Walking in on Big Bro
by Xavier L

This is a fictional story containing sex between a teen and his preteen brother. If you have a hard time separating fantasy from reality, or if this theme turns you off, you shouldn't continue reading.

If you are interested in my other stories, you can find them listed in the Authors section under XavierL at http://www.nifty.org/nifty/eprolific.html#xavierl or at ftp://ftp.asstr.org/pub/Authors/XavierL/.

If you have ideas or fantasies you’d like to see turned into stories, feel free to email me.  

Please email me with if you'd like to be notified when there are new stories or updates to existing ones at xavier.stories@gmail.com.  Make sure to tell me which list(s) you would like to be included on (gay and/or str8/bi).  You can also find me on Twitter: @XavierStories2.

My 15-year-old brother Owen and I share a bedroom. I’ve walked on him doing different kinds of things before, like smoking marijuana, drinking alcohol, or . . . well, jacking off. So I wasn’t very surprised when I walked in and saw him doing that again. He was sitting on his bed, his gray sweats and colorful boxers shoved down. He had a magazine in one hand while the other was busy going up and down on his hard penis.

He looked up quickly when the door opened. When he saw it was me, he hesitated before going back to what he was doing. I made for my bed when he stopped me. “Hey Clark, wanna do me a big favor?”

“Sure!”

“Come over here and help me out.” He scooted over so I could sit on the bed next to him. “See what I’m doing with my dick? Do me a favor and do it for me. It will feel better if it’s someone else’s hand.”

Okay this was a bit weird, but I figured why not. I took hold of his big, hard dick and stroked it up and down like he had been.

“Yeah, that’s nice. Keep doing that.” He wiped his hand off on the blanket and started slowly flipping through the pages. I’m 10 so shouldn’t be looking at those pics, but they were right there in front of my face.

As he slowly browsed, I noticed him staring hard at a picture of a lady with a guy’s huge dick in her mouth. I noticed him biting his lip as I stroked him and he looked at the woman. I figured he really liked that so why not do it for him. I shifted my position somewhat, and I lowered my head and put his dick in my mouth.

“Oh fucking hell!” he breathed as I lowered my mouth onto his hard penis. It tasted a bit salty, and it kind of felt good inside my mouth. I know that should probably sound gross, but it was fun. He was making so much more noise when I was sucking him than when I was using my hands that it made it totally worthwhile.

When he shoved his sweats down further and spread his legs, I started putting more of his dick in my mouth. I also began lightly massaging his balls. I enjoyed how they felt heavy in my hand, and the fuzz felt really cool. Soon after his hand was on my head pushing it down, and I tried to get more of his dick into my mouth like the lady was doing in the photos.

“Yeah, Clark. Suck my fuckin’ cock!” he said as his hand picked up speed. I noticed that he pulled his T-shirt off, and I enjoyed rubbing my hand against the muscles in his tummy. His hips were now moving up and down so that he was humping my mouth while I sucked him. “Oh gawd! Don’t stop, man. Keep sucking!”

I worked his cock eagerly, responding to his increased lust. Soon he was making me gag as his thick dick plunged into my throat. I finally grabbed onto his legs as his pumping increased, and within moments he was holding my head down as his cock started pumping salty liquid into my mouth. I just kept sucking, and I heard him hiss “Yessss! Fuck yes, man!”

I continued sucking until he told me to stop. Then, because I was curious, I sucked on his balls for a bit.

“What made you think to put it in your mouth? That was awesome!”

“The picture of the girl doing it.”

“Dude, you were fucking awesome! You rock, little bro!” he tousled my hair before pulling up his sweats and heading to the bathroom.

At night he went to bed naked because he asked me to blow him again. It was kind of fun being in his bed with him while he was naked, and this time I lay between his outstretched legs.

In the morning, I woke up first. I went to the bathroom, and I was at the sink brushing my teeth as he walked in. His hard dick bounced as he moved. He came up behind me and gave me a big squeeze. “You sleep well?” I nodded my head. “I sure did after your great dick sucking job. You like blowing your big brother’s cock?” Again, I nodded my head. “Good,” he said.

I stood frozen as his hand slid down my belly and into my pajamas. I felt his fingers on my dick briefly before he pushed my bottoms down. He put his hard dick in my butt crack and slowly moved while he played with my growing cock.

After a bit, he said, “I’m gonna pee. Don’t move.” I remained as he left me while he took a piss. When he came back over to me, he asked, “You want to have some naked fun?”

“Sure!” I said.

He grabbed a towel and guided me to his bed. He placed the towel on the bed and spread it out. I watched him grab some liquid and squirt it on his cock. “Lay down on your stomach,” he said.

I was very curious about what he had in mind, but I went and did what he asked. He got on top of me, and I could feel him sliding his dick in my crack. He moved it back and forth between my cheeks for a bit before telling me to put my legs together. When I did, he slid his dick between my thighs and began slowly humping my legs.

It felt a little weird, but I did like feeling him move up and down against me, our naked warm skin touching each other. After a while of doing this, he turned me over. He grabbed both of our dicks and rubbed them together in his hand. I started humping his hand like he was doing, and it felt so good.

Eventually he had me put my legs together again, and he went back to humping my thighs. His body covered mine, and he surprised me by kissing my face. Soon, though, he had his tongue in my mouth. He was kissing me like he did his girlfriends. After several moments, he moved his lips to my ear. He gently bit the lobe before saying, “You’ll do anything I say, won’t you, Clark?”

I was so caught up in the heat of everything I nodded my head.

“I want to hear you say it.”

“I’ll do anything with you, Owen.”

We kissed again for several moments before he got off me. He grabbed part of the towel and wiped his dick off with it. “Finish me off with your mouth, bro.”

I gladly sucked his dick and swallowed his cum. It didn’t take long before he was shooting down my throat this time. “We’re doing to have some serious fun tonight,” he said after pulling his dick out of my mouth.

I watched him get dressed and leave our room. My head felt a little dizzy so it took me a bit before I did the same.

All day I wondered what we were going to do that night. Things were definitely different during the day. Sometimes his hands would be down my shorts playing with my dick, or he had mine down his. Several times he came up behind me and began rubbing my butt.

When bedtime finally came, he decided to join me even though he usually went to bed much later. When we got into our room, he turned on some music at a light volume. He had me sit down, and I watched him kneel. He removed my shoes and socks before moving between my legs. We tongue kissed again, and as we did, I felt him pull my shirt up and off.

As we kissed, his hand rubbed my dick until it was hard. Then he slowly removed my shorts and briefs. When I was naked, he pushed my chest so that I lay backward. He shoved my legs apart, and I felt his mouth on my sac. He briefly sucked on my balls before moving to my dick. I writhed as he blew me. Then he shocked me by lifting my legs and pushing them to my sides. “Hold behind your knees,” he said.

He pushed my legs up more as I grabbed them, and I had a huge surprise when his face moved into my crack, and he began licking my hole! I bit my lip to keep from crying out, and I watched his head move, his blue eyes occasionally looking up at me as he worked my butthole.

When I thought I might pass out from the feeling, he stopped. I sat up as he stood and began undressing. I watched his every movement and grinned every time more skin appeared as he slowly stripped for me.

By the time he got his underwear off, his dick was rock hard, and it bounced as it was freed from his boxers. I watched him once again pour liquid on his cock. He rubbed it up and down his thick meat. “Grab your legs again,” he said. I rolled onto my back and grabbed my knees. He put his finger inside my hole and rubbed some of the liquid into it.

We kissed some more before he whispered into my air: “I want inside that hot ass, Clark. Turn over and give it to me.”

I figured he was going to kiss my bum hole some more, so I eagerly rolled over and stuck my butt into the air. 

“That’s a good boy,” he said. He got behind me, and I could feel his dick poking my butt. Soon it slid into my crack, and I figured out what he meant. He planned on putting his cock into my ass! I felt him enter me. “Fuck yeah! Tighter than I thought!”

I took a mouthful of blanket as his thick meat pushed into me.