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You are here: Home / Incest sex stories / Science Project by amyss

Science Project by amyss

Adult story Editor August 24, 2024 Leave a Comment

“This is where I need some details, Alex. Are we talking about a squirt from the soap dispenser? Or . . .” He was struggling to come up with a suitable analogy, then spied my soda. “Or a squirt from the Coke dispenser?”

I couldn’t help a giggle, but then tried to think it through rationally. “I mean, it’s hard to say. It’s not like it comes out all at one time like one of those. It oozes out gradually, you know?”

He said, “Yeah, I get it. Then let’s do it this way. Suppose you’re turned on, but you still have your boxers on. Whatever you’re doing is enough to keep you nice and hard. Maybe you’re stroking yourself through your shorts, I don’t know. Anyway, after let’s say twenty minutes, how big of a wet spot would there be on your boxers?”

“Jesus, I have no idea. If I’m stroking myself, I don’t have my boxers on, and even if I did, I wouldn’t exactly be thinking about getting out a tape measure.”

Josh thought for a moment, then looked at me conspiratorially, with one eyebrow raised and a half smile. “You know,” he said, “there is a way we can figure this out. Scientifically, I mean.”

I didn’t like where this was going, but even so I said, “Oh? And how exactly do we do this?”

“It’s simple. I’ll just set a timer for twenty minutes, then we’ll measure. All we have to do is get you really turned on, but I think we can figure that out.” He pulled his phone out of his pocket and held it up to face me, though the screen was still dark. “What’s your favorite kink?”

“Josh,” I said, “I really don’t think I want-”

He interrupted. “Alex, this is for science. It’s a controlled experiment. You’ll learn something about yourself, and then you won’t have to wonder if you’re a freak of nature.”

“Listen, I’m not doing this with you. This is just too weird.”

“Don’t you watch some porn once in a while? Doesn’t it feel good when your dick stiffens up and you know what’s about to happen?”

“Yeah, I mean, sure, but not with my brother.”

“Dude, I’ll just be here for the science part. You just said that you aren’t in the mood to measure your wet spot when you’re horny. You can just focus on being horny and I’ll take care of everything else.”

“Tell you what, this is a great idea, I’ll do this when I’m at home by myself some day.”

He squinted at me. “Tell you what, I’m gonna watch some porn right now. You don’t have to watch if you don’t want.”

“God, this is so weird,” I said.

“It doesn’t have to be weird. Come on.” He got up, turned off the radio, and made the short trek from the kitchen to the living room, taking a seat on the left side of the couch. I reluctantly followed. He grabbed the remote and flicked on the TV, then swiped his phone to life and started scrolling. He turned back to look at me. “Over here, Alex, there’s plenty of room on the couch.”

The couch is a hand-me-down from our folks, so I’ve been sitting on it virtually my whole life. The back and armrests are fully padded, but the fabric is tired. You might think stains wouldn’t show on dark brown, but this couch would prove you wrong.

Anyway, I sat down on the other end of the couch and kept my eyes on him. I couldn’t tell what he was scrolling through on his phone, but I figured it out soon enough when a video popped up on the TV.

“We’re really doing this?” I asked.

“Don’t forget, it’s for science.”

On the screen was part of a swimming pool surrounded by immaculately kept shrubbery and trees so tall and thick I couldn’t see past them. The deck had a few chaise lounges and umbrellas. The gray cushions on the chaises matched the umbrellas exactly, and unlike our couch, no stains. It looked like the pool at a resort. No, strike that. I’ve never been to a resort. It looked like what I imagine a resort pool probably looks like.

A very attractive blond woman was lying on her back on one of the chaises, eyes closed, soaking up the sun in a skimpy white two-piece. It was almost impossible not to notice the striking contrast between the blinding white of her bikini and the bronze of her skin, glistening in the sun. The edge of her bikini top crossed each breast so deep into her cleavage that I couldn’t help ogling to see if any nipple was showing. None was.

There was some soft music coming from the TV too, but Josh turned the volume down so it was almost inaudible. He was still messing with his phone, but after a moment he turned to me. “So here’s how this will work. The timer on my phone is set for twenty minutes. Tell me as soon as you get hard, and I’ll start it. After that, do whatever you want. You can just sit there if you want, as long as you stay hard. You don’t have to take anything off or touch anything if you don’t want.”

I heard him, but I only saw him through my peripheral vision, because I couldn’t take my eyes off the woman on the screen, her chest lightly rising and falling with each breath. She uncrossed and recrossed her legs the other way. “Yeah, ok,” I said.

“The only thing is, you can’t cum until I say. The timer goes off, we do the science, then you can cum or not. Whatever you want.”

“Yeah, I got it.”

There was a splash on the TV, and the woman’s eyes opened. The splash happened in part of the pool that was off camera, so it wasn’t clear at first what caused it. Soon enough a guy in the pool entered the frame, swimming laps. He went in and out of the picture as he made his way back and forth across the pool. It was hard to see him because of the water splashing around, but the woman eyed him going to and fro.

Josh said, “Have you seen this one before?”

“No.”

“It’s a good one. I think you’ll like it.”

I wondered what about this video made Josh think I would like it, considering that we’d never so much as discussed porn before. But my brain pushed this aside when the guy stopped swimming and climbed up the steps out of the pool, dripping water all over the deck. Now we could see his black swimsuit, somewhat baggy, as he grabbed a towel and patted himself off. The guy was incredibly fit, a lean waist, nice pecs and shoulders. He ran the towel across each leg and showed off his beefy quads, either to the woman or the camera or both. The woman’s eyes were glued to him, but he didn’t even glance her way.

“Oh,” Josh said. “I just thought of something else we need to know. For science.”

“What’s that?” I asked, with some trepidation.

“We need to know how long it’s been since the last time you . . . you know, got your rocks off.”

“I really don’t see how that matters.”

The guy finished drying off and took the chaise lounge right next to the woman. The two chaises were butted right against each other, the cushions touching. A few beads of water remained on his skin, making bright dots in the direct sun. He lay on his back, still seemingly oblivious to her presence. She stayed on her back, but her head was turned so she could watch him continuously.

“No, it does matter. I bet you make more precum when it’s been a while since your last . . . time. Don’t you think?” He was talking to me, but his eyes, like mine, were riveted to the screen. “It’s another data point we need to record.”

I sighed. Any shred of privacy I intended to retain was rapidly disintegrating. “Well, let’s see. I guess it was Thursday morning. About two days.”

“Got it. Two days,” he said. “Isn’t morning sex the best?”

“Yeah, well, this was just myself. As usual.”

“Either way. It’s still the best in the morning.”

The camera switched to a new angle, and the screen was completely filled by the two chaises, his on the left and hers on the right. The guy had one arm up behind his head, which, I must say, showed off his abs nicely. He had a uniform tan across his arms and chest and not a hint of body hair.

The woman rolled onto one side facing him, supporting her head with her arm bent at the elbow. For a half second he turned his head toward her, but then he looked away again. Did they know each other? Or did they just happen to be using the pool at the same time? He was acting exactly like he would if he didn’t know her. Now that we had a side view of her, we could see that both pieces of her bikini were tied at the side, straps of fabric hanging down against her tanned skin.

“Should I start the timer yet?” Josh asked.

I couldn’t get over how odd it felt to discuss the state of my cock with my brother. There was definitely some engorgement happening, but so far the action wasn’t anything to get that excited about. Plus, sitting with my brother on this couch, the two of us fully clothed, didn’t contribute much to the eroticism. “No, not yet.”

“OK, don’t forget to let me know.”

The woman just lay on her side and bored her eyes into him, but he didn’t look her way at all after that one quick glance. His eyes were closed. The woman adjusted herself a little, scooting along her cushion to get closer to the guy. It was fun to watch her body jiggle as she moved. One of her boobs was pressed against the cushion now, and the strap holding her cups together completely lifted away from her body, just a fraction of an inch. Again I gave a close inspection of her cleavage. Her nipples were still concealed, but it couldn’t have been by much.

After a moment of just lying next to him, she surprised me. She leaned over and licked his chest, from the bottom of his pec to his nipple. The only contact between them was the tip of her tongue. He still didn’t open his eyes, but the tiniest hint of a smile crossed his face.

Josh chimed in again. “Can you imagine a chick doing that to you? Would you not be shocked as hell if some random woman introduced herself to you with just her tongue like that?”

I said, “If I was sitting next to that woman, there is no way my eyes would be closed.” Josh laughed out loud at that.

The camera tightened in on them. She grabbed his nipple in her mouth and gently squeezed it between her teeth. At last he opened his eyes, but he still didn’t seem to be paying any attention to her. Whether or not they knew each other, it seemed like if this woman grabbed his nipple in her mouth, he might show a tiny bit more reaction.

report She let go of his nipple and let her tongue roam more freely over his chest. At the same time, she pressed her body up against his side and put one of her legs on top of his. The bright white of her bikini was right up against his black trunks. Were we supposed to use the color of their suits to tell the good guys from the bad guys?

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