My sister Emily and I had always been close. She was twenty-two, I was twenty-four. We grew up doing everything together — hiking, camping, exploring the mountains near our home. This year we decided to do a three-day backpacking trip deep into the national forest, just the two of us. Our parents thought it was a great idea for “sibling bonding.”
We hiked all day under the warm sun, laughing and talking about everything. By the time we found the perfect secluded spot by a small alpine lake, the sun was setting and we were both exhausted. We set up our small two-person tent, cooked a quick meal over the fire, and crawled into our sleeping bags as the mountain air turned cold.
The tent was tiny. Our sleeping bags were pushed right up against each other. I could hear Emily’s soft breathing in the darkness. The only light came from the faint glow of the dying campfire outside and the stars through the mesh roof.
I was tired, but I couldn’t sleep. Being this close to my sister in such a confined space felt strangely intimate. I tried to ignore the thoughts, but my body had other ideas. My cock started to harden as I listened to her breathing.
I must have dozed off eventually.
Some time later I woke up to an incredible sensation.
Something warm and wet was slowly moving up and down my cock.
At first I thought I was dreaming. Then I realized it was real. I froze, heart pounding.
Emily’s head was under my sleeping bag. Her soft lips were wrapped around the head of my cock, sucking gently while her tongue swirled around it. She was moving slowly, almost lovingly, as if she didn’t want to wake me.
I stayed perfectly still, pretending to be asleep, barely daring to breathe. The feeling was unreal — my own sister sucking my cock while we were alone in a tent in the middle of the mountains.
She took me deeper, her mouth hot and wet. A soft, quiet moan escaped her as she sucked me. One of her hands gently stroked the base while her lips worked the head. She was clearly enjoying it.
I didn’t know how long she had been doing it, but I was rock hard and throbbing. Every slow suck sent waves of pleasure through me. I had to fight not to thrust into her mouth.
After several minutes she pulled off with a soft pop and whispered very quietly, “I know you’re awake, big brother.”
I opened my eyes. In the faint light I could see her looking up at me from under the sleeping bag, lips glistening.
“Emily… what are you doing?” I whispered, voice hoarse.
She didn’t answer with words. Instead she lowered her head again and took me back into her mouth, sucking harder this time. Her eyes stayed locked on mine.
It was the hottest thing I had ever seen.
I groaned softly and put my hand on the back of her head, not pushing, just resting there. She moaned around my cock and took me even deeper, until I felt the back of her throat.
The tent was filled with the wet sounds of her sucking and our heavy breathing. Outside, the wind rustled through the pine trees and a distant owl hooted. The isolation made everything feel more intense.
Emily sucked me with increasing passion — long, slow strokes mixed with fast, hungry bobs of her head. Her hand pumped the base in perfect rhythm. She was clearly skilled, even though I had no idea where she learned it.
“I’ve wanted to do this for so long,” she whispered during a brief pause, stroking me with her hand. “Every time we went camping I thought about sneaking into your sleeping bag.”
She went back down, sucking me eagerly. I was getting close.
“Emily… I’m gonna cum,” I warned, voice strained.
She didn’t pull off. Instead she sucked harder, moaning encouragingly.
I exploded in her mouth with a low groan. She swallowed every drop, milking me until I was completely spent. Then she crawled up and kissed me deeply, letting me taste myself on her tongue.
We lay there for a while, hearts racing.
“That was insane,” I whispered.
She smiled in the dark. “We have two more nights out here, brother. And I’m not done sucking you yet.”
The rest of the night we barely slept. Emily woke me twice more with her mouth, sucking me slowly while I pretended to sleep at first, then openly fucking her face. By morning we were both exhausted and addicted.
The next two days and nights in the mountains turned into the most intense sexual experience of our lives. During the day we hiked and acted normal. At night in the tent, Emily became insatiable — sucking me while I “slept,” riding me quietly, letting me fuck her mouth until I filled her throat again and again.
By the time we hiked out, my sister had gone from innocent camping buddy to my secret cock-sucking lover.
And we both knew this wouldn’t be our last trip into the mountains together.
After that first incredible night in the tent, the entire dynamic between Emily and me had completely shifted.
The next morning we broke camp and continued our hike deeper into the mountains. During the day we acted completely normal — laughing, taking photos, swimming in a cold mountain lake. But every look she gave me was loaded. Every time she bent over to adjust her pack I remembered her lips wrapped around my cock the night before.
By the time we set up camp again that evening in a secluded meadow with a view of the peaks, the sexual tension was thick enough to cut with a knife.
We built a fire, cooked dinner, and talked about normal things. But as soon as we crawled into the tent and zipped it shut, Emily’s hand was immediately on my cock.
“Pretend you’re asleep again,” she whispered with a naughty smile.
I closed my eyes and tried to breathe normally. She slid down into my sleeping bag and took me into her warm mouth once more. This time she was even hungrier. She sucked me slowly and deeply, savoring every inch, moaning softly around my shaft.
I lasted longer this time, but not by much. When I came she swallowed everything and kept sucking gently until I was hard again.
Then she crawled on top of me.
“I want more tonight,” she whispered, guiding my cock to her entrance. “I want you inside me while you ‘sleep’.”
She sank down slowly, taking every inch until I was buried completely in her tight, wet pussy. She rode me with long, rolling movements, trying to stay quiet. The tent was filled with the soft sounds of her breathing and the wet noise of her riding me.
I “woke up” halfway through and grabbed her hips, thrusting up into her. Emily moaned louder and rode me harder. We fucked like that for a long time — slow and deep, then fast and desperate. She came twice before I filled her with my cum.
We fell asleep tangled together.
The third and final night was the most intense.
We had hiked to a high ridge with total privacy. After setting up the tent, Emily didn’t even wait for darkness. As soon as the sun went down she pushed me onto my back and sucked me while I lay in my sleeping bag. This time she was vocal, telling me how much she loved sucking her big brother’s cock in the middle of the wilderness.
Then she wanted something new.
She turned around and lowered her pussy onto my face while she sucked me in a sixty-nine. I ate her eagerly while she deepthroated me. The mountain air was cool on our skin, but we were burning up inside the tent.
When she was dripping wet she turned around and rode me reverse cowgirl, facing the open tent flap so she could look out at the stars while I fucked her.
“I can’t believe I’m fucking my brother in the mountains,” she moaned.
I sat up, wrapped my arms around her, and thrust up hard. She came loudly, not caring if anyone could hear. I followed right after, filling her again.
We spent the rest of the night taking turns — her waking me with her mouth, me waking her by sliding into her from behind. By the time the sun rose on the last morning we were exhausted, sore, and completely addicted to each other.
On the long hike out, Emily held my hand and smiled.
“This was the best camping trip ever,” she said. “Next time we go deeper into the mountains… and maybe we won’t bring separate sleeping bags.”
I squeezed her hand.
Our secret mountain trips had only just begun.
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