A Little Back and Forth [MF] [Str8] [Inc] [Mast] [Oral]

<CH 1>

The first semester of college, I had classes at 8am every day of the week. So when I got to come home on break. I was excited to not really have to get up in the mornings. I could sleep in, lay in bed with my laptop and generally not make much effort to do anything. With my parents at work, and my sister's high school not being on break yet, that first week I could really relax as much as I wanted.

The first couple of days, I slept in until the late afternoon. On Wednesday, for whatever reason, I woke up around 9:30 and was surprised to hear music, which must have been coming from my sister's room. I walked across my room and opened the door. Across the hall, her door was open just a couple of inches. Before I could yell out to her, she walked, wearing only tight, dark-colored jeans and a black belt, over to her dresser and pull open the top drawer.

My sister is about 5'8" and, maybe, 130 with long brown hair, almost always in a pony-tail. While her stomach isn't toned, it looked absolutely flat from the side-view I had. Her breasts were very cute and they hung just a bit. Without a bra, the top took a flat run out form her chest down to light pink nipple. From the nipple, they quickly curved under, giving a sexy crease under them, and some nice bulging out to the sides. In a bra, they looked like they'd firm up and show off ample cleavage. It was a startling, and very sexy, sight.

I held quite in a doorway for a minute while she pulled out a couple of bras from the drawer: black lace, a nude push-up, a green sports bra, a red sports bra, a full-cupped black bra. She looked them over for a few seconds and dropped all but the last one back in the drawer. My sister walked away from the dresser and back behind the door, so she was out of sight.

I blinked for a few seconds, taking in what I had seen. I did not expect her to have such a nice body. Being away for the semester, and the summer before traveling with friends, I didn't even remember how slim she was. She rarely wore very tight fighting shirts, so I hadn't realized how nice her breasts were. After a few seconds, I shook my head a couple of times to clear it and walked down the stairs to get breakfast.

A couple of minutes after I started to dig into my cereal, the music stopped and my sister bounded down the stairs into the kitchen, now wearing a t-shirt for whatever band she was listening to. She threw open the fridge and ducked behind the door without even noticing me. A couple of seconds later she popped back up with an apple and did a double-take when she saw me at the table. "Oh, you're actually getting out of bed today?"

"Yeah. What are you still doing home?"

"I've got a free period first thing in the morning on Monday, Wednesday and Friday. Since I'm a senior,, I don't have to even go into school until about 10. Oh shit," she said as she saw the clock behind me. It was 9:45. "I've got to run. See you."

She darted from the kitchen to the living room, then out the front door. I quickly heard her start her car and drive off for school.

I finished my cereal and went back to my room. I screwed around on line for a couple of minutes, before my vision from 20 minutes ago creeped back into my mind. I wonder how big her breasts actually were. The couple of girls I dated in high school, and the one I had started to see now that I was in college, were pretty flat chested – the largest was just barely a B. I looked up from my bed, out across the hall, and into her room. I could easily just go check. But that'd be pretty sleezy to do, right? Who cares, no one would know.

I got out of bed and tip-toed across the hall to my sister's open bedroom door. I don't know why I was trying to be sneaky, no one was home. I pulled open the drawer slowly, and reached in for the nude push-up she had taken out earlier. I found the tag and it was bigger than I expected: 38-C. Seeing that number, I felt the blood rush south a little bit. I put the bra back, and pulled out a few more to look at. There were a couple of nice, simple Victoria's Secret bras, similar to what she ultimately picked out to wear, but not too many ones that I'd consider "sexy" bras. Just the push-up and the black lace one. Most of them were white and black sports bras, with a few brighter colored ones. While poking around her bras, I could feel myself getting more turned on.

I opened the next drawer down in the dresser and discovered her underwear drawer. I've never really cared for thongs, and was happy to see not one in the drawer. There were a couple of plain silk black panties, a few cotton ones with various designs, and a large number of boy-shorts of different colors. I smiled as boy-shorts were my favorite cut of panties on a woman. I loved how they give form to each ass cheek and how an ass just peaks out of the bottom of them. Sis had good taste.

I pushed the panty drawer closed and took a look around the room. It hadn't changed in years. Her bed was against the wall next to the dresser. Across from the bed was a desk (with a window to the backyard on the wall between them). A book case was next to the desk, and then space where the door swung into. While in front of the dresser, I stood right in front of her closet door.

A smirk came to my face, and I pulled open her closet door and dropped my eyes right to the floor to a large pile of dirty clothes. Taking knee, I rifled through them a little bit. Among some random tee-shirts, a few pair of jeans, and her Sunday dress (it wasn't a church-thing, she just like to wear dresses on Sundays), I found another push-up bra (black with clear straps), a neon green sports bra (I remembered seeing the straps of them when I got home Friday night), a green and red stripped thong (boo), Wonder Woman cotton panties, and brown-gray boy shorts.

Grabbing these, I walked from the closet to her bed and sat down on the patch of sun coming through the window. I saw a slight glisten from the crotch panties. Holy shit. They were wet. My dick began to strain against my pajamas. I quickly flipped them inside-out and saw my sister's juices pooled in the crotch. The color of the panties hid the wetness, but there were clear white streaks inside of them. I rubbed my dick through my pants with one hand, and used the other the bring them to my face. I inhaled deeply and drank in the smell of my sister's dirty, wet panties.

As I pulled out my dick, I stuck out my tongue and pressed it to the fabric. It was sweet, with just a little hint of being acidic. The texture was little too thick for my taste, but I was still loving every second. I laid back on the bed and dropped the panties right on my nose while I peaked around for a tissue box. I wasn't going to last long. I grabbed some tissues from the box on the night stand and just barely got them over my dick before I came hard while my head swam in the smells of my sister's panties.

I got up, threw the panties back in the closet, pushed around the clothes a little bit, then closed the closet door and left the room. I screwed around online for the rest of the morning, rubbed out a few more thinking of my sister, then hung out with my parents when they came home from work.

Source: reddit.com/r/sexystories/comments/3acehb/a_little_back_and_forth_mf_str8_inc_mast_oral

10 comments

  1. <Ch 2> Friday morning, I woke up with my panties soaking again. Almost every day this week, I’ve been horny first thing in the morning. I glanced at the clock on my night stand. 9:08, fuck. I don’t have time to get off. I really should have just bought that vibrator Sarah and I were looking at at the sex shop last week. That’d do the trick quickly, but I can’t get off by myself in time to make it to school. Regrettably, I got out of bed, pulled off my t-shirt over my head and threw it to the closet floor. I held up a second and looked at myself in the mirror behind my bedroom door. I turned to the side. God, I wish I had a bigger ass. It’s alright, but it could definitely be firmer. I slapped it and watched it jiggle in the mirror. Well, ok. That’s pretty hot. I turned more and bent over a little bit. I glanced over my shoulder as I slid my panties down. Wow, that’s really hot. My ass looks way nicer bent over a little bit. As soon as I got my panties away from my pussy, I could smell that faint musk from my own juices. Fuck, why didn’t I get up a little bit earlier. I kicked my panties to the floor of my closet and grabbed my robe off the back of the door. I went across the hall and turned on the shower. It takes a minute or so to heat up, so I grabbed my toothbrush and some paste before taking a seat on the toilet. After peeing, I stepped into the shower with my toothbrush still in my mouth. I leaned my head back, under the water, and took a few deep breathes in between brushes. I spit out the paste, opened up the shower down and leaned out of it to toss my toothbrush into the sink across the room. I caught myself in the mirror over the sink and stood back up. I arched my back, stretched out as long as I could make myself and smiled into the mirror. My breasts look very perky when I do that. How can I balance making my breasts and ass look good at the same time? Hmm. I closed the shower down and took an inventory of the shampoo. I grabbed the coconut scented one, my favorite, and ran it through my hair. After quickly rinsing it, I added conditioner and grabbed my loofa and some soap while the conditioner soaked in. I started at the back of my neck and stretched it as I rubbed it clean. I pulled my hand down over my shoulder blades and between my breasts. My wrist just barely rubbed over my nipple as it went by, and I bit my lip as a little wave went over me. As I lathered my chest, my free hand wandered its way down between my legs. I parted my lips and ran my middle finger between my inner and outer labia. I could feel how warm it was, even over the heat from the water. I ran my finger between the labia on my left side, then along the right side. After a few slow passes on each side, I pulled in my pointer finger and ring finger to hold open my pussy and tickled the bottom of my hood just a little bit. I threw my head back and closed my eyes. I suddenly jerked my hand away and opened my eyes. Dammit. I can’t screw around. I need to get to school for that test. I quickly washed the rest of my body, rinsed my hair and turned off the water. After drying off a little, I wrapped my towel around my hair, threw off my robe and walked back to my room. 9:24. This is going to be close. I dropped my robe and pulled open my panty drawer. I looked over them for a second and grabbed nude boy shorts. These always made me feel sexy, and, dammit, if I can’t get off now, I might as well feel turned on all day. I opened the top drawer and grabbed my nude push-up. "I better match" I said to myself. I smiled a bit at my choices and turned around to see my brother looking at me from his bedroom door. "Fuck," I yelled. I grabbed the door handle and threw my bedroom door closed. I forgot he was here. I’ve had the past 3 months home alone in the mornings. I never worry about keeping doors closed. And now, he’d just seen me naked. "Oh god, I’m sorry. I just got up" my brother yelled through my door. "Whatever. Honest mistake. I’ve got to get ready." I yelled back. My heart was racing. I sat on my bed. I closed my eyes. Took a few deep breaths. It’s no big deal. We’ve seen each other naked. As kids. And it’s not like he saw me while I saw posing in the mirror. He didn’t even get to see how sexy I can be. Just regular, hair-in-a-towel me. So what? I stood up and pulled on the panties I was still clutching. I walked to my closet and opened it to get out clothes. I caught my eye in the mirror again. I was surprised to see my nipples were hard. I didn’t even notice that in the scramble to hide. Were they hard when I got out of the shower? Did he notice that? No. I don’t think they were hard. I pinched my left nipple as I talked to myself. It must have been the panic of seeing him. I pinched the right one and pulled on it a little bit. The adrenalin from that turned turned them on-er-made them hard. It’s weird how fear and arousal can have the same effect. I circled my nipple with a finger and then shook my head. I’ve got to get ready. I finished getting dressed and ran out to the car at 9:39 with my hair still in a towel.

  2. <CH 3 > I avoided being alone with my sister all weekend. It was easy as our parents drug us around town all weekend to visit various family, and we both closed ourselves off in our rooms when we got home at night. We hadn’t talked about what happened Friday morning, but I could feel it hanging in the air. When I got up Monday morning, I tried hard to push my sister out of my mind. I walked quickly out of my room and down the stairs without glancing in the direction of her room. I grabbed some cereal and sat down on the couch to watch some TV. A couple of hours passed and I was lost in whatever show I was watching. Without hearing her, she plopped down on the coach next to me. "Hey, listen, about Friday, I’m sorry about that" she said quickly. "Don’t worry about it. I’m sorry too." "For what? You didn’t accidently flash me." I smiled at that. "That’s true. I didn’t do anything wrong." I smirked at her. "I just got a free show." She gasped a little and hit me with a pillow from the couch. I laughed. "Now we’re even." "Not even close" she said as she ran out of the room.

  3. <Ch 4> I threw myself down on my bed and crossed my arms. What an asshole! I tried to apologize and he just made fun of me. Doesn’t he understand how embarrassing that was? Having your sibling see you naked, super awkward? I’m sure he’d change his attitude if I saw him naked. I could feel my nipple perk up a little when I hit the last ‘naked.’ What if I saw him naked? I looked down at my nipple and brushed it with my thumb. I thought for a minute trying to picture it. He wasn’t really fit. He was kind of flabby, I guess, but not fat. He was pretty tall and had wide shoulders, which I like. I tried hard to picture his dick, but had no idea what to expect. I bit my lip as I tried on different dicks for my brother. Picturing it really long made me laugh. That’s unlikely. Maybe it was wide. That would look good. It’d fit his body well. My arms dropped to my lap. I bet his balls are nice. I don’t know why, but I really liked a nice pair of balls. He seemed like his balls would be nice and round, big and full of cum. My left hand ran up my stomach and rubbed my hard nipple a little more. That’s probably right. I laid back, closed my eyes, and slid my hand under my shirt. It was a little cold, but felt good on my stomach. I bet he jacked off after seeing me the other day. He had the whole place to himself. He most certainly did. I ran my hand up to my tit and pinched my nipple. Oh yeah. He definitely jerked that thick dick of his while thinking about these tits. I reached over and played with the other nipple. They were hard when he saw them, and now they were hard for him. I opened my eyes. Woah. Should I be thinking about my brother? Is that healthy? I took a beat to think it over. I glanced down at my crotch and could nearly see the heat radiating from it. Yeah. It’s probably okay. As long as its just a fantasy. I closed my eyes again and pictured him laying on my bed. I could see him shirtless. I pulled my shirt off and lay back down. He was rubbing his chest, so I squeezed one of my breasts. I put my nipple between two things, squeezed with my hand, and pulled my hand off my breast, tugging the nipple out as it left. My brothers hands drifted down his stomach to his pants. He slowly ran his hand over his lap, so I did the same. I bent one leg up and ran my hand down my side. It was under my ass and I reached out between my legs. I pressed my palm to my crotch and rubbed it back and forth against the fabric. My brother traced the outline of his dick with his finger, so I ran my finger along the outside of my pussy. My brother moved his hands to his waist and pulled off his pants, throwing them on the floor of my bedroom. He wrapped his hand around his thick cock and gently slid it up and down. I bent my other leg and pushed my ass up off the bed. I pulled down my PJs and panties and kicked them to the floor. They landed right on top of his. I pushed my hand down between my legs and spread my fingers wide. I rubbed them along either side of my lips. We both moaned a little bit. My brother reached over and opened my night stand. He pulled out my bottle of lube. It was about 3" tall, flat on the bottom and about and inch wide. He squirted some into his hand, rubbed it all over his dick and began to stroke faster. My own hand reached for the same bottle. I opened the top and squeezed some out into my hand. An idea struck me. I wrapped my hand around the bottom of the bottle, making sure the bottle got fully covered. I spread my legs a little wider and moved the bottle down to my pussy. With my left hand I spread apart my lips and ran my finger along my pussy for a pass. I pressed the bottle to my clit and slid it down towards my opening. I could see my brother pumping harder. His breath was picking up as he thought of his sister’s naked body. I pressed the bottle into me and we both gasped a little. I pushed the bottle into me, and pulled it back out. My own rhythm matched my brother’s stroking. He sped up, I did to. He slowed down to savor it, I followed. Soon both our breaths got faster. He bit down on his lip and sped his hand up. I pushed the bottle in and let go of it. My hand flew to my clit. I spread my lips at the top and placed a finger on my clit. I rubbed away in time with my brother. I bit my lip. He opened his mouth and gasped for air. I gasped along with him. He suddenly tensed up and came. My own orgasm burst forth. My legs pulled in tight around my hand and squeezed. I pressed hard on my clit, trying to squeeze out all the pleasure I could from it. A wave washed from it up my spine to my head. My lip shook and I could see his balls quiver and drain onto my pillow. I gasped at the sight and bit at my pillow. I wanted to taste his cum, to suck it out from the pillowcase. I closed my eyes, hand still pressing against my clit, lube bottle still inside me, and fell asleep.

  4. <CH 5> After a couple hours, I flicked off the TV and went out the kitchen. My sister came back downstairs. "Oh, by the way, Mom and Dad left a note. They’ll be home around 3 and we’re supposed to go to Aunt Emily’s." I looked at the clock. It was 2. "Why didn’t you tell me earlier? That’s really soon." "You’re fine. There’s time. I was going to shower in a minute, then let you know." "You should have done that, but, now you’ve got to wait to shower" I told her and quickly ran up the stairs and into the bathroom.

  5. <CH 6> I followed him up the stairs and banged on the bathroom door. "Let me shower first! I need more time than you!" "Too late! I’m starting the water!" he answered and I could hear the shower turned on. I knew it took a few seconds to heat up. I took a deep breath and pushed the door open. "At least let me get some of my stuff," I announced when I stepped into the bathroom. My brother stood in front of the shower. He looked shocked and stunned. He was actually thinner than I expected. His shoulders were very broad, though. His legs looked strong. But most importantly, there was his dick. It looked pretty average. 6 inches or so, not as think as I thought it might be. That’s too bad. I walked over to the sink, pulled open a drawer and started to take out some things. "Don’t just stand there. I had the decency to cover up when you saw me." I said cooly. "Uh right." he said, opening the shower down and getting in. "Bye-bye." I shouted as I left. "Now we’re even" and closed the door.

  6. <CH 7> The next day, I woke up and went down to get breakfast. I got some cereal and sat myself down in front of the TV. After a couple of bowls, and some SportsCenter, I heard my sister’s door open. She came downstairs in thin, pink pajama pants and a black tank-top. It wasn’t low cut, and didn’t show off any cleavage, but it showed her nice frame. I really like the look of a woman’s shoulders, and the tank showed them nicely. The strap of her tank and her bra slide cooly over her collar bones, highlighting them beautifully. She sat down on the other end of the couch from me. "Ugh, sports? Watch something else." she said as she lunged towards me for the remote. "No. I’m watching it." I tried to keep it from her. She crawled towards me grabbing at the remote. From here, I could see down her shirt and tried to pick out her nipples. She caught where my eyes were. "Ugh! You perv. We got even yesterday. Stop looking at me like that." She smiled at me a little when she said it. She didn’t try to sit up. She might have even leaned forward a little bit more. My eyes barely moved. "Yeez, they are nice, but come on. You’re my brother. Stop being a weirdo." Her eyes moved down away from mine. "Oh look you’re getting hard. Hahaha. You’re getting turned on. Thinking about last week?" "Uh, whatever" I got up and walked up the stairs. My sister followed behind me taunting. "You want to see me naked again," she said as I got to the top of the stairs and turned around. "Did you like what you saw? Am I sexy to you?" she asked from the bottom of the stairs. She wiggled her hips a little as she said it and dropped one of the straps of her shirt off her shoulder. "Stop being a butt." I told her. "Oh yeah?" she said. My sister quickly spun around. I thought she was going to walk off into the kitchen, but instead she bent over, moved her hands to the waist of her PJs, and pulled them down. "This butt?" My eyes grew and I exhaled hard. Her ass wasn’t too firm, but it was beautifully round. It hung just a little over her dropped pants and hand. I strained to see if I could see any of her pussy peaking out between her legs. After just a second or two, that felt like minutes, she snapped her back up, pulled up her bottoms and spun back around, smirking at me. "Hmm?" she challenged me. "No this one." I said and turned around. I grabbed the back of my basketball shorts and pulled them down to show her my ass. "Check out this full moon!" She laughed. I stood back up and turned around to stick out my tongue at her. She grimaced at me and turned. Again she bent down and pulled down her pants. This time, she moved more slowly and I took in all her movements. Her hands ran up the back of her thighs. They slid over her ass checks, the pointer finger of her right hand tracing a line along her crack. She hooked her thumb in the waistband of her pants and panties. A slight pause. She bent over a little more, spreading her legs a few inches further apart as she did it. She turned her head to the right, eyeing me out of the corner of her eye. She slid her thumbs down along her ass again, taking pants and panties with her. This time I noticed she was wearing those Wonder Woman cotton panties. She took them down further than before. They came down not just enough for her ass to hang out over the top of them. This time, she pulled them down a few inches below her ass. As her panties separated from her body, I could see inside of them from behind. While I couldn’t see her pussy, I could see that her panties were wet. That was too much for me. I left the top of the stairs and walked to my room. The combination of my sister’s round ass, her juices, and the fabric of my pants sliding over my dick, I was pretty hard. I needed to cool off, this was getting pretty hot. After couple of seconds in my room, my sister came in too. "I win! You’re the chicken!" she said triumphantly. "It was a stupid game, who cares?" and I turned my back to her. "You do. You’re mad because you lost." I’m not sure why the idea came to me. I pulled my hard dick out and spun to face her. "Oh yeah. I’ve trump!" I shouted quickly. Her eyes dropped down to my dick, opened a little wider, and she flushed. She turned quickly and ran from my room. Whoops, i thought as I put my dick back in my pants. Did I go too far? She’d seen it yesterday. I was just playing the game she wanted to start. Now I made her, but before I could finish analyzing what I did, my sister burst into the room and tackled me onto my bed.

  7. <CH 8> Holy shit, my heart was going to burst through my chest. He was really hard. It looked so much bigger than when I saw it yesterday. It was still about average length, but it was pretty thick when hard. I got that right! And so veiny. I licked my lips. I hate to admit it, but I was really turned on. Seeing my brothers dick was really hot. How do I come back from him flashing me his dick? Should I show him anything? He was clearly into seeing my body. Showing off my tits wasn’t going to overcome his dick. Flashing my pussy was awkward. And I don’t think that’ll top a dick. I think I’ve lost this. Maybe I should change the game a little. I ran back into his room and I lunged at him, pushing him back onto his bed. "Ooph" he spit out as he went down. I landed half on top of him. I was mostly on my side on his bed, with my stomach pressed to his side. One arm was on his chest and I was basically straddling his left leg. I started to laugh. "Now I win." He started to laugh too. "Get off me," he whimpered out between breaths. He pushed forward his left shoulder, gently trying to throw me off him. "Fine, fine" I said. I moved my hand to push myself off of him. He took a very short breath and almost gasped.

  8. <Ch 9> Her hand moved off my chest, and rested itself right on top of my dick. It was almost perfectly placed. Her palm sat along the shaft, with my head sticking out between her thumb and pointer finger. While she pushed herself up, she put a lot of presser on it. It felt amazing. I could feel it flex under her hand. I sucked in a little air. She stopped, frozen, and looked right at me, with wide eyes. "I, uh. It, uh," I started, but I couldn’t put together any longer thoughts. All I could think about was her hand. Her eyes narrowed and she smiled devilishly. She cupped her hand a little bit. The bottom of her palm pushed off my dick. She squeezed it along the sides with her thumb and pointer finger, with the gap between them along the top of my dick. She slowly slide her hand along the length of my dick. She pressed in firmly, pushing my dick into my leg. When her finger tips reached the top of my dick, she bent in her thumb slightly. It took some pressure off my shaft, but she pressed the pad of her thumb right onto the head of my dick as she changed her hand’s motion and moved it back down my dick. My dick flexed as she pushed on the head. I took another short breath in. Once her thumb tip moved past my head, she flattened her thumb out along, pressing its length along my dick. As she reached the bottom, she used her other three fingers to rub along my balls. She opened her hand up more, rubbing the length of her fingers down my balls between my legs. Her thumb stretched out along the side of my dick, and her palm pressed against the base of my shaft. After fully stretching out her hand, she closed it again returning pressure to all sides of my dick – thumb on one side, pointer on the other, palm along the shaft, and putting pressure along the bottom of my dick by pressing it into my leg. It was amazing. She didn’t break eye contact for a few more strokes up and down my dick.

  9. <CH 10> My favorite part is the pulsing. It’s a little reward for a job well done. I like it when other guys dicks do it, but this one belonging to my brother welt way better. Listening to his sharp breathes as I adjusted and readjusted my grip told me I was doing things right. His eyes agreed. I wanted more. I broke off eye contact and licked my lips. My legs were bent under me as I was straddling his left leg. I took my hand off his dick and his wrist, leaned over and put them over his arm, moving to be on my hands and knees, hanging over his body. He still laid on his back with his arms stretched out to his dies. I leaned forward and kissed the side of his neck a couple of times. He moaned quietly. I rotated my body sideways so that my head was hovering over his lap. I put my hands on his on the waist of his shorts and looked at him for approval. His mouth hung open hungrily as he nodded just a little bit. I turned my head back and pushed down the front of his shorts, freeing his dick once again. It popped out and bumped right into the side of my nose. I started to giggle.

  10. <CH 11> As my sister pulled my dick out of pants, it hit her right in the face. The pressure from straining in my shorts, to the sudden freedom from my pants, and then to a sudden impact with her face, made my did pulse a little and spit a little more pre-cum. My sister arched her back and stretched away from my dick. She put her head down and began laughing. I smiled a little, and was about to speak out to her, when she stopped laughing. She picked her head back up and glanced at me out of the corner of her eye. She leaned her weight forward away and moved her hands to my dick. She took her left hand and slid it under my balls. They rested on her fingers, and she wiggled them a little bit underneath them. They bounced a little bit, being rocked back-and-forth by her fingers. Every so often, she stopped wiggling her fingers and stretched out her middle finger along the base of my balls, rubbing down the length of it gently. With her right hand, she tried to wrap her thumb and pointer finger around the very bottom of my dick, but couldn’t quick reach her hand around it. She licked her lips and turned her head. She smiled at me. I smiled back. In one quick motion she turned her head, closed her eyes, opened wide and took my dick in her mouth.

Comments are closed.