I lay on my stomach and removed my top. I would put it back on when Ben came back. He was gone for a while and I started to worry about him. I stood up to look for him and saw him swimming slowly back.
I lay back down and he sat near to me. For whatever reason I had forgotten that I was still topless but I was still on my front so I didn’t worry too much. Besides I gave them both a quick flash that morning.
We chatted for a while then feeling playful I rolled over onto my back giving Ben a clear view of my breasts. He stared for a while.
“You never seen a girl’s chest before?” I teased him.
“They’re… err… err…. very nice, sis,” he mumbled.
“Thanks. I think they’re a bit too small but…” I stopped, suddenly remembering that here I was talking to my brother about my tits.
“No. Well anyway I think they’re nice. I think,” he added.
“You think? What does that mean?” I laughed, pretending to be offended.
“Well I don’t know. I mean you’re my sister. I’m not supposed to talk about your…. your…. tits.”
“Well I’m still a girl. Sister or not. Tits are tits. Same as cocks are cocks.”
“I know but you know what I mean,” he said.
“I know.”
“Anyway I saw you jerk off today, in the tent. And yesterday,” I said.
“No I never….!” he moaned.
“You did. And this morning you played with Luke’s as well. I pretended to be asleep.”
I described to him what I saw and he had no choice but to admit it. He was very embarrassed. But I also noticed a bulge in his shorts.
“So what other camping traditions do you two have?” I was feeling bolder now. And a bit horny!
“Huh?” he sounded confused.
“Well you swim naked together and you jerk each other off. What else?”
“Nothing, honest,” he replied, looking guilty.
After a bit more persuasion and teasing he admitted that they suck each others cocks.
“OH MY GOD!!!!!!” I exclaimed, clapping my hands in delight.
He told me how they suck each other but never swallow. Apparently he cums over Luke’s face but Luke always pulls out and cums into his hands. So much information.
I looked at the big bulge in Ben’s shorts. This was obviously turning him on. Not just him either!
“Can I suck yours?” I asked, sheepishly.
“LUCY!! No! You’re my sister,” he protested.
“And Luke’s your brother. You let him.”
“It’s different.”
“How is it different?”
“You’re my sister. You’re a girl,” he tried to reason.
“And isn’t that good? A girl? Or do you prefer boys?”
“Lucy!”
I sat up and began to tease my nipples with my fingers, just in front of him.
“I’ll let you play with these. I promise,” I said in my most childish voice.
“Lucy! Stop!”
I slipped my hand into my bikini bottoms and began touching my clitoris. I looked at his bulging shorts.
“Oh go on. Just this once. And don’t let Luke find out. He’ll tell mum and dad,” Ben said.
He pulled his shorts down and his cock sprang free. I leaned forward and wrapped my hand around it. My brother’s cock! I couldn’t believe this was happening.
I leaned down and licked it. Then I wrapped my lips around it and lowered my head, taking him into my mouth. I sucked him and felt him quiver as he got closer to cumming.
After a short while he shot loads of cum into my mouth which I happily swallowed. Every last drop. I sat up and looked at his shocked face. Shocked and satisfied. I smiled.
“That was amazing,” he gushed.
“Thank you sweet brother. Glad you liked it,” I laughed.
I pulled my bottoms off and lay on my back, totally naked. He stared at my nudity before leaning forward to touch my breasts.
He sucked on my titties as I played with my clitoris. I shuddered to an orgasm as he worked my tits.
We lay for a while completely naked and thinking about what we had done. Then, still nude, we went for a swim. We were just coming out of the water when we saw Ed and Mary walking alongside the lake in our direction.
“Hey guys,” they shouted, as they saw our naked bodies.
“Hey,” I called, slightly embarrassed.
They walked on as Ben and I fell onto our towels laughing.
“What can they think? They know you’re my sister?” he laughed.
We dressed and soon after Luke came back, armed with loads of bottles of beer.
We had a meal of beans an veg and drank loads. The boys swam nude but I still kept my bikini on. Ben occasionally shot me slightly embarrassed looks but I always smiled at him to reassure him.
I was maybe a little embarrassed. He was my brother and I had sucked his cock! And he had sucked my small tits! And seen my shaved pussy! Very embarrassing. But since I knew that he and Luke got up to stuff I wasn’t quite as ashamed as I might have been.
I said goodnight to them as I went to bed. In the tent I took a deep breath and stripped completely naked and climbed into my sleeping bag. Shortly after my brothers came in, still nude and got in their sleeping bags.
Ben turned out the lantern and then it was totally dark. Pitch black. You could see nothing.
I waited a few minutes then I rolled over and pushed myself against Luke. My bare breasts pressed against the skin of his back and I placed my left arm over him and onto his stomach.
A moment or two on I slipped my left hand into his sleeping bag and felt for his cock. It was already semi hard! Obviously he liked my tits against his back….
I stroked him till he was fully erect then toyed with his cock head. I sensed him getting more excited. Then I pushed my bag off and moved so I could take his erect member in my mouth.
I sucked his cock as he played with my tits. All this in the dark and in total silence so Ben would have no idea. Perhaps.
Luke came fully into my mouth, his semen rushing down my throat. He continued to play with my tits but moved a bit so he could reach my cunt with his hand. He slid a finger into my moist vagina and I let out a slight moan as he masturbated me.
I tensed up and shook as I came. We lay back down together and fell asleep in each others arms, still naked.
I awoke on Thursday morning to see my brothers jacking each other off. I pulled down my sleeping bag to expose my breasts to them.
“Here you are boys. Something to look at as you cum!” I joked.
Luke sent me an embarrassed and worried look but I just smiled. They both stared at my tits until they both shot out cum over each other.
We dressed and had breakfast as we prepared for what was going to be a very long walk in extremely hot weather. Ben wore shorts. Luke opted for a very tight pair of swim trunks and I wore my purple bikini.