"Yeah," I replied, just as quietly.

Dad coughed suddenly; Kyle and I fell silent. After a moment, his breathing returned to normal.

"Do you want to..." Kyle began, in a whisper so low I could hardly hear it.

"Shhh," I interrupted. Of course I did. I hadn't been able to think of anything else all day.

I both felt and heard my sleeping bag's zipper slowly descend. I hadn't heard Kyle's, and I realized that he must have left his undone in preparation (or hope) for what we were about to do. Clever boy.

His hand slowly snaked into my bag's opening. The sound it made when it brushed over the polyester surface seemed deafening, and I was certain that our parents could have heard it even over Dad's snoring.

I wondered what they would do if they caught us.

How could we explain it if they knew what was going on inside my sleeping bag? The thought of getting caught both terrified and excited me. But Dad kept snoring; Mom kept breathing heavily; Kyle kept navigating my body by touch alone.

He found my stomach first. His hands were warm and welcome, but I shivered all the same when he touched my soft skin.

Once oriented, I wondered where he would go next. Would he go up, towards my breasts? Or down, towards my pussy?

I wouldn't have minded either option, but the nervous part of me wanted him to hurry up and bury his fingers in my pussy so we don't miss our rare window of opportunity.

Up. He chose up. I really didn't mind.

His hand ran up my stomach and inside the loose t-shirt that I had worn to bed. I propped myself up slightly (more noise, worth the risk) to make sure he could freely access both of my tits.

He played with each in turn, leaving my nipples sensitive and erect. And then, finally, he went down. I smiled to myself. He would be very pleasantly surprised by what he found.

When Kyle reached my waist, I could tell that I was correct in that assessment. I heard him draw in a sharp breath through his nose and hold it for a moment, but he said nothing.

He had found that I wasn't wearing anything except for the shirt. I had removed my loose shorts and panties the moment I slid into the sleeping bag.

I had prepared, as well. Perhaps he thought I was clever, too.

He used the tip of his finger to lightly trace my pussy lips; the smooth line of my slit that led up to my clit.

It took everything I had in me to not moan out loud when he touched that part of me.

He started rubbing it in small, slow circles, causing me to bite my lip to keep from crying out.

I rested my hand on Kyle's, feeling the motion of his fingers as he touched me. After a moment of enjoying the sensation, I followed his arm into his own bag.

Once there, I felt around until I found his very erect cock, barely contained by the thin fabric boxer shorts that he wore. Apparently, I was a little bit more prepared than he was.

It only took a moment to free it, and then I held his heavy, thick shaft in my slender hand.

There wasn't very much time; we had no way to know if either of our parents would suddenly wake up and catch us in the act. I started slowly stroking his cock, moving from the base to the tip in a smooth, fluid motion. Occasionally, I would slide my thumb over his engorged head, feeling the beads of precum that I was drawing out of him.

And for me, Kyle was taking just as much care to pleasure me as I was him. He teased my clit until I could start to feel the first traces of orgasm building deep inside myself; until I started to buck my hips slightly to match his movements; until the smallest trace of a moan came very close to escaping my lips.

That's when he slid a finger inside me. Tiny fireworks exploded all around me.

I stroked him faster, trying to forestall my impending orgasm until I was sure that my beloved brother was satisfied. The sensations were nearly overwhelming- Kyle's warm, ragged breath; his finger sliding in and out of me; the feeling of his cock in my hand, heavy and thick.

It all blended together into one raw, erotic sensation.

Kyle came first, but not by much. I felt his cock swell and twitch, then his hot cum spilled over my palm and fingers. I kept stroking as his body silently shook with pleasure, right until my own climax took over.

My orgasm was sudden, prompted in part by Kyle's own. It flashed through my body, filling me with a flash of raw pleasure.

I instinctively pulled my hand way from his sleeping bag and clamped it over his own once again, keeping him close to me as the sensations built and crashed around me.

On some distant level, I knew that I was rubbing his fresh cum on my body- on my pussy lips and mound- but I really didn't care.