Siblings Discovery

This story is entirely fiction, it contains sexually graphic material and should not be read by minors. If you are offended by coarse language or graphic sexual content, particularly involving urination and feces, siblings, and teens, then you should not read this story.

Otherwise, enjoy, feedback is always welcome

Siblings discovery.

Character intro:

Tiffany is an average 21 year old girl, pretty but not a model, more of a girl next door kind of girl. She has brown hair and green eyes; she is about 5'7, weighs about 130lbs with a 36" chest and 34" hips, a smaller 26" waist, she has long legs with a 33" inseam. Being on the swim team she has a fit body.

Her twin brother Mark has golden brown hair, and brown eyes, he has a strong jaw. He is about 6' tall and weighs 160ish pounds. He has a respectable 38" chest and 32" in waist. Mark plays competitive baseball and keeps in good physical shape.

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Chapter 1

It was a Sunday afternoon; Mark was home alone. His mom (a single mother) had taken Tiffany to a swim meet, and they wouldn't be home until at least dinner time. He put down his PlayStation controller and headed to the kitchen to grab something to eat. He grabbed a banana and headed back to the living room, he slumped down on the couch and threw on Netflix and ate his food.

As he sat on the couch, half bored, he started to feel restless and a little horny, as teen boys often are. He pulled out his phone and started scrolling through some porn sites, he slipped his hand into his track pants and started rubbing his semi hard cock. He found a particular video that caught his attention, it was a brunette who had been rubbing her cunt through her panties while giving instructions to the viewer on how to jerk off through his pants. His cock was fully erect now and he was following along with the girl on the screen that told him to slide down his pants and start slowly tugging his cock. Then the girl on the screen slips her panties off and pretends to hand them to the viewer through the screen.

"I want you to hold these to your nose" the girl commanded.

He wasn't sure where to go with this as he clearly didn't have any panties... well, he didn't he thought but.. no, he had to shake that out of his head... but he couldn't... he paused the video and pulled up his pants. He got up and headed upstairs, he got to the top and stopped in the hallway, he shouldn't do this he thought, but his hard cock needed attention...

"it's harmless" he thought to himself "no one will even know" and he headed towards his sisters room. He stood in her doorway, hesitating again. He held up his phone and looked at the teen on his screen.

He hit play on the screen the girl said 'Let me show you what I want you to do, and she pulled out another pair of panties. 'I had a really good time with these today, I want you to take my panties in your hand and take in the scent. I want you to smell them, starting from the front' she said. He paused the video again.

"Fuck it" he thought and headed towards her closet, he started to open her closet door and then thought to himself that he really needed to cover his tracks, so he took a pic of how she had left her closet door. He opened it, and then took a pic closet to ensure he could put her clothes back the way they were. He reached into her underwear section and pulled out a cute pair of pink panties, he couldn't believe he was holding his sisters underwear. He held them up to his nose and inhaled, the panties were clean though and smelled of fresh laundry soap... He looked down and saw her hamper...

"Could I? Am I really going to find a pair of my sisters dirty panties" his stomach flipped and his cock throbbed.. 'fuck... fuck it' he thought.

He flipped open the soft cover and took another pic of how her clothes were in there, he figured he could get them close enough. He reached into the hamper and started sorting through her dirty clothes until he found a pair of light grey panties, he pulled them out and looked at them, he put his phone down and held the panties open, he looked at the crotch area, it had some faint white streaks and instinctively he brought them to his nose.

He inhaled and took in the smell of dried up pussy juice, his legs got weak and his cock bulged in his pants. He grabbed his phone and cut through their cheater bathroom and into his own room. He stripped out of his pants and got onto his bed and sat on his knees. He rested his phone on his headboard, freeing up his hands, he reached out and pushed play.

The girl on the screen was on her knees, sniffing the crotch of her own wet purple panties.

"Work your way down the gusset taking in the smell of my sweat" The girl on the screen said "and my sweet, sweet pussy scent".

Mark followed along and brought the crotch of Tiffany's panties to his nose.

"Smell my pussy juices that are there, trapped just for you. Maybe if you're feeling really naughty you can taste them.".

Marks body shuddered at the words, he paused the video... could he really taste the pussy juices on his sisters panties... "you're just following along with the video, pretend they're her panties" he thought to himself. He took a deep breath and stuck out his tongue, he lightly pressed it to the crotch of Tiff's panties.

There wasn't much of a taste, so he pushed his tongue to the fabric a little harder, a sweet and salt taste danced on his tongue. He had eaten out a girl before, he had been with his last gf for about a year. Although they hadn't had sex, they had done pretty much everything else, including one failed attempt at anal. But what he tasted on his sisters panties was so much sweeter, so much better than his girlfriends pussy... he wondered why, but tried to push thoughts of his sisters pussy out of his head. He pressed play and focused back on the video.

The girl giggled "breath them in, savor that taste" she said "now keep moving your way down my panties, because it's not just my pussy scent you get, is it?" she continued, looking at her panties.

She giggled some more "you love the way my panties ride up between my tight little ass cheeks" she taunted "the panties capture that soft subtle ass smell of mine. You'd love to sniff my ass, huh?..." she said looking into the camera.

Mark sniffed the ass crack of his sisters panties, there actually was a distinct pungent order to them. He held them out and looked into the ass crack and saw some light brown shit streaks painted on her light grey panties.

The girl on the screen sniffed her panties "...run your nose all the way down from my pussy, all the way up through my ass crack" She moaned "you can lick them, you can suck on them, you can shove the whole pair in your mouth if you want to" The girl said and then the video cut. When it came back on the girl sat on her knees, just like Mark was, but now she was wearing a strap-on with a good size cock hanging off it. "Now I want to see you stroking" she said

Mark reached down and grabbed his throbbing cock; he began to pump it in his hand with his sisters panties up to his nose.

The girl moaned "I want to see your cock bulging and throbbing in your hand. In fact, lets help out your strokes a little. I want you to spit on your cock like this" She commanded as she spit on the strap-on. She giggled and rubbed the spit over the dildo.

Mark did exactly as he was told and spit on his cock, he rubbed his spit around the head of his cock.

The girl spit some more and so did he.

"Now you can really start stroking for me, you like that huh? Nice long strokes now, panties in one hand, cock in the other" she instructed "fuck yes, keep stroking for me, stroke and sniff, and lick" she begged and moaned as she stroked the cock between her legs.

Mark followed along eagerly sucking on his sisters panties trying to get those white streaks cleaned up with his mouth, he eagerly pumped his cock with his other hand.

"That taste makes you go a little wild huh" the girl on the video asked.

"Fuck yea it does" Mark said out loud.

"You just want to go fast" she moaned again "you know what else you can do? If you really want to experience me, make the most of all the pussy juices on my panties. You can wrap these around your cock, make sure to get my crotch right on the head of your cock" The girl instructed..

Mark obliged wrapping the panties his cock, the white stained panties being poked at by the head of his cock. He paused for a moment, as he realized that it was his sisters cum stains touching his cock right now, still, this was pretty much the closest he had come to having vaginal sex, so he pushed the thought of it being his sister out of his mind and went with it.

"Really go for it, just stroke my panties. Might need to add some more spit yea?" the girl asked as she spit on her cock, she moaned and bucked as she stroked the panty wrapped cock.

Mark spit some more on his cock and followed along "your cock looks so good with my panties wrapped around it" the girl encouraged.

Mark continue to pump his cock, it was starting to swell. "does your cock smell like my pussy now, really rubbing it on there" The girl asked "does your cock capture my scent?".

"You want my smell up your nose and in your mouth don't you? You want me all over you, don't you?" the girl begged. "Keep on stroking" She moaned "make the most of my panties, keep on stroking".

Mark leaned forward and took a deep breath as he kept pumping his panty wrapped cock.

"you know what you should do next?" she said with a laugh "you know..."

Mark swallowed hard, he was worried about what she would say next, but he let the video play.

"I want you to cum on my panties" She said as she bit her lower lip and giggled "I want you to mix your cum with mine. My dirty, smelly panties" She moaned and spit on her cock again "it feels so fucking good to stroke, doesn't it? Knowing your cum and my cum are going to mix together. That you're going to shoot all over my panties" Her voice quickened.

Mark moaned as he pumped his cock, he held Tiff' panties in front of the head of his swollen, throbbing cock.

"you're going to cover my panties with your cum" She panted as she sniffed her own panties and stroked the rubber cock "come on, breath in my scent, get one last taste and get ready to explode in my panties".

Mark held the panties to his nose, breathed in deeply and then shoved the panties in his mouth one last time, he sucked as much juice and shit streaks out of them as he could and then he wrapped the panties just over the head of his cock and started stroking again.

"Stroke fast for me now, my panty lover, get ready to explode for me! Are you ready?" She asked enthusiastically "Yea... In 3 I want you to empty your load into my panties, mix our juices together" The girl instructed, smiled and panted and stroked on the cock furiously.

Mark pumped quickly now, wanting to cum in time with her demands.

"Ready? 3... 2........ 1.... cum, cum now" she moaned.

Marks body bucked forward as the first wave of warm sticky cum shot from his cock into his sisters used panties, he continued to pump as another shot, and another shot filled her panties and leaked out into his hand. He had never cum so hard, or so much in his young life.

"Mmmm" the girl moaned "fuck yes, mmmmm, that looks so good seeing your cum in my panties. That was so wonderful you emptying your cum into my panties. It looked so fucking good" she said as she rubbed her breasts. "now mix your cum with mine, take my panties and bunch them up" she said.

Mark pulled the wet, sticky panties off his now subsiding boner and squeezed them in his hands

"Sniff them, smell your cock juices and my sweet pussy juices mixed together. I want you to use my panties as often as you can" She blew a kiss and the video ended.

Mark fell onto his back, completely drained of cum, he let out a huge sigh, he was completely spent, after some time he gathered himself enough to get up and made his way to the bathroom to clean himself up.

He tossed the used panties into his sink, he tossed his shirt onto the floor and hoped into the shower. As the water ran over his firm body he relaxed, he looked out the glass shower door and saw the cum soaked panties in the sink, to his surprise he felt his youthful cock twitch. He had never been able to get hard shortly after cumming before, this was a new experience.

He grabbed his hardening cock and pumped it delicately in his hand, it was sensitive, but not tender, he was able to increase his grip and pace. In a moment of panic, he realized the panties needed to be cleaned, so he thought what the hell, he jumped out of the shower and grabbed them and brought them into the shower with him.

He felt the sticky cum getting a bit crusty. He held the panties to his nose and smelled the mixed fluids. He wrapped the sticky panties around his cock and pumped. He got under the stream of the shower to soften everything up, and he pumped his cock with his sisters now heavily soiled panties wrapped around it. He reached out and held himself up on the wall as he pumped, he jerked faster now and it didn't take long this time, he shot a second round of warm cum into his sisters waiting panties. He caught his breath, and then focused on cleaning up. He washed and rinsed his body and then he washed his sisters panties as best as he could in the shower.

He got out and tossed the wet panties back into the sink and then dried himself off... "fuck... the panties are going to be soaking wet when I put them back" he thought in a panic... Quickly he got himself dressed and then he grabbed his towel and stuffed his sisters panties in it and wrung them out as hard as he could, trying to dry them. "I'll use Tiffs blow dryer he thought" happy that he had this idea. But time must have been lost on him because he heard the front door unlock downstairs.

"OH FUCK!" he panicked. He raced into his sisters bedroom and stuffed the panties back into the hamper and closed the door, he ran back through the bathroom and into his room, closing his adjoining door behind him.

"Oh shit, I didn't put them back the way they were, fuck, maybe she won't notice.... I sure hope they're dry before she goes into her hamper" he thought to himself.

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Chapter 2

Tiffany made her way up the stairs to her bedroom, she wanted to have a shower, she hated showering at the pool and wanted the chlorine out of her hair and off her body. As Tiffany ran up the stairs her mother called to her "please bring your laundry down so I can get started".

"No problem mom, I'll bring it down after I shower" Tiff called back.

"OK, let your brother know too" Her mom added.

"Will do" Tiffany said and made her way up the stairs.

Tiffany went down the hall and knocked on her brother's door.

"What?" She heard him call through the door.

She opened the door, her brother was laying on his bed, and she immediately noticed his phone was up on his headboard, which she thought was odd, but then again he was odd, she thought.

"Hello... what do you want" He said, snapping her out of it.

"Oh, yea, mom wants you to bring your laundry down so she can get started" Tiffany said.

"Oh, uh, yea, ok..." Marks stomach jumped into his throat, fuck, one of them is going to notice a pair of wet panties "Did you want me to grab yours too?" He offered.

"What?" she said puzzled "since when do you offer to do anything?".

"It's just if I'm going down anyways" He stammered.

"I'm fine, I'll take my own laundry down after my shower" She said as she left Mark's room and closed the door behind her.

She went to her room and closed the door, she dropped her swim bag on the floor and headed into the bathroom. It was a bit steamy, and the fan was on. "Mark must have showered" she thought to herself. She closed her door and then walked over and locked the door on Marks side. She stripped off her shirt letting out her firm breasts and perky little nipples. Next, she stepped out of her leggings and panties exposing her beautiful and clean shaven teen pussy. She turned on the shower, the water got warm quickly. She stepped in and let the warm water flow through her hair and over her body, the warm water relaxed her tense muscles from her swim meet.

Having washed her hair and cleaned her body she got out of the shower and toweled herself off. She wrapped one towel into her hair, and another around her body, then she unlocked the door to her brothers room and made her way into her room closing her door behind her. She went to her closet and opened the door, she pulled the hamper out into her room, not even realizing she had left it closed, and it was now open. She dumped out the clothes onto her floor, figuring she could at least sort the clothes for her mom as she was nice enough to wash them for her. She tossed the towel that was around her body onto the floor and grabbed a soft pair of pajama pants from her closet slipping into them, she grabbed a cozy night shirt and slipped it on (she rarely wore a bra around the house). She turned back to her laundry and started sorting lights from darks, she grabbed a delicates bag and shoved her panties and bras into that as she went. As she got to near the bottom of the pile, she grabbed a pair of grey panties...

"Are these wet?" she thought to herself. They did feel damp to her, she brought them to her nose, they smelled clean, like soap. "What the fuck?" she looked over at the clothes she had stripped out of to make sure they were the underwear she had been wearing when she left the pool, they weren't. She looked at the bathroom door towards her brothers room... "nooooo, it couldn't be" she thought, but they definitely felt like they were slightly damp. She shrugged it off and finished sorting the laundry and took it downstairs.

The rest of her evening was uneventful, but as she laid in bed, she couldn't shake the feeling that something was off. She still wasn't convinced that her panties weren't damp, and Mark wouldn't make eye contact with her all evening. Were the two things related? Eventually she fell asleep, and when she woke up the next morning the thoughts had left her mind.

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Chapter 3

It was Thursday afternoon as Mark left school, he met his sister in the parking lot. They waited together exchanging small talk until their mother pulled up and they hopped into the SUV. They lived close to the school and their mom pulled up to the front of the house.

"Tiffany, go grab your swim gear, Mark, we'll see you later, I'll bring dinner home. We should be back around 6 or so. Love you" Their mom said.

Mark got out of the SUV and headed into the house and into the kitchen to grab a drink, moments later he heard the front door close as his sister left the house. Immediately his stomach flipped, he made his way to the living room and looked out the front window and watched as his moms SUV backed out of the driveway and headed down the road.

"I can't, can I?" he thought to himself. Truthfully, he hadn't been able to stop thinking about the powerful orgasm he had just a few days ago with his sisters panties wrapped around his cock.

"Fuck it, I have a couple hours" he thought looking at his watch which showed just after 4pm.

He headed up the stairs and towards his sisters bedroom; he opened her door and entered her room and headed for right to her closet. He immediately opened her hamper, since it had only been a few days there wasn't much laundry in it.

He was a bit hesitant to go further, it would certainly be easier to tell if things weren't as they were. He was already nervous enough that she had suspected something from the last time, he didn't want to give her any more reason to think he was perving in her room. After a brief hesitation he took a quick picture. He told himself he would be more careful this time, then he reached inside poking through the clothing. He was happy to find a pair of baby blue g-string panties. He had actually been watching a video he had been wanting to follow along with, and the girl featured a pair of blue panties.