Last June my wife Becky and I vacationed at Devil's Lake in Wisconsin with some friends. We had a busy week of rock climbing, camping, boating and swimming planned. On the second night we were there, a severe thunderstorm warning came through and Stephanie, my wife's sister who had recently broken up with her boyfriend asked to sleep in our tent. We were tired from our day and so we agreed. Our tent after all, was a six man and there was only Becky and I.
We all got our sleeping bags rolled out and Becky and I lay down on one side of the tent and Stephanie laid down in her sleeping bag at the other side below our feet. Later that evening I was awaken by a distant thunder. I am a very light sleeper. Apparently Stephanie had heard the same thing, because she was awake and watching the sky out of the tent flap looking quite worried in her oversized T-shirt.
"Stephanie," I whispered, "What's wrong?"
She replied without looking at me, "Do you think the tent will keep the rain out?" she asked.
"Yeah, I suppose so," I said.
"Can I come lay by you guys?" she asked me.
I looked at Becky who was sleeping, she's always been a heavy sleeper. "I guess that would be ok, just try not to wake Becky."
She said okay, and crawled over next to me dragging her sleeping bag behind. She stretched it down alongside mine and laid down. She got inside and pressed her body up against mine. I smelt that she was wearing perfume and that along with her asscrack pressed against my leg was turning me on. It seemed like the harder I tried not to get turned on the hotter I got. After a while I tried to fall asleep, and I rolled my body facing my sister in law, and she pressed her ass right against my rock hard cock. I was so embarrassed. I began to turn away when Stephanie started rubbing her ass up and down my length through the two sleeping bags. I was worried about Becky waking up, but I decided just to pretend to be innocently sleeping.
Stephanie whispered that she was hot and sat up without looking at me and removed her T-shirt. She was not wearing a bra, and I just stared at her beautiful tits. They were large and the nipples were fully erect. She was a little chunky but her tits were not flabby at all. I never had noticed how nice her chest was before. She reached up to scratch one and then she noticed me staring, and she whispered, "You're still awake?" Then she smiled and teasingly tugged and twisted the nipple closest me.
She laid back down facing me now and asked me what I thought of her tits. I told her that I thought they were the most beautiful breasts I'd ever seen. She asked me if her sisters were as nice. I honestly told her no. Then she reached down into my partially zipped sleeping bag and pulled out my hand and placed it on her breast. She guided my fingers to squeeze her nipple. "How do they feel?" she asked me with a smile. I told her they were awesome and she removed her hand from mine but I continued to massage her breasts and nipples. Then she scooted up and I began to suck on her nipples. She whispered to me, "Bite them."
