Blood started to flow into all the right places for me to start to tingle and get hard, as I thought about the picture of her in the black leather set that I wasn't supposed to even know about. 'Not now not now not now' I chanted to myself, willing the blood to dissipate and go anywhere other than the head of my needy cock. The fact that I didn't get to cum earlier was now really taking a toll on me, too. Not only did I have aching balls since right before dinner, my hand was now literally resting on the very body that I was jerking off to. I tried to adjust myself in my seat, but obviously had no way of doing that without disturbing my sister. My cock was still slowly getting harder, its intensity slowed down, which I was grateful for, but I could still feel my shorts slowly getting tighter. The episode ended and my sister released her hostage hold on my hand to stretch and give her thoughts on what might happen in the next episode.
I took this opportunity to stretch and discretely adjust myself. My cock now with room to grow suddenly thought it was 'go' time. It was like me moving opened the floodgates. I was now rock hard, and you could clearly see that through the fabric of my shorts and the way I was sitting with my legs spread. I quickly adjusted again and offered an idea, "Should we watch one more, or are we calling it a night?"
My mom and sister looked at each other, shrugged their shoulders and nodded, then looked back at me. "I guess one more is ok, it's still kind of early." said Mom.
"Great, but before we start, sis, do you mind getting me a blanket? It's gotten a bit cooler in here." I only asked Alice because she was half laying on me, and would have to get up if I was going to get my own blanket anyway. Plus this way, if I asked her to go get it, I had a much better chance of her not seeing my manhood hard enough to hammer a nail through a board, compared to if I was to stand up right now. Alice got up without hesitation and kept talking to Mom about the cliffhanger at the end of the episode we just finished. She threw me a blanket and I thought I saw her glance at my lap, just by where her pillow was resting. I was able to cover up my lap and get comfortable without anyone noticing anything, at least that's what I had hoped for.
Alice sat back down just as I was done getting comfortable. She put her pillow back in place, her head back where it was, and reached for my arm again. The episode was barely keeping my attention and with my sister's warm body directly in my right hand, it was very easy to get distracted.
Under my blanket, I was able to spread my legs fully apart and guide my cock down one of the legs of my shorts. From outside the blanket, you would never know anything, but under the blanket my left hand was keeping my cock in place, and I was slowly teasing myself by dragging my fingertips up and down my fabric covered shaft. I think Alice was also kind of bored with the show right now, as I felt her moving around under her blanket, and moving my hand to where it felt comfortable for her.
She either knew exactly what she was doing, or she was totally clueless. My cock growing harder, I slid down the leg of my shorts, fully exposing my cock under my blanket, and giving the head small delicate strokes with my left hand. I could feel my balls respond to my self touching. Part of me was turned on by doing this in private, but right in front of my sister and Mom. Another part of me was just enjoying the sensation of the smooth skin on my cock, as my sister laid almost right on me. I knew I needed to slow down, the episode would be ending soon, and I would still need to stand up and walk to my bedroom.
Out of the corner of my eye, I saw my sister shifting her legs under her blanket. It looked like she was spreading them apart, much like I was sitting. I felt her pull my hand into a better position across her midsection with her left hand. Her right hand I assumed was just lazily lying somewhere. That was until I noticed that her breathing felt like it was a steady rhythm that was slightly increased than she had been the whole time.
I moved my head slightly to look in the direction she was laying, just to see if I could get a better view of her blanket covered body without being detected. I swear I could see a very small part of the blanket raise and lower at a recognizable pace. My mind racing and already down the wrong path of thinking, imagined it was her right hand right between her legs, softly petting her clit in small circles. That's when I felt her take a deeper breath, and then another, and another.
Her hand movement was hidden from our Mom's line of sight based on seat position, my leg being bent and in the way, as well as the dim light in the room, and the dark material of my sister's blanket. But from where I was sitting, I could basically see all that I needed to, not to mention that my hand was literally on her body trapped under her own hand. She had to know I could feel her breathing change.
My mouth went dry, and I swallowed at the thought of it all happening like it was. I took a deep breath as the touching under my own blanket was starting to get to me. Just as I did, my sister let out a soft moan which she quickly hid with a fabricated yawn. Just then the episode ended, credits hit the screen, I quickly let go of my cock and covered it up under my blanket.
Alice let go of my hand under her blanket, and pulled both of her arms out from under it and stretched them above her head, putting them directly in my face. This wasn't a rare thing, she did this frequently when we cuddled, almost as if one last thing to annoy me before we went to bed for the night. However I noticed this time that she took her right hand, and had it over my mouth and nose, and left it there for more time than necessary. Her fingers were a bit slippery and smelled like pussy.
More to the point, they smelled like her pussy. I made no attempt to react to this in any way. Even though it smelled amazing and sweet and musky and it was making me look like a cartoon character when they smell something that they love and they get all dreamy and floaty. I heard Alice yawn for real this time, and then said, "OK, that's enough for me, time for bed." as she got off the couch, folded up her blanket and walked off to her room.
Mom was in pace with Alice, so I was able to pretend I was just moving slow, and not obviously trying to hide my erection from both of them as I stood up. My back was to them, we all said 'goodnight' to the room as both girls wandered in the direction of their respective rooms, and I folded my blanket. My cock calmed down enough to not be completely obvious while I walked to my room in the dim light of the house.
Finally in the privacy of my own room, I immediately made sure that the door to the bathroom was slid shut. I'm not making that same mistake again. If I could lock the door from inside my bedroom, I totally would have. That was something that we always 'meant to fix' that never actually got fixed from the time we moved into the house forever ago. I got settled in bed and found a random video to watch on my phone. I wanted to wait a while before taking care of much needed self maintenance, to make sure that everyone else was asleep. About 30 minutes later, I got a text message from Alice.
Alice: "Hey...are you still awake?"
Me: "Yes...everything ok?"
Alice: "Yeah, I was just thinking about earlier today."
Me: "What about earlier today? You know you can walk like 15 feet and just talk to me in person, right?"
Alice: "When I sent those pics to you by accident. And, yes, I know, but I like texting right now."
Me: "Yes, I remember....ok"
Alice: "Were you really that shocked to see me in lingerie? I mean, you've had a few serious relationships in the past, and I'm pretty sure it's not the first time you've seen a half naked girl in pictures before."
Me: "I think I was shocked because I didn't know that my innocent little sister had such confidence, and because I didn't realize it was you in the pics for the first few seconds."
Alice: "Why didn't you recognize it being me for the first few seconds? You're able to see my face in them."
Me: "This is embarrassing, but, because I was too distracted by how good the body in the pictures looked, and didn't look at the person's face until after."
Alice: "You were checking out your little sister's body?!?! Ew, gross, you pervert.......wait, did you like it, though? *hiding eyes emoji*"
Me: "Are you asking me if I like your body?"
Alice: "You're the one who said you were checking me out."
Me: "That's not exactly how it happened. Don't twist my words around."
Alice: "Sooo...answer the question then. Did..you..like it?"
Me: "I'm only talking about this because you brought it up. Yes, I did. I thought the girl had a great body, and her confidence made her even more attractive in the pictures."
