“Now I’m varying the frequency,” she said, at last picking up the pace. She kept up her assault of his entire shaft, but faster and faster on every stroke. “Can you feel the difference?”
“Mm hm,” he said, without taking his mouth away from her breast.
“I’m feeling decent slickness now, Joshy,” she said. My hand was so wet from precum that it was starting to make squishy sounds as I idly pumped my meat.
He moved his mouth to her other nipple, tongue preceding the lips, and she moaned again with delight. Her verbal descriptions of the experiment fell by the wayside, replaced with sounds of enjoyment.
It’s not that I wanted to stare at my brother’s cock, but it was in my direct line of sight, after all. I noticed two things. First, his shaft was invisible when she passed across it, unlike when she first started and I could see it beneath her lips continuously. It was pretty clear that he was splitting her cleft more now, whether she intended it or not. Second, when his cock did make an appearance between strokes, it was shiny and wet.
He reached around behind her, putting his hands on the small of her back. I was reminded of the guy in the pool scene as I watched Josh’s biceps flexing with her, helping them sustain the pace. His lips fell away from her chest, and I was suddenly entranced by the sight of those breasts dangling between them, the nipples big and shiny after he’d worked them up a bit.
“I want to be inside you, Ash.” He moved one hand away from her back and toward their centers as though he was going to make this want a reality.
She was having none of it. “Josh, no. Don’t forget the experiment!” She grabbed his wrist and successfully returned it to her back, away from the action. She kept up her pace despite the outburst, both of them breathing quickly now.
“I don’t care about the experiment,” he said. “I need to be inside you.” Without moving his hands this time, he shifted his hips downward and on the next stroke she squealed and stopped dead in her tracks, pulling her midsection away from him. His body kept moving without her for a few strokes, his poor cock devoid of her stimulation.
“No, Josh, that’s unacceptable. Right now I need you to be the control.” After a pause, she continued, “And, to be in control. Can you do that?”
What else was he going to say? Between shallow breaths, he said, “Yeah, I can.”
“Promise?”
“Yeah, I promise.” No one ever made a less sincere promise.
“OK then.” She settled back down onto him, and he moaned deeply as she started to stroke him again. Just like before, their antics were only half of what was turning me on so intensely. The other half was the dead certainty that in just a few minutes, my sister’s snatch would be grinding on my cock just the way it was grinding on his right now. Almost never do you know exactly what’s coming next during sex, but this time I knew for sure, and I could barely stand it. I forced myself to peel my hand away from my rod even though it was contrary to the desire of every cell in my body. I had already shot one load that morning, but I didn’t want to get too close again too soon. My stiffness throbbed in my lap, trying patiently to wait his turn. Precum oozed out liberally, pooling on my belly, and I knew I would rate high in the experiment.
After a minute of eager movements by both of them, Josh said, “Ash, I’m getting close.”
I’m not sure what the woman normally does when the guy says that, but I’m pretty sure she doesn’t normally do what Ashley did then: Stand up and leave him there, slick and throbbing, without any further contact. “Ok,” she said. “That takes care of the control.”
“Ash, no, just another minute, please?” he begged.
But it had no effect. Ashley had already climbed off of him. “Maybe later, Joshy.” She scooped up her shirt from the floor again, knelt in front of me, and got to work on my cock. The first touch of that cool cotton on my shaft made me realize, if I hadn’t already, what was about to happen. “Mm, you’re so wet already, Alex.”
“Yeah, well, you guys are fun to watch,” I said.
She patted the fabric on me just as she had done with Josh, drying me off despite the steady stream of liquid I kept making. I watched that Y appear and disappear as she worked it around different parts of my shaft. After a few passes, she said, “One more thing to do this time.” She stood right in front of me and put her heel on the armrest of the couch, giving me an uninterrupted up-close view of her slit, opened up and just inches from me. “I’m too wet to start the experiment.” She proceeded to run the shirt along her lips, mopping herself just as she’d done for Josh and then me.
At the sight of this, Josh said, “No, let me.” He grabbed the shirt from her, and she allowed him to wield it on her petals to dry her off. His strategy was clever, though. He made one pass with the shirt, then a pass with his bare fingers.
“What are you doing?” she asked him.
“I have to check and see if you’re completely dry. For science.”
He alternated back and forth between shirt and fingers several times, the Y softly caressing her now as it had done for me and Josh. Not once but twice he elicited a squeak of satisfaction from her. I have no doubt that if she let him, he’d have had a finger deep inside her in no time. But she didn’t. She put her heel back on the floor and said, “OK, Josh, that’s good enough.”
The moment I was waiting for was arriving. She climbed on top of me, one knee on either side of my hips, and lowered herself onto my cock. The first touch of her warm skin against my sensitive shaft was absolutely divine. I moaned with pleasure. I could feel dampness already, no matter that we were supposedly both dried off with her shirt. “I feel your penis,” she said. “Do you feel my labia?”
I barely warbled out, “Yeah.”
She ripped my shirt over my head, finally leaving me naked from head to toe as the two of them had been for a while now. My chest was underdeveloped and pasty white, but you better believe this was the last thing on my mind at that moment. Never did I want to be naked more than right then.
“I’m starting with amplitude, just like I did with the control.” She slid her slit along my shaft, and I could not believe how much different it felt than just using my hand. Maybe she was picking up my precum-there was plenty, after all-or maybe she was making her own liquid. But after just a few strokes I could hear squishy sounds between us, and the smooth slickness made my cock feel like I’d never felt before.
I was only marginally aware of what else was happening in the room, but about this time I realized that Josh had gotten up and walked around to my end of the couch, facing the armrest. What caught my attention is when he climbed up and put his knees on the armrest. He gently put his hand behind Ashley’s head and pulled her over in his direction. Without any further movements, and without any words, she knew what he wanted, and she sucked the tip of his cock in her mouth. She kept gliding her slit along me, uninterrupted, but used the same back-and-forth motion to piston him with her other lips. Josh grunted deeply, and I couldn’t help moaning right along with him.
For a split second I envied Ashley for being able to please both of us so effectively at the same time, but then I lost my train of thought, because she started moving faster, just like she had with Josh. Her mouth was busy, so I got no narration, but I didn’t mind because by then I knew the drill.
The only thing that lulled me from this intense pleasure is when Josh tapped me on the shoulder. I looked up at him, slowly thrusting his meat in our sister’s mouth, wondering what he wanted. Without any sound, he pointed first at his nipple, then at her. I knew exactly what he meant. The angle was awkward, but I was able to duck down and get my lips around Ashley’s nipple. I can’t tell you how exciting it was when, in response, she squealed with glee despite her mouth being preoccupied. This squeal caused a thick stream of precum to ooze from me, enough to make me immediately notice the change in slickness between us.
In a day full of firsts, this was one more: my first taste of her nipple. The first thing that struck me was the fullness of her breast, heavy and pendulous at my lips. Her nipple was bigger than I expected, perfectly pliable under my tongue. I wanted this nipple in my mouth forever. As I played with it more, I felt it stiffen up, which I took as another sign that she was enjoying herself.
The stimulation was intense, and in too short a time I felt the unmistakable twinge that told me another orgasm would be hitting soon. The instinctual drive for sex means that twinge always feels spectacular, but this time it was tempered because I knew what had happened to Josh: As soon as he’d admitted he was close, she’d left him high and dry. But I couldn’t just spurt a load under her with no warning, right?
I didn’t have time to consider it for too long. I pulled my mouth away from her breast and said, “Ashley, I’m close.”
I was bracing myself for the sudden loss of her warmth and wetness, and sure enough, she did stop moving, but she didn’t immediately pull away from me as she had with my brother. Instead, she popped her mouth off his knob and said, “For the record, right now is the end of the experiment.”
Immediately thereafter, she moved towards me a little, flexed her hips towards me a little, and the next time she thrust downwards, I was buried deep inside her.
“My god, Ashley, I’m inside you-”
She stroked me slowly and deeply, prolonging my experience as long as she could. “How is it, Alex?”
“My god, I never knew what this could possibly be like. So good.” I was blathering, I know. “You’re my sister, but . . . I can’t imagine anyone else.”
Josh hopped off the armrest and instead leaned against it with his forearms. Ashley turned and exchanged a deep kiss with him, right in my direct line of sight. They both moaned deeply in unison. I watched their tongues explore each other, and I was ecstatic that both of them were here for my first time. It would never have happened unless they had both been here together. I needed them both.
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