Christy added sarcastically "I didn't get dressed up for nothing". She took my hand the rest of the way. She needed to use the restroom once we got to...my floor. I made sure it was clear and stood guard for her. Christy and I entered my room. She said before we get started, did I have any condoms....which I showed her the string of them in my sock drawer. Christy then stated it was just going to be sex and nothing more. I replied "that's what every guy wants to hear". She took off her clothes. .. at least for part of the night. The shelter had room for six or eight hikers to sleep inside. Molly and Josh had plenty of room to spread out when they went to bed.Sometime in the middle of the night, Josh woke up with the feeling he was pushed up against something. Half awake, he assumed he'd rolled over to the wall. Before he moved he realized whatever it was to his side, it was soft and warm, not hard and cold. Molly had snuggled up against him. Unconsciously, Molly pressed tighter. We brought a surprise! Kimi giggled as Holly reached over for her purse and found what she was looking for — it was a flexible, double-headed dildo, made of clear green gel, a little over a foot long. It had been a favorite of the two girls in the dorm after they had discovered each others wanton sexuality. Kimi and Holly arranged themselves on hands and knees, facing away from each other, their smooth, pert butts close together, their backs arched downward. Holly reached back and worked one. In matter on minutes i came in his hand and he too came on ass. Pulled up my boxers and slept hugging me.I got up in the morning he was still hugging me naked. He had a hard on, i pulled down my boxer and exposed my ass. I dont know what got into me, and started grinding in his cock. I saw him twitch a little and i went to pretend to sleep, he was up and noticed what i was trying to do. He then continued what i started, he was humping me. After some time he came and pulled up my boxers like.