My Little Sister’s Boobs

I’m 65 now and I have a VERY loving wife. That said, I read an excellent story here the other day that reminded me of one from the early days of the Internet. I’ve searched for that old story a few times over the years, but never found it, so what follows is a plagiaristic take on a distant memory. All I could really recall was the basic plot, so I’ve taken quite a few liberties with the details. I hope the original author wouldn’t mind. As they say, imitation is the sincerest form of flattery.

========================

My Little Sister’s Boobs

========================

“What’s wrong, Susie?”

My sister was obviously distressed. I can’t say we were close or that I even normally paid her much attention, but I could tell that she’d been feeling bad about something lately, and because we were in private, in my room with the door closed, I took the opportunity to be a good big brother.

“Oh nothing,” she replied in a forlorn voice.

“You can tell me, Susie. I know you’ve been feeling down. I’m your brother, and I can tell when something’s wrong.”

She looked me in the eyes for a few seconds, and her expression made me sad.

“I don’t want to get into it, Mark. I appreciate your concern, I really do, but you wouldn’t understand.”

Well, I never had to be much of a brother before that day, but after seeing the obvious pain she was in I couldn’t simply drop it.

“Susie, it’s just you, me and Mom now. Neither of us has a father to talk to anymore, so I’m the closest thing you have to a man who loves you, and I want you to tell me what’s bothering you.”

Just then, a tear ran down her cheek and her lower lip trembled.

“I have no boobs!” she blurted out.

And with that, Susie began to sob.

The way she said it made me so sad, I stifled a sob of my own and sat next to her on the bed, putting my arm around her and gently pulling her close.

“Girl, you don’t need big boobs. And anyway, you’re too young for boobs!”

“No I’m not!” she shot back with a quick turn of her head, looking up at me. “Giselle has boobs. She’s had them for almost six months, and they’re getting bigger and bigger. Yet I can’t even wear a training bra!”

Susie’s lip was still trembling, but I couldn’t argue with her about Giselle. That girl was a budding knockout. You could just tell she was going to be a major babe in a few short years.

“Well, everyone matures at different rates,” I said as soothingly as I could. “You’ll grow boobs, I promise. It’s just a matter of when and how big, and so *what* if they don’t grow as big as Giselle’s? Maybe you’re meant to have *small* boobs. If so, that’s no big deal, many guys like small ones.”

None of what I said seemed to make Susie feel any better.

“Mark, do you think I don’t know that boys like girls with boobs? All the guys in school want to be with Giselle, and no guy has even tried to be with me. She already has a boyfriend, and as a matter of fact she’s had him as a boyfriend since right when her boobs started growing.”

I admit it, my dick stirred a little at the thought of hooking up with a girl right when her breasts started developing and then getting to watch them grow. Especially a girl as pretty as Giselle…

Susie was pretty, too, by the way. Actually very pretty, I thought, but maybe I was biased since she’s my sister. She had a fresh happy face – well, happy until recently – with a few freckles, big brown eyes, a beautiful smile, super pretty teeth, and a nice slim young body. She just didn’t have “curves” like Giselle.

“Mark, Giselle has been having sex with her boyfriend for all this time. I’ve never even kissed a boy!”

“Oh, you’ll get a boyfriend someday. Don’t rush things!” was all I could think to say.

She sat there staring at the floor. I could tell she was holding something in. Something pretty important.

“Mark, when I said Giselle has ‘sex’ with her boyfriend, it’s not exactly that. She’s still a virgin, but she gives him blowjobs.”

I was in shock that Susie even knew what a blowjob was. Where did she learn that? I hadn’t even had a blowjob yet! Oh well, I guess I knew some things about sex when I was her age. I tried to console my sister, but the thought of Giselle giving blowjobs pierced my mind, and an image of her sucking *my* cock soon followed.

“And Mark? She swallows his cum.”

…

Whoa. [Give me a second to catch my breath.]

Giselle swallows…

Oh my God!

But my little sister knows about this kind of stuff already?

“And I think that’s what’s making her boobs grow.”

========================

I was in the shower the next day, stroking my morning wood as usual. With my eyes closed, the water spraying my face and chest, I was thinking about Giselle and imagining her on her knees with my dick in her mouth. It didn’t take long before a wave of pleasure overcame me and a spasming ejaculation ensued, my cum literally gushing as I pictured Giselle sucking it out of me and drinking it down. I came so hard I had to steady myself against the glass door until I was able to recover. I finished my shower as usual, wiping the cum off the wall before turning off the water and opening the door.

“Susie! What are you doing in here???”

She was sitting on the closed toilet seat, facing the shower door, and I caught her staring at my cock before quickly looking away.

“I’m sorry, Mark! Please forgive me!”

I could see her face turning redder by the second. I grabbed a towel and wrapped it around my waist to cover myself.

“Well, answer the question. What the heck are you doing in here?”

Susie and I shared a bathroom with doors adjoining each of our bedrooms, but she had never come in while I was in it, and she certainly never snuck in to watch me in the shower!

“I wanted to see you jack off,” she softly responded, her face still turned away.

“What??? You saw that?”

Her eyes met mine and in a quiet voice, almost a whisper, she replied.

“Yes.”

How embarrassing! My own sister saw me beat my meat and squirt cum all over the shower wall!

It took me a few seconds to compose myself.

“But what made you think I’d be doing that in the shower?”

“Well, you always take long showers and I kind of guessed that was the reason,” was her sheepish response.

That hit me like a ton of bricks. My little sister *guessed* that I was jerking off in the shower, and actually saw me do it!

“I don’t know what to say, Susie. I’m sorry you had to see that.”

“I didn’t *have* to see it, Mark. I wanted to, and I’m glad I did.”

“Why?” I asked. “Why would you want to see your own brother jacking off?”

This was getting really weird.

“Mark, when I told you that Giselle gives her boyfriend blowjobs and swallows his cum, and that I think that’s what’s causing her boobs to grow, I was serious. I’ve read that semen has many sorts of proteins and hormones and other unique ingredients, and I want to try some to see if it’ll help mine grow.”

I was dumbstruck.

“You read about semen?”

“Yes, and I want to try some. I don’t have a boyfriend, obviously, and I don’t really even want a boyfriend, so you’re the only person I can think of who’d be able to give me some. Would you, Mark? Please?”

My sister was staring intently into my eyes, pleading with me to provide her with cum…

“Well, how could I possibly do that, Susie? You’re my sister!”

“Maybe you could jack off into a cup instead of spraying it on the wall. Then you could leave the cup for me here in the bathroom and I could try it like that. Would that be okay?”

There I was, in nothing but a towel, dripping water on the floor and discussing the sharing of my cum with my sister! It was almost too bizarre, but the innocent look on her face and her begging puppy dog eyes were melting my resistance. I needed to put an end to the conversation before I might do something really stupid.

“I’ll have to think about it, Susie. Don’t come in here and watch me tomorrow, but if I decide to do it, I’ll leave the cup right here on the sink.”

========================

I spent all day considering Susie’s request. Could I do it? Sure. I jerked off several times a day anyway, and it would be easy enough to do it in a cup. But should I? Should I let my sister taste my cum? How weird is that!

That night, as I lay in bed after masturbating to my last orgasm of the day, I drifted off to sleep, still unsure about what to do.

========================

I woke up early the next morning and, as usual, my dick was hard. I could feel the pulse throbbing in my balls and a wet stain had already formed in my underwear. Without a second thought, I pulled it out and wrapped my fingers around it, stroking lightly at first, then gradually picking up the pace. Visions of girls sucking me off were drifting in my head. Giselle, girls from school, girls from magazines. My orgasm was building and my balls were tightening, and just as I was about to cum I grabbed the paper cup from my nightstand, stood up, aimed my cock, closed my eyes, and shot rope after rope into the cup before my spasms subsided.