to wake her up."

My mind short-circuited. Wait, what? He thought *Archana* was in the master bedroom? He assumed Priya was the one waiting here in the guest room for the "surprise." The prank was working perfectly. Now was the time to turn on the light and laugh.

I moved my fingers to the lamp switch. But before I could press it, Karthik's hands began to explore my body in the darkness. He felt the sheer lace of my robe and groaned softly in appreciation.

"Wow... you really dressed up for this," he whispered thickly, his voice heavy with raw lust.

He untied the robe and pushed it off my shoulders. His large, rough hands cupped my breasts over the lace bralette. I arched my back, pressing my firm cleavage into his palms. The sheer pleasure of his touch completely paralyzed my logical brain. I didn't press the switch. I let my hand fall away from the lamp.

He leaned down and captured my lips in a deep, hungry kiss. He tasted like mint and the faint musk of a long workday. I opened my mouth, letting his tongue slide past my teeth, matching his frantic pace.

I was completely lost in the moment. The prank was dead; this was reality now, and it felt too damn good to stop. As we kissed, his hands roamed downwards, tracing the curve of my waist until they found the flare of my hips.

He grabbed my ass, his fingers sinking deep into the heavy, fleshy globes. I heard him gasp against my lips. He squeezed my buttocks with immense pressure, kneading the round flesh with a desperate, almost obsessive hunger. He had always been polite and distant, but in the dark, he was an absolute animal.

Karthik pulled away from the kiss, his breathing ragged in the dark. He pushed me gently onto my stomach and pulled my lace panties down my legs, tossing them onto the floor. I felt the cool air hit my bare ass, followed immediately by the scorching heat of his hands.

He spread my cheeks wide, his thumbs tracing the cleft. He was obsessed. He was treating my ass like it was a sacred artifact. I couldn't believe my sister's husband was this incredibly passionate.

He trailed hot, wet kisses from my lower back down to the swell of my buttocks. I let out a passionate sigh, "Oh yes... please..."

He flipped me back over, positioning himself between my legs. I felt the thick, hard length of his cock brush against my wet slit. My pussy was betraying me, getting incredibly slippery and eager. I lifted my head, but I still couldn't see a damn thing.

He lowered his head and I felt his tongue part my labia. He began licking my completely bald, shaved pussy. He paused for a fraction of a second, his tongue exploring the smooth, hairless skin. Priya always kept a thick bush, but I was completely bare. I held my breath, wondering if this was the moment he would finally realize the prank had gone entirely off the rails.

But Karthik didn't stop. He simply grunted in approval and continued to lap at my clit with ferocious intensity. I was writhing against the sheets, my hands gripping his thick hair. The pleasure was overwhelming. After a few minutes of agonizingly good oral, he moved up, guiding his rock-hard cock to my entrance.

He pushed forward, sliding his massive dick deep into my pussy. I gasped loudly into the darkness. I had to admit, I never knew my sister's husband was hung that much. His cock felt incredibly long and painfully thick. It was stretching my tight walls to their absolute utmost limit.

Do not get me wrong, I was enjoying every single millimeter of that stretch. Being fucked by him was my ultimate fantasy brought to life in the dark. He began to thrust, pulling almost all the way out before slamming his hips forward, burying his shaft to the hilt.

"Ahhh... Karthik, oh fuck yes," I moaned softly, forgetting for a moment to disguise my voice. The wet, slapping sound of his pelvis against my ass cheeks filled the silent room.

Karthik was fucking me so hard and so deep. The sheer power behind his thrusts was making the heavy wooden bed frame creak in protest. My whole body adapted to taking that beautiful, sudden fuck, postponing all the guilt and explanations for later.

I was totally happy taking his cock in me, my legs wrapped tightly around his waist to pull him even deeper. He gave me a few kisses on the lips in the darkness, tasting my arousal on his own tongue. He rubbed and sucked my hard nipples through the darkness, finding them with perfect accuracy.

He kept at it nonstop, his breathing growing harsher and more frantic. He reached under me, gripping my large ass cheeks with both hands, using them as leverage to pound into my pussy with brutal, rhythmic force. I was climaxing, my inner walls clenching violently around his thick dick.

"Fuck... I'm cumming..." Karthik groaned loudly, his whole body stiffening.

He drove himself as deep as he could go and started shooting his huge load of cum deep inside my pussy. I gasped in shock as the hot spurts filled me. Oh God. He thinks I'm his wife, so he didn't pull out. The prank just became incredibly, undeniably real.

When he was done shooting his massive load of cock cream into my womb, Karthik collapsed onto my chest, panting heavily. He gave me a quick, affectionate peck on the cheek. Then, to my absolute bewilderment, he got up incredibly fast.

He grabbed his clothes from the floor and quietly slipped out of the guest room, closing the door softly behind him. I lay there in the dark, my pussy throbbing and leaking his semen onto the sheets. I could hear him walking into the living room and settling down on the sofa.

Why the hell is he sleeping on the couch? I thought, wiping my inner thighs with a tissue from the nightstand. It only occurred to me later: if he thought his wife was surprising him in the guest room, he probably didn't want to crowd the small bed or wake me up further by cuddling. He wanted me to rest.

I was far too embarrassed to walk out into the living room to wash up, so I cleaned myself as best as I could in the dark and tried to go to sleep. But it was a hopeless case. My mind replayed every single thrust, every squeeze of my ass, every heated whisper.

The next morning, the Chennai sun streamed through the gaps in the curtains. I woke up early, my body aching with a delicious soreness. I got dressed in a simple cotton kurti and walked out. Priya was already in the kitchen, brewing filter coffee. She gave me a sly wink. "So, did the prank work? Did he freak out when you turned the light on?"

I felt my face burn red. "Uh... yeah. He was totally shocked," I lied smoothly, turning away to hide my flushed cheeks. I couldn't possibly tell my sister I let her husband fuck me.

Karthik woke up a little later, rubbing the sleep from his eyes as he walked in from the living room sofa. We all sat together at the dining table for breakfast. The strangest thing was, Karthik acted completely and utterly normal. He discussed the traffic, his office deadlines, and the weather.

He didn't look at me in any different way. Even when Priya went into the kitchen to grab more idlis, leaving us completely alone, he acted like I was just his regular, boring sister-in-law.

That nonchalance was absolutely killing me. How could a man ravage my body in the dark, fuck me senseless for the first time in our lives, fill me with his cum, and then act as normal as ever only a few hours later? I couldn't digest this at all.

I had to do something about it. I needed answers. Once breakfast was done, I turned to him. "Jiju, could you drive me to the T. Nagar market? I need to buy some specific things to take back home."

"Of course, Archana. Get ready, let's go," he agreed instantly, grabbing his car keys.

We got into his sedan. He drove while I sat in the passenger seat, my heart hammering against my ribs. The air conditioning was blowing cold air, but I was sweating. We drove in total silence for ten minutes before I couldn't hold it in anymore.

"Karthik," I said softly, dropping the formal 'jiju'. "I want to ask you something. Secretly, please."

He glanced at me, confused. "Yes, please Archana. By all means, ask anything you want."

I took a deep breath. "Tell me what the hell happened in the guest room last night."

Karthik slammed on the brakes slightly, shocked. He looked at me with wide, horrified eyes, then smacked his forehead with his palm. "Oh my God, Shiva! Don't tell me you heard something through the walls? I am so incredibly sorry, Archana. How embarrassing this is for us!"

I stared at him, my jaw practically on the floor. I was completely shocked into silence. Could he really be that naive? He fucked me instead of his wife, and he STILL thinks it was his wife he fucked last night? The prank miscommunication was absolute.

Everything flashed back in my mind like a movie replay. The way he whispered about not waking 'Archana' up. The way he came inside me. He truly, honestly believed he had fucked Priya in the dark guest room.

Karthik broke the heavy silence, his voice full of genuine shame. "I am so sorry, Archana. I know Priya texted me about a dark-room challenge, but I probably pushed your sister into having sex too loud last night. I shouldn't have done it while you were visiting. Please accept my apologies and don't put any blame on Priya."

I looked him straight in the eyes, a wide, sarcastic smile spreading across my face. "You mean to tell me... you think my sister was the one making those noises when you fucked her in the guest room last night?"

Karthik chuckled nervously, clearly uncomfortable discussing this with his saali. "Come on, Archana. Any woman would make noises when she's... you know. She is a human being, and she was fucked hard after all. Just pretend it didn't happen, please?"

I almost lost control. I slapped the dashboard. "Karthik, are you that blind, or am I that stupid, or what?!"

He flinched. "Why? What did I do to make you scream like that? Look, I'm sorry if I used crude words in front of you, but you are a grown adult, Archana!"

I turned around in my seat, completely facing him, crossing my arms. I forced myself to cool down. We couldn't cry over spilled milk; the deed was already done, and honestly, I had loved every second of it. I looked at him with a predatory smile.

"Karthik, listen to me very carefully," I enunciated every word. "Your wife got sleepy and went to sleep in her own bed, in your master bedroom last night. She sent me into the guest room to prank you by turning on the lights. But I didn't turn them on."

I could see his brain struggling to process the information. The colour completely drained from his face. Karthik almost fainted right there behind the steering wheel.

"What... what the fuck?" he whispered, his eyes wide as saucers. He looked down at my lap, then back up at my face. "You mean... it was you I..."

He couldn't even finish the sentence.

"Yes, sir," I nodded firmly. "Although I totally believe you now, and I am sure you thought it was Priya, it was me, your sister-in-law, that you fucked mercilessly last night. Not your wife."

Karthik immediately pulled the car over to the side of the busy Chennai road, finding a spot under the shade of a large banyan tree. He threw the gear into park and killed the engine. His face was swollen and bright red with panic. I started to get a little worried about him; I didn't want him having a panic attack.

He started to mumble frantic, incoherent words. I reached across the console, grabbed his face with both hands, and pulled his head down onto my lap. "Hush up. Be quiet for a minute and breathe, Karthik."

With his head resting on my thighs, I stroked his thick hair gently. I giggled softly. "Karthik, I guess we can't reverse the action, can we? The prank went a little too far."

He was almost crying, his voice muffled by my kurti. "God, Archana. Honest to God, I did not mean to..."

I cut him off sharply, pinching his cheek. "Be quiet, you bad man. Why would you wish it didn't happen? Don't tell me I was a lousy lay in the dark?"

He lifted his head up fast, his eyes meeting mine. "No! God, no, I didn't mean that! You know you are gorgeous and incredibly hot. I must admit... I have had so many dark fantasies about having sex with you, Archana. But why would I do it that way, by accident?"

I laughed out loud, a huge weight lifting off my chest. "Well, that sounds much better. Do not tell me you didn't enjoy it. I will be completely honest and say I loved it. And since you admitted it, I've had fantasies about you too. I was supposed to turn the lights on, but your hands felt too good to stop."

He looked me in the eyes, a slow, wide smile finally replacing his panic. The tension in the car instantly evaporated, replaced by a thick, palpable heat. We exchanged a few naughty glances, letting the reality of our shared secret settle in.

Finally, Karthik cleared his throat, his eyes dropping to my chest. "I will admit one thing, Archana. When I was licking your pussy in the dark, I felt the difference. Yours is completely bald and so silky soft, while Priya has a bush. At the time, I just thought my wife had decided to shave for the special occasion."

I bit my lower lip, feeling incredibly naughty. "So, tell me directly... which one do you prefer? With or without the bush?"

"Your pussy," he answered without a single second of hesitation.

I screamed with laughter, slapping his shoulder. "You mean you prefer my pussy over your wife's? Over my sister's?"

"I meant I prefer the silky soft one!" he defended, laughing with me. "But... I have to be honest. There is something else..."

"What else?" I whispered, leaning closer.

Karthik's gaze darkened. His hand slowly crept across the center console, resting heavily on my thigh. "Your ass, Archana. God, your ass. Every family function, every time you wear a saree, I stare at it. It's so big, so round and heavy. When I grabbed it in the dark last night, I literally pretended it was yours. I was squeezing it, thinking of you. Finding out it actually *was* your ass I was kneading... it's driving me crazy."

His hand slid higher, creeping under the hem of my kurti. He found my panties, moved the cotton gusset aside, and immediately felt how soaking wet I already was just from his words.

He swallowed hard, his eyes burning into mine. "There is a nice motel just two streets away. Can we rent a room? Just to spend an hour or so before we go to the market?"

I wasn't shocked. My body was humming with electricity. But I teased him anyway. "Why, Karthik?"

"Because last night was pitch black," he growled, his fingers stroking my wet slit. "I want to look at your beautiful round ass in the bright daylight. I want to see your bald pussy while I eat it, before I fuck you again. Will you please?"

"Oh yes... yes please, drive," I gasped, my head falling back against the headrest.

We didn't say another word. Karthik started the car, his tires squealing slightly as he pulled back onto the road. We found a discreet, upscale motel in T. Nagar and checked in within minutes. The moment the heavy wooden door of room 204 clicked shut behind us, all pretenses vanished.

Karthik pinned me against the door, his mouth crashing down on mine. He literally ripped the kurti over my head, tearing the thin fabric in his haste. I helped him get rid of his shirt and trousers, my hands desperate to feel his bare skin in the light of day.

He spun me around, pushing my chest flat against the wall. He grabbed my hips and pulled my panties down, exposing my large, round ass to the bright sunlight streaming through the window. He groaned loudly, slapping my heavy cheeks, watching the flesh jiggle before burying his face in my neck.

He passed the tip of his tongue, his lips, and his rough fingers over every single inch of my body. He worshipped my ass like a starved man before throwing me onto the bed and burying his face between my legs. He made me scream and cum twice from his tongue alone, before he finally drove his thick cock into me, fucking me again and again until the Chennai afternoon slowly turned to dusk.