“Just so you know, my nipples are super sensitive,” Elayne said with a grin. “As for rules–”
She cut off with a hiss of pleasure as I gently tweaked the nipple I had access to through her shirt to test what she’d said. The sound was music to my ears and caused my cock to only get harder than it already was.
“As for the rules,” she began again, giving me a playfully stern look. “I think the only things that matter are that we’re both comfortable and having a good time and that our parents never find out what we’re doing. This is very much an experiment, so we’ll just have to try things out and see where it goes.”
“That sounds good to me,” I replied, only half paying attention as I continued to grope her.
“Someone sure seems to be enjoying themself,” she said with an amused chuckle. “Can I take this to mean you’re a boobs-over-ass guy, then?”
I nodded fervently. “Very much so, and especially when they’re as incredible looking as yours are.”
“And how would you know what your sister’s tits look like?” she asked, giving me a curious but not upset look.
I could feel my face burning as I desperately attempted to explain. “I… might have snuck a peek at you last night, after dinner, when you were enjoying yourself in the bathroom. The door was cracked slightly open.”
“Oh.” Elayne’s cheeks flushed a pretty pink before she bit her lower lip, and then let it pop back out of her mouth. “Want to see them again, only much, much closer this time?”
“Yes. Please.” My response was immediate, and I would have been embarrassed at the speed if I hadn’t been so incredibly turned on.
She shifted slightly, her upper body rising upwards off the bed and causing the sheets to pool at her waist. “There’s only one little problem. I’m not wearing anything at all under this shirt, so if I take it off, I’ll be completely naked. Is that okay with you?”
I swear my brain nearly short-circuited. “I… I’m okay with that, as long as you are,” I stammered, my eyes locked onto the two tents in her shirt. I could easily make out her nipples. Were we really doing this? Was she actually about to strip naked?
Elayne’s hands briefly disappeared under the sheets–her arms crossing in an x–before coming back into view with the hem of her shirt gripped in her fingers. She hesitated for a moment once she reached her stomach before, in one swift, smooth motion, she peeled the shirt off and let it drop on the floor.
At that moment, I knew that I would never forget the sight before me. Her breasts were just as I remembered them from last night, firm, pert, and standing proudly out from her chest without even the slightest hint of sag. Crowning each of them like a diamond, her nipples poked out, veritably begging to be sucked on. And I couldn’t resist their call.
I lunged forward, nearly tackling my sister–her crystalline laughter filling my ears. We landed with me on top of her, but in such a way that one of her thighs was pressed against my cock while one of mine was nestled in her crotch as I ended up straddling her leg. I only even vaguely noticed the position since it was providing my cock a nice surface to grind against because the rest of my attention was entirely focused on the nipple that was now in my mouth.
Swirling my tongue around it, I sucked and was immediately rewarded with a moan from my sister’s lips. Her hand slid into my hair, gripping it and pulling me tighter against her. Encouraged, I continued to suck away, one of my hands finding her other breast so that it wasn’t left out of the party. In response, Elayne clapped her other hand over her mouth as she let out another cry of pleasure. Given our parents’ room was right down the hall, I appreciated her efforts to not get us caught.
Not wanting to leave her other nipple to just my fingers, I reluctantly let the one I was currently sucking on slip free, before quickly moving my head over to latch on to the other one. Once again, I used my fingers to make sure the first wasn’t left out, and this time with my spit still coating it I was able to make her cry out even louder. At the same time, we were both grinding together under the sheets and my dick was making it painfully clear that I was getting incredibly close to coating the inside of my boxers for the second time in a single day. Not that I was going to let that stop me, although a part of me wished that I’d also stripped down.
“Fuck, are you actually going to make me cum from just my nipples alone?” my sister gasped from between her fingers. “I’ve never been able to do that on my own.”
A sense of pride filled me, and I redoubled my efforts, desperately wanting to make her orgasm now. I continued to shift my mouth back and forth between her tits, sucking and slurping, nipping and twisting to my heart’s content. The whole situation was so incredibly wrong and yet so incredibly right. It didn’t matter that it was my sister’s nipples I was devouring, because anything that felt this fucking good couldn’t be a bad thing.
It wasn’t much longer before I felt Elayne’s entire body tense under me–her thigh digging painfully into my dick–with both of her hands now clamped over her mouth to muffle her deliciously sexy noises. Unable to contain my own pleasure, my cock throbbed hard once before yet again exploding inside my pants. I collapsed at her side, both of us gasping for air in the aftermath of our shared orgasms.
“So fucking good…” she murmured, almost sounding like she was in a daze.
My sister’s tits were a bright red, her nipples swollen from all the attention I’d given them and completely covered in my spit. It was ridiculously hot, and something I’d certainly never expected to see, much less to do her. That thought consumed me, forcing me to acknowledge exactly what I’d just done. And while I didn’t regret it, and I’d enjoyed it immensely, it nevertheless forced me to question if it should have happened at all.
While I was almost positive the answer to that question was a definitive yes, I felt like I needed a moment alone to truly come to terms with where this bold new path we were walking down together was leading. “This was amazing, and I love this new thing between us, but I also need some time to process what the fuck we just did. I’m sorry.”
Elayne shook her head–her eyes full to the brim with affection–clearly not upset in the least. “Don’t apologize. But you could always stay here, you know. Sleep with me.” She winked.
My mouth went dry as I briefly considered the offer before shaking my head in denial. It was outrageously tempting, but I knew I needed a moment away from her intoxicating presence to clear my head. “I’m not sure that’s a good idea. I’ll see you tomorrow. Night, sis.” With that, I fled–slipping out from under the sheets before hurrying to the bathroom to clean myself up. I didn’t look back, and my sister’s soft laughter followed me back to my room.
Chapter 4: Movie
The next morning passed mostly in a blur. Since it was the first day of the holidays and there was nothing I had to do, I’d ended up staying in bed for a lot longer than I normally would. Almost without exception, nearly every thought I’d had while lying there had been about my sister. Her boobs, in particular, had been at the forefront, unsurprisingly, but I also worried that my hasty departure last night might have sent the wrong message. The last thing I wanted to do was hurt her or make her think I wasn’t interested.
Because I’d come to the definitive answer that I didn’t give a flying fuck if Elayne was my sister.
She was right, we were just two, consenting adults, getting our rocks off. And there was nothing wrong with that. The taboo nature of being brother and sister only made the whole situation exponentially more erotic, which was a huge plus as far as I was concerned.
So, by the time I finally staggered out of bed shortly after noon–my dick already hard and excited–I didn’t hesitate to throw open the bathroom door without bothering to make sure it was empty first. Unfortunately, it was, which in retrospect wasn’t too much of a surprise given how late in the day it was. I even went so far as to poke my head into Elayne’s room, but she wasn’t there either.
Quickly cleaning myself up, I made my way downstairs to try and find my sister. The house was quiet in general, and as I entered the dining room–my stomach growling at me to eat something–I found my mom reading the newspaper.
“Ah, look who it is,” she said, looking up at me. “I’d say good morning, but I guess it’s good afternoon now.”
“Hey, isn’t that what vacation is for?” I asked defensively. “Besides, yesterday was quite the day.”
She looked at me a little perplexed, and it took me a moment to realize how badly I’d just messed up. “Really? I thought you just had a few token classes. Anything I should know about?”
Oh, nothing big, Mom. I just gave Elayne two, huge orgasms, one of which was while she was completely naked and pinned under me. Just the thought of saying it nearly caused me to burst into laughter, forcing me to turn and face the kitchen so she couldn’t see my face. “Oh. Uhh, I just meant cause it was the last day of my first college semester and all. It’s a big milestone, right?”
“You’re right, it is. Congratulations. There’s some leftover pancakes in the fridge or you can make yourself a sandwich.”
I had to bite my lip, hard, to continue to contain my laughter as I imagined her instead congratulating me for what I’d been thinking about. “Thanks. By the way, have you seen Elayne around?” I tried to sound as casual as possible while making my way over to the fridge, although I knew it was a little strange for me to ask given how we normally didn’t interact all that much.
“Hmm? Oh, she’s over at a friend’s house until around dinner. Said that since her brother was being a lazy slug there wasn’t much of a reason to hang out here. Were the two of you planning to do something?”
I bit back a curse. If only I’d gotten up earlier I could have been messing around with my sister right now. “Ah, we’d just talked about maybe starting up movie nights again. If she’ll be back by then it’s not a big deal.” Of course, we hadn’t, but after last night, I was more excited than ever to cuddle up next to my twin on the sofa. I imagined Elayne wouldn’t be opposed to the idea either.
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