Family Taboo

Back when I'd received my first Nintendo, Mom hadn't wanted it in the living room, so I got to have it conveniently tucked in the corner of my bedroom. I'd had to let Lexi play sometimes, but it wasn't that bad. Unlike some of my friends' siblings, my little sister was generally pretty respectful of my space, and only occasionally a bit of a brat.

My setup had evolved since the early days, of consoles and TVs. The size of my screen had expanded to the point where it was genuinely comfortable to play while sprawled out on my bed. The height of luxury, given the right mood. I didn't mind Lexi emulating me there either, lounging on my bed like it was her own while she played either with me or by herself. Even using my room while I wasn't there was fine. She'd remained a model room guest over the years, and there'd been no change to that as she reached her late teens.

What bothered me, rather frustratingly and counter-intuitively, was that Lexi had grown up.

It happened to everyone, I supposed. I'd grown into my body ahead of Lexi, being the elder sibling and all. It wasn't like I expected her not to follow suit, albeit in a somewhat more feminine way. It was just that there had never come a time when natural barriers got thrown up to protect us from one another.

I knew Lexi was aware that she'd grown up. I saw the way she changed around her friends, around boys, around Mom and Dad, even. She acted differently, talked differently, and dressed differently. And yet, somehow, she thought nothing of bouncing into my room on a Saturday morning in her sleep shirt and panties and flopping onto my bed while firing up whatever game had her attention at the moment.

Sleep outfits were often the worst offenders of all her outfits since they nearly always lacked proper bottoms. Skirts could be just as bad, though, or tight jeans or shorts, or tops that either hugged her too well or not well enough.

I honestly, truly tried my very best not to look at her that way. I made a very conscious effort. But despite my best efforts, there were only so many times I could wake up to her casual state of partial undress before I had to acknowledge that yes, in fact, my sister's butt looked pretty good, and was just as interesting to stare at as if she hadn't been my sister.

Following from there, naturally, was the forced acknowledgment that Lexi possessed all the other physical attributes an eighteen-year-old girl generally does, all the same, interesting-to-stare-at kind of bits. Bits I wished didn't look quite so good on my sister.

Lexi was cheerfully oblivious to my problems, which was infuriating at times. I could almost think that she was doing it on purpose, showing off her butt to me just for fun, but that wasn't like her. She'd never, to my knowledge, deliberately teased me with her body. I didn't think it even occurred to her that she could.

And so, once again, I woke up one Saturday morning to the shifting of my bed as Lexi got all comfy, lying down facing toward the tv and away from me. She was quiet about it, had muted the tv and everything, but she couldn't help disturbing the mattress as she lay down on her tummy. Not for the first time I wondered if there might have been subtle benefits to having a narrower bed if only so I wouldn't wake up to her butt in my face, and all associated problems...

I feigned sleep for a while. I didn't have to get up yet, and I didn't much want to either, partly because I had some inconvenient morning wood. Not because of Lexi, but just because.

Unfortunately for my attempts at being good, the way the two of us were lying, Lexi's butt was directly in my eye line if I opened my eyes. I could keep them closed, sure, but that was boring, and I kind of liked watching her play. She'd only recently discovered Breath of the Wild, and it turned out she loved it. There was a delightful innocence of sorts to watch her explore.

"Mom's making muffins," Lexi said. "They might be ready by now."

I stayed quiet for a moment, then, "How'd you know I was awake?"

"The way you breathe."

"You've been listening to my breathing?"

"Kinda. Kinda can feel it through the mattress too."

"Oh, you can not."

Lexi shrugged. "'K."

I sat up, leaving my covers strategically draped over my lap. "You just guessed, didn't you? You know I don't stay asleep long once you start playing."

"That's probably it." She took the opportunity of a brief lull to look over her shoulder and flash me an impish grin. "Not like I've known you for years and can tell these things."

"Not through super vibration senses. Or whatever."

"Doesn't take super senses. Just takes some basic awareness."

Lexi was back at her game, eyes glued to the screen once again. I let the argument drop. I didn't know if she was telling the truth or not. There was just enough believability in what she said to make it confusing. On the other hand, I couldn't remember her ever correctly calling me out on being awake without checking before. But on the other other hand, how many chances did I give her? Not many.

I was happy enough to be distracted from my mental circling by watching her play. Then a little less happy when I was further distracted by what she was wearing. Her top was riding up a bit, leaving a gap between it and her panties. Her lower back was uncovered. Not strictly arousing on its own, but rather by proximity and potential. And she did have such beautiful soft skin...

I reached over and tugged Lexi's top down. It only halfway covered her panties even after my adjustment, but it was better. She gave me a lopsided grin for my troubles.

"What was that for?"

"What was what?" I asked, electing to plead ignorance.

"You just pulled a 'Mom'."

"Nuh-uh."

"Yuh huh. She's always fiddling with my outfits too."

"That's not what I was doing. Your shirt was riding up. That's all."

"So you fiddled with it."

"I fixed it."

Lexi nodded sagely. "That's what Mom calls it too."

I frowned, but she didn't glance back again. I opted not to carry on arguing on the basis that I'd only get myself in trouble. Pointing out that I wasn't acting like Mom at all because Mom wouldn't have been fascinated by the small of Lexi's back seemed like a bad move.

Just to make things more difficult, Lexi shifted during a lull in the action and her top rode up again, more or less where it had been to start with. Whatever happened to the days when it was all baggy shirts at bedtime? When did these smaller, cuter tops start making such an appearance? Oversized t-shirts wouldn't ride up like that.

Aaannnd now I was thinking like Dad. Fantastic.

I should probably have just given up then. I could have just walked out, left Lexi to her game, and gone to check on those muffins she'd mentioned. That wasn't what I decided to do.

Instead, I tickled the bottom of Lexi's foot. She squealed and kicked at me. I tickled her other foot, resulting in more kicking and protesting.

"Cut it out!"

"I'm not doing anything."

"You're tickling me. Stop!"

I stopped. That wasn't what I wanted anyway. Instead, I place my hand square on the small of Lexi's back. There was only a small strip of skin between her camisole and panties, the rest of my palm lay with the fabric of her top between us. I didn't dare go for her butt.

Lexi didn't protest my hand placement. I hadn't been sure either way, though I expected at least a questioning look or something. She ignored me entirely, to all appearances.

I was being so very stupid. I knew it, but it was one of those things I just couldn't help, despite knowing better. That small, sneaky feel of my sister. That illicit touch. It was the tactile equivalent of all those times she'd made me stare at her butt. It got to me the same way, made me feel things that weren't at all proper for a brother.

"What ya doing now?" Lexi asked.

"Nothin'."

"Nothin'?"

"Yeah."

"Huh."

And still, she didn't tell me to move my hand, nor even glance over her shoulder at me. Just kept playing. Letting me leave my hand on her back. Though, I supposed, it wasn't objectionable yet. Since she couldn't see into my mind, all she knew was that I had a hand on her back. Odd, but not yet fully weird or worthy of argument.

It made me question myself though. Why I was doing any of this? Yes, Lexi had a nice butt. Yes, I'd been forced to acknowledge that thanks to her lack of awareness around me. Yes, she had lots of other interesting qualities too. And yes it felt nice just having my hand there, resting, drawing her warmth through my palm. And... and...

I shook my head, having rather lost my train of thought somewhere back there. I needed to snap out of it. It was early, that was all. Not thinking straight.