My sister asked to go on a camping and hiking trip with me. At first, I had no intention of taking her with me --- she was totally inexperienced and would very likely be a total drag. I felt kind of sorry for her, I guess. I decided that it might be fun to have her along, though I knew that she would slow me down.

At first she decided that she would pack too much --- and I told her that make up and a few other items simply weren't going to be necessary. It was difficult to show her how to pack a back pack. I had no idea what a g irl should carry hiking. I didn't know what were the necessities and what were just add-ons. I told her to figure it out, to carry enough fresh clothing for two or three days, and maybe some personal articles, like soa p, deodorant, and whatever else she might feel like carrying on her back for three days.

We drove for about three hours, and it was late morning before we reached the part in the nearby hills where the best hiking trails were.

When we met up with all our hiking buddies, we found that another guy had brought his sister, too. Phil looked at Charlene, and I looked at his sister, Marie. Marie was kind of pretty, light brown hair and blue eyes. She looked to be about Charlene's age.

There were eighteen of us, and we designed an impromptu rally, a race. We paired off in groups of two. I had to go with Charlene, of course. I wouldn't trust anyone with her, and besides, they wouldn't want the burden of having an inexperienced hiker with them.

We set off, Charlene huffing and puffing behind me. I had to stop and reach out my arm to help her up some of the steeper inclines. She wasn't very strong, it seemed, and I knew that she was hot and tired after about a n hour of hiking.

I decided that we should stop and rest. Charlene protested, saying that she was fine. I knew that she wasn't, and I really respected her desire to keep moving. I told her that I was tired.

"I really need the rest, Sis," I said.

"OK, we can stop for a while, I suppose," she said.

We rested and drank some sport drink, and had a couple of pieces of beef jerky.

"Are there snakes in this area?" she suddenly asked.

Only in my pants, I started to say, then thought better of it. "Nah, Charlene, I've never seen one around here. Don't worry about it."

I looked over at her. Her face was red from the sun, and there were giant spots of moisture at her armpits. Poor girl, I thought. There was a little stream not too far ahead, I thought. We can stop there, where it opens out into a small little pool, and cool off.

We started off again, with Charlene in the lead this time.

Two hours later, we reached the stream. "Follow the stream, Sis," I said. "Stay to the left of it, and it will take us to a pool."

We were in rocky country now, and there was a slight danger of rattlesnakes, I knew, though this wasn't really the season for them. We made our way across the rocks, keeping the stream on our right. Soon, we could see that the stream fell over a small cliff. We went to the edge of the rock, intending to climb down and hit the bank of the pool.

We looked out over the pool, and found the guy and his sister there. It was Phil, and his sister, Marie. They were swimming around in the water, and just as I started to shout and wave, the girl stood up in the water.

She was naked. I felt a sudden stirring in my crotch. The girl was naked. Nice, round little tits were centered by light pink nipples. There was a light brown V at her crotch. Slender and pretty, she was a real look er.

Then, her brother stood, and he was naked, too, with a seven-inch long hard cock sticking out, pointing at his sister.

"Wow!" Charlene suddenly said. She lost her balance and fell down the slope, hitting the pool with a loud, water-spraying splash.

Phil looked over at Charlene, then up at me. He made no attempt to hide his naked body, and neither did Marie. He waded over to Charlene and helped her stand up.

I scrambled down the embankment. Marie and Phil stood there beside Charlene, who wasn't hurt at all. She was staring at Phil's cock.

"Uh," I said. "How's it going?"

"Just thought we'd cool off some," Phil said, seeming a little embarrassed. "You guys wanna join us?"

"Sure!" Charlene said, and started pulling her wet clothes off. She looked at me. "These clothes have to dry out, anyway, Bob."

She was right. I shimmied out of my back pack and pulled my shirt off. Charlene was already out of her clothes, and the sight of her round ass gave my cock an instant jerk. I could feel it begin to grow, and there was n't a lot I could do about it.

As I turned around to jump in the water, I noticed that Charlene was in the deep part of the little pool, and Phil was right beside her. Marie was some distance away, watching me as I stood there with my dick sticking u p in the air. Well, I thought.

I took a step into the water, and found that it wasn't cold at all. It was too heated by the rocks to be cold. I waded over to Marie.

"You guys like skinny dipping together?"

She smiled and nodded. "My brother and I are really close," she said.

I wondered just how close they were.

She was sitting in the water, and her tits were above the water line, erect and pointing at me. I was still in the water up to my thighs, and my dick was sticking up, pointing right at her face. She looked at it and sm iled.

"Nice," she said.

I swallowed, then sat. "Huh?" I looked at her erect nipples, and the firm, round tits the girl had. God, she was beautiful. My cock responded to the sight with a sudden jerk.

"Bigger than Phil," she said.

I didn't say anything, but I could feel my face get red.

"Phil!" she called. "Come over here for a second."

Phil turned and waded over to us, followed by Charlene. I looked at Charlene. Her tits were about the size of Marie's, but her nipples were darker, and stuck out further. Her pubic triangle was darker, but she didn't have as much hair. Her waist was slender. God, my sister was beautiful.

Phil came up. "Yeah?"

She reached out and touched the head of his hard prick. "Show him yours, Bob," she said, turning to me.

I stood, my hard cock standing straight up in air. Charlene gasped. "Wow," she said.

"Hey, nice cock!" said Phil with a smile.

"Duh," I said. "I guess."

"Your sister ever get you off?"

I shook my head, embarrassed.

He turned to Charlene. "Never? Didn't you ever want to, ever think about it?"

She nodded, red-faced.

"Well, maybe you need someone to show you how. Marie, show her!"

Marie reached over and wrapped her hand around the base of Phil's cock, stroking upwards on the hard shaft. "Like this," she said.

Then she slowly stroked downward, then up again. Then, with the other hand, she ran her fingers up his legs to his thighs, then his balls. She kneaded his balls as she stroked gently on the hard shaft.

"Try it," she said, pushing Phil away and turning him toward Charlene.

Charlene looked at me. I shrugged my shoulders.

She reached out and, with one shaking hand, touched the head of the turgid shaft tentatively, her eyes wide. She pressed one finger against the head of it, then moved the finger downward on the shaft, all the way to his balls.

Without a word, Marie turned to me and pulled on me, pulling me toward her. I stood there, and she reached out and ran her finger from the base of my cock to the head.

Then, she just touched the head of it, and I knew she could feel the pre-cum oozing out of the tip of it. She smeared it across the head, sending thrills deep inside my groin. With the other hand, she cupped and massag ed my balls.

Then she wrapped her fingers around the base of my cock and stroked slowly upward, then back down again, squeezing. Charlene and Phil leaned very close and watched.

I nearly came with all the excitement of having watched Charlene and Marie touch Phil's cock, and looking at both of their pairs of tits. My cock was in turmoil. It seemed to grow more, and it throbbed uncontrollably, the head of it a bright purple.

Charlene went back to Phil's cock. His cock was fat and hairy, sticking straight out. Charlene grabbed it at the base and stroked upward on it, causing some precum to ooze out of the head of it.

Marie pulled me toward her with both hands, and I nearly lost my balance. I took one small step toward her, and she gripped my cock at the base, pulling it toward her mouth. Both Charlene and Phil leaned forward, watchi ng intently as Marie took my dick and wrapped her lips around the head of it. She moved her tongue around the head of it in a swirling motion, causing a thrill to rush into my belly.