The Bigger Step Brother Pt. 01

Story Info
He may be younger but my GF finds out he's bigger.
4.5k words
4.17
137.6k
120

Part 1 of the 2 part series

Updated 10/30/2022
Created 08/31/2014
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My name is Alan.

It was my senior year in high school and I was already 19 because I got held back a year when I was a kid. I was a typical high schooler, I played sports (tennis and swimming), I had great times with my friends, and, of course, I couldn't keep my eyes off the girls. Unfortunately, nature wasn't that kind to me: after my last growth spurt, I was still only 5'5. I knew there was nothing I could do about it, and I always joked that God took away some of my height to make me hotter. Which isn't far from the truth, I was definitely one of the better looking kids in our class, and there was never really a time where at least one girl didn't have a crush on me.

All that, and I was single until my senior year, a 19-year-old virgin... Why is that? Well, let's just say I had another, erm, deficiency. I had never in my life showered in the locker room at school, but I had seen other guys do it. It made me very self-conscious; why the hell was everyone else so much bigger than me? Well, I was cocky, so I never admitted I was small. I always told myself I had a nice dick and the girls would love it. This is the story of how that myth of mine got shattered.

She was my first real girlfriend; Adriana. She was 18 years old and at 5'5 she was my height. She had full, straight brunette hair that fell just below her shoulders, with the brownest eyes you could ever find and a smile that would make any guy melt. Add to that, 36C breasts, a flat (not skinny) tummy, muscular thighs, and an ass to DIE for.

She was the biggest self-esteem boost I ever had and it came about a week earlier when she rubbed my dick over my pants while we were making out. When she made no comment and just kept rubbing and kissing, I knew she was okay with my size. Today however, the same girl who gave me that self-esteem was about play a role in shattering it.

We were in my room, cuddling on my bed. Our hands were getting very exploratory on each other. We were feeling up every square inch of our bodies with occasional pecks on the lips. It's probably a good time to mention that I live under the same roof as my younger step-brother, like Adriana he was 18 at the time. He and my step-dad are of Arab/Middle Eastern origin with the dark hair, and tanned olive skin. I was jealous of 6'1 height, but always told myself that I was hotter anyways. Our two bedrooms were connected by a common bathroom. It's a small bathroom and so the closet where we store towels and other accessories is actually on the wall inside my room.

There's a clear view of the bathroom door from my bed but I wasn't thinking of that; I was too busy caressing Adriana's body. Her breasts were more than a handful, and nothing felt better than rubbing my hands between her thighs. I was a champ! I was making her moan with my hands on her skin and I knew she wanted me. Her hands kept rubbing my swimmer body's abs and squeezing my tight butt. I was heaven. So much so, that I neither heard the shower turn on, nor the bathroom door open. But apparently Adriana did. She stopped the full body pat down and turned her head in the direction of the bathroom.

She gave a little yelp, "Eek!"

That's when I realized my brother had walked in and I thought she was just embarrassed that we walked in on is. Boy was I wrong.

"Oh shit! My bad guys, I didn't realize ya'll were in here!" I heard Nizar say.

"No biggie!" I begin to say as I turn my head in his direction, "We were just WHAT THE FUCK DUDE!"

There he was, standing stark naked at the door to our bathroom. My eyes went from his face straight to his dick. Hanging between his muscular thighs was a dick at least 8 inches in length, but still completely soft.

This had to be a dream; no, a nightmare. My nerdy younger step-brother is standing naked in front of my first real girlfriend, and his flaccid dick is not only twice as long as my erect one, but thicker too.

"I just need to grab a towel real quick," he said.

Real quick my ass! He took his sweet time and didn't even TRY to cover his junk.

"Sorry again guys, carry on!" he laughed as he gave Adriana a playful wink.

I was so shocked at what had happened, I had forgotten Adriana was even in the room. I looked at her and her mouth was open; her eyes staring straight into his junk I thought she was going to burn a hole right through them.

He stepped back into the bathroom and shut the door. There was almost 10 seconds of silence after that, the only sound being the sound of the shower head running behind the bathroom door; the same door Adriana's eyes were still glued to.

"Ummm..." I stammered breaking the silence, "That was... I'm sorry... He was just..." I had no idea what I was saying, or what I even wanted to say.

"Never mind," she stopped me, "Just forget about it." She stood up and walked towards my desk chair and sat down.

Really? Was that it? No harm done?! This is too good to be true! I got up and followed her. I sat on the arm of the chair and put one of my arms around her shoulders. I was ready for a hug, but what I got instead was a pair of cold, motionless shoulders. So I tried to slip my hand between her arm and her chest, but she pulled back.

"Not now, Alan," she said plainly.

"Oh come on, A.D.!" I said trying to comfort her, "He didn't mean to walk in on us! I'm sure he didn't see us making out!"

She turned her head to look me in the eyes. "No," she said coldly, "not that, it's just... never mind. And stop calling me A.D."

I was confused as hell at this point. "Oh come on, baby, I always call you A.D."

"Yeah, and I hate it. So stop."

That got me a little angry, "What's wrong with you?" I asked.

"Nothing, just forget it, okay?"

I stood there, staring into the back of her head for a few seconds. I then reached down and placed my hands on her hips.

At that, she jumped out of the chair, "I said stop! I'm not in the mood, okay?"

I couldn't take it anymore, "Why the hell not?" I demanded.

"I told you just forget about it!"

"I already did forget about it. Now it's your turn! YOU forget about it, too!" I almost yelled.

"Well, sorry Alan, but I can't!" She snapped back.

There was a few seconds of silence. I knew she had regretted saying that.

"What?" I asked in a raspy whisper.

She looked down at her feet and turned away. "Nothing. Just... nothing."

"What do you mean you can't forget about it?" I asked stupidly.

"Alan, please drop it."

"NO!" I shouted, "Tell me what you meant by that."

She turned to look me in the eye, "Are we seriously fighting over this?"

She was angry, but so was I. I should've listened to her and dropped it like she said, but I didn't. Instead, I yelled again, "YES! We're going to fight about this!"

I crossed the line. After a second of silence, she took a step towards me and looked me straight in eye. "You want to know why I can't forget about it? Isn't it obvious, dumbass? It's not every day that a girl sees a dick that fucking big."

I was stunned. I was pissed, but I deserved it and I knew it. But there was something else I was feeling. I had an erection; I was harder than I had ever been that day. What the hell was going on? Angry and horny, I had to think of something, I wasn't going to just let her get away with saying that to my face.

"Yeah? I saw you couldn't keep your eyes off him! That's way worse than when you thought I was staring at Jessica's boobs!"

She kept her stare for a few more seconds, then with a quick turn of her body *SLAP!*

"Asshole!" she spat.

She turned around grabbed her purse off my desk and marched out of my room. And there I was, standing there, rubbing my cheek, both more angry and more horny than I had ever been in life.

***

We didn't talk again that night. No phone calls, no texts, nothing. At school the next day, things were a little bit awkward. We were both trying to act like nothing happened, but it wasn't working for either of us. In between our fake smiles and jokes, we had short bouts and arguments about the stupidest things. Before the day's classes were over, we agreed she was coming over again that night.

Later on, we were sitting on the same bed we were on last night when the craziness happened. We had my laptop out catching up with the latest episodes of True Blood when there was a knock on my door.

We both turned our heads and saw Nizar peek his head in, "Hey Alan, mom wants you to watch the dishes tonight."

Really? He's going to do that? "Why don't you do it?" I snapped at him.

"Because I'm going to be in my room listening to the new Lupe Album," he smiled, "See ya, twerp!"

Did my little brother just call me a twerp? "Ass!" I muttered as Nizar shut the door again. I hit play again on my laptop. Then, surprisingly, Adriana paused the video again.

"Don't you need to go do the dishes now?"

Really? She was going to boss me around, too? Oh, hell no! "I'll do it later!" I said and hit play again.

This time, Adriana shut my laptop lid and placed it on the floor by my bed. I looked at her like I didn't know who she was.

Then suddenly, she jumped on me. Before I knew it my lips were pressed up against hers, her hands grabbing hold of my hair. Wow this was passionate. I didn't know where this came from or why, but I wasn't going to complain. I placed my hands around her shoulders and returned the kiss.

We sat next to each other for a few seconds, kissing, when I felt her tongue trying to make its way into my mouth. I parted my lips a little and her tongue came powering in. I had never been kissed so hard before, it was amazing. Our tongues danced with one another for a little more until I tried to push her down so I could lie on top of her, but she resisted, pushing me back harder than I had ever felt her push.

She broke the kiss and whispered into my ears, "No Alan, Adriana's on top." Something was different, I didn't know what. I normally wouldn't have minded, but the way she said it so commandingly made not want to let her be on top. I tried to resist some more, but she just pushed me down onto my back like I was doll. Was she always this much stronger than me?

Before my back hit the bed, her tongue was back in my mouth again, her hands were grabbing either side of my head. I was pinned underneath her powerful, sexy body and had my hands wrapped around her waist. I felt like I had no control of the situation, but for some reason, that turned me on even more.

Slowly during the make out, I moved my right hand up her side towards her breasts. Right before I managed to touch her, her left hand came swooping down, knocking my hand out of the way.

She broke the kiss again just long enough to give me an order, "No touchie!"

What was that about? I've always fondled her before, why not now? So I placed my hands back on her waist and started to move them down towards her amazing ass. Nothing felt better than grabbing Adriana's ass.

To my surprise, she broke the kiss off again. This time she grabbed both my hands and lifted them up over my head.

"What did I say?" She demanded, still lying on top of me while holding my hands above my head.

I was confused, but I didn't want to ruin the moment. I thought she was being kinky, so I decided to play along.

"Prrrow!" I growled at her, "Yes mistress!"

"Good lil boy," she smiled.

Lil boy? Did she really just call me that? More importantly, did that really just turn me on so much more???

She then took both of my hands into one of hers and held on tightly. She turned her body a little so that she was half on the bed and half on my body. With her other hand, she moved down to my khaki shorts and began to rub the insides of my thighs over them.

I gave out a light moan.

"You like that, don't you?" she asked, while smiling devilishly at me.

"Oh yes baby!" I gasped, losing my breath because of her touch.

Her hand became slightly more aggressive, and was now rubbing my erection over the shorts. I noticed my erection was not even as long as her hand, but I didn't care at that point. I didn't care about anything at all.

Her hand began to rub even faster and harder on my shorts-covered hard on. I couldn't help myself, if she kept this up, something was going to happen. I squirmed trying to get lose, but her grip on my hands was too strong.

"Oh no you don't!" she purred, "You're not going anywhere. You're going to cum for me."

This could not be happening. A hand job OVER my shorts, and I was about to cum. What's worse? She knew it was coming to.

"Cum for me, Alan," she whispered in my ear, "Just let it out, you're not going to last much longer."

Her breath on ears sent shivers down my spine. I was about to explode in my pants.

"Do it, Alan! Cum for me!" she kept whispering, "Show me how that little dick of yours cums!"

That was it. My whole body tensed up and began to shake. I didn't care about the situation anymore, I needed this release. My hips jerked upwards into her hands a few times, and then my whole body fell limp.

She sat up a bit, taking her weight off my body. I laid there gasping for breath. After a few deep breaths, I looked at Adriana and say her smiling at my crotch. I looked down, and saw the 2 inch cum stain on my shorts.

"At least you don't make a big mess!" she giggled, "You can barely even notice the stain!"

Was that an insult? I was still in those few minutes of "orgasm hangover" to know or care. She jumped off the bed and started walking towards the door.

"Where are you going?" I sat up and asked.

"You have to go do the dishes remember? I'll be in Nizar's room listening to the Lupe Fiasco album with him. You know much I love Lupe!"

She practically skipped out the door leaving me there by myself. I started walking downstairs to go do the dishes.

Did she really say "Show me how that little dick of yours cums!"???

***

About thirty minutes later, I didn't even remember doing the dishes. My thoughts were everywhere; the amazing make out session we had, the fact that Adriana was stronger than me, how she made me cum in my pants, her little dick comment. As I walking back upstairs, it suddenly struck me that Adriana had spent the last thirty minutes in my step-brother's room. Oh God. Was she still not able to forget about what she saw last night???

I quickly put that thought out of my mind. I couldn't blame her really, I could still picture Nizar's heavy dick just hanging between his legs.

No. No way. That memory was NOT turning me. What the hell was happening? 24 hours ago, I was the happiest guy alive, and now my whole world had turned upside down. Everything I thought I was sure of was not a hurricane of confused thoughts.

I got to my room and sat down, still lost in thought. I suddenly jumped up when I remembered again that Adriana was in next room over. When I got to Nizar's room, I saw that the door was slightly open and heard the steady hip hop of Lupe Fiasco blasting through it.

I opened it a little and what I saw made me stop dead in my tacks.

There was my girlfriend, sitting on her knees in front of my younger step brother. He was sitting in his swivel chair with pants at his ankles while looking at Adriana. His hands were grabbing her full dark hair while her hands were grabbing the longest, thickest shaft I had ever seen. With both her hands on Nizar's dick, her lips were wrapped around his shaft. She was moving her head up and down in beat with the music while her eyes were staring up directly into his.

I wanted to scream, but couldn't my whole body was rigid. They were both so deep into the blowjob that a gunshot could've sounded and they wouldn't have noticed.

Her mouth was stretched open to the widest I'd ever seen and the fingers on one of her hands weren't even able to wrap around the whole shaft. She was stroking him with both her hands around the bottom half of his dick while her mouth was deepthroating the top half.

She pulled her head off his dick with a loud slurping sound and gave the sexiest moan I'd ever heard her give.

"I still can't believe you're this fucking big," she gasped.

She began to lick his shaft starting from his balls and working her way up. His dick was taller than her whole head and it seemed like her tongue would never reach the tip. When she finally did, she gave it a flick with her tongue and giggled. With that flick I saw Nizar give a shudder.

"Oh God, I'm going to cum soon, Adriana!" he breathed.

Adriana leaned in closer and sped her strokes up so fast that her hands were almost a blur.

"Finally, big boy!" she purred, "I didn't know a guy could last this long."

She stretched her mouth again over his massive head and began to suck loudly. After a few more strokes, she pulled his dick out again with another loud slurping noise and gasped heavily, "I want it all in my mouth, you fucking stud!"

As she plunged back down onto his massive dick, I realized that my right hand was in pants stroking. I had been standing there for at least five minutes. How long had my hand been in my pants? I didn't know, but I knew that if I didn't stop, I was going to cum before Nizar did.

I ran back into my room and jumped onto my bed. Laying face down with my hands over my head pulling my hair; my head was spinning and my dick was harder than it had ever been in my entire life. Was I just jacking off to my girlfriend giving my younger step brother head?

A few minutes passed when I hear my door open. I made up mind to pretend like I didn't see or know anything.

"Hey Adriana! Did you like the new CD?" I asked, trying to sound casual.

I saw her make a straight line towards me with a huge grin on her face. She came straight for me and began to undo my shorts.

"Whoah! What's going on, baby?!" I asked. I was confused. We had never been naked in front of each other before. What on Earth was happening?

She didn't reply. I don't know why, but I tried to stop her. Again, she overpowered me. Without saying a word or opening her mouth, she moved my hands out of the way and finished the task at hand. Before I knew it, my pants and boxers were at my feet and she was standing in front of me, smiling down at my erection. I looked down too and couldn't help but remember Nizar's dick. I felt like a baby house cat comparing myself to an adult tiger.

She then took a step towards me and began to push me on to the bed. She still had not said a single word or even opened her mouth. Her push was so powerful, I didn't even try to resist.

Adriana pushed me onto the bed and laid on top of me. She was fully clothed and I was naked from the waist down. Then, she began to kiss me.

The last past 24 hours had been the most confusing of my life, and I wasn't going to pretend like I knew what was going on, so I just let it happen; I began to kiss her back. She kept kissing me closed-mouthed for a while until I couldn't help it any more. I began to stick my tongue out, trying to get an open mouthed kiss.

She then grabbed my hair and, twisting my head roughly, let my tongue into her mouth. It felt warm, more wet than normal, and... salty? The next thing I knew, her whole mouth was open over mine and I felt a gush of warm, thick liquid flow out of her mouth and into mine.

I knew what it was.

Before I had a chance to resist or spit it out. I felt one of her hands come clamping down onto my mouth. I gagged but couldn't lose the grip she had over me.

She looked into my eyes and grinned.

"You like the taste don't you, lil boy?" she asked.

I wanted to yell out "Hell no!" but I couldn't. Besides, based on how much harder my erection just got, it would have been a lie. I mumbled something completely unintelligible into her hand.

"What's that?" Adriana purred, "You like it? Then why don't you swallow it?"

I struggled but she was too strong for me.

"Having trouble swallowing such a huge load? I know, I swallowed that much three times before I was able to keep all that in my mouth," she told me, "Here, let me help you swallow!"

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