I woke up first today. I was still on top of Bob. He felt so good. His thing was hard, even though he was still sleeping. It was right between my legs pressing against me. Even after all we did last night feeling him there made me horny all over again. I wanted to just put him in me, but I was still sore.

I didn't want to wake Bob up because it was nice watching – and feeling – him. As sore as I was I couldn't help but rub against him. I don't know if that woke him, but his eyes opened and he smiled at me. I guess he liked it too. We talked a little and he asked if I regretted the night before. Silly man! If he only knew how long I wanted that.

I wanted to do something though, so I asked him if he had ever done a girl in the butt. A few times he's put his finger in there and I liked it and my friend told me she does it that way all the time. He said he had and he liked it. I was afraid he wouldn't. He said the girl liked it too, so I asked if we could try it.

He said sure, then asked if I really wanted to. I told him I liked his finger in there, so yeah. He started explaining that he was lots bigger than his finger, it might hurt, and stuff. I wish he'd stop worrying about me and just do it. I told him again I wanted to try.

He tossed the blanket off us and then reached for his pack and pulled out a first aid kit, why I had no idea. He opened it, took out a little tube and squirted it on his finger. The next thing I know he was pulling my butt cheeks apart and his finger touched my rear hole. When I asked him what he was doing, he explained he was lubing me up so he would go in easier. That made sense. Maybe him worrying about me isn't such a bad thing after all.

The lube stuff made me all slippery back there. It felt good to have him touching me, so I just relaxed. He rubbed outside for a while, then pushed his finger in. He was right. It just slipped in easily and wow did it feel good. My body must have liked it because my hips pushed up against his finger. He pushed all the way in and I tingled all over.

Bob had pulled his finger out of me – not what I wanted at all. I saw him squirt more of the lube stuff on his finger and then reach back for my butt. As soon as he touched back there I pushed back so he'd go back in me. It was so nasty, so perverted, so slutty, so deliciously naughty. I loved it. I never dreamed having my butt fingered could feel so good. I could already feel a climax coming.

His finger felt bigger this time, but that wasn't a bad thing at all. He seemed to stretch me more and it felt even better. Too soon his finger pulled out and then I felt what had to be his thing touch me. I didn't dare move. I wanted him to do it, but I was a little nervous and scared too. I just waited for him to go in.

He slowly pushed. He wasn't going in though and I wondered if he could fit or not. Maybe it was too small back there? A minute later I had my answer. He suddenly just popped in making me jump. It did hurt a little though, like I was being stretched open but not that much. It just surprised me. He felt huge, even bigger than he had in my front.

Bob must have heard me gasp or something because he stopped moving and asked if I was OK and if I wanted to stop. I just said, “Do me.” His hips moved and he pushed in deeper. It was almost like he was doing my front, but different somehow. He started slowly pumping. He didn't seem to be going in too deep, but I felt so full.

Pretty soon it didn't hurt at all, but I still felt full. I could feel my climax coming. As full as I was, I wanted more. He wasn't going in any deeper though. I guess it was because I was laying on his chest. I rose up a little and he seemed to go deeper. I thought if I sat up he'd really go in deep, so I did. He stopped moving and went in really far. I could feel him in my butt, in my front, all over!

I started moving up and down on him and he began moving again. It was like I was on a bucking bronco. When I pushed down, he pushed up, slamming into me and bouncing me. My body suddenly exploded. He just kept pumping and I felt another climax coming. My head was bumping the top of the tent, but I didn't care. I exploded again.

Suddenly I became a lot more slippery and I thought I could feel his thing kinda pulsing inside me. I was wondering what was happening when I realized he must be climaxing. His thing was shooting stuff inside me. That made me climax a third time.

Bob stopped moving and so did I. I leaned back and at the same time he brought his knees up and I ended up with a backrest. It was so comfortable sitting there with him still inside me. I looked at Bob and he was smiling. It made me smile too. I could have sat like that all day, but I could feel him shrinking. I knew he would fall out of me soon. “You happy?” he asked.

“Yes,” I giggled, “But you're falling out.” He frowned and said he was sorry, but there was nothing he could do about it. I knew he couldn't help it too, so I told him it was OK, but later I wanted to do stuff again. He laughed and told me I was just a horny girl, which made me laugh because I guess it was true.

As expected, he fell out of me. I tried to keep him in as long as I could, but he did fall out of me anyway. I was happy though, or at least not horny. I sat there for a few minutes just looking at him, but then I had to go to the bathroom... fast. I jumped up and ran around to the back of the tent and squatted. It must have been his cum coming out, which wasn't bad, but then I had a big fart.

“Feel better?” I looked up and Bob was laughing at me. I blushed and apologized, but he told me that would happen sometimes when I did it in my butt. As he put it, “It comes with the territory.” When I farted again it really made me blush, but he was starting the fire again so didn't hear I guess. He didn't say anything.

“I'm hungry,” I told him. He said he was making something to eat. “Can we stay naked again today?” I asked. He smiled and nodded. I never wanted the week to end.