The road was quiet as always,the only sound a bird trilling in the tree outside the bedroom window.Assured after a good nights sleep that there was no...need to get up,I slumbered on.I had heard no sound.I had no warning.I became aware that the equilibrium of my little world was being changed.Lying on my right side my dulled senses noticed a movement behind me.A vague sense of the duvet being lifted caused me no alarm,even when I felt the bed tilt under me.Gradually becoming more aware I heard. We all sat to eat, and talk about the weekend. We said that we were going to poke around the base a bit, then probably explore a bit out in town. Linda asked Lisa if she would join us, and she gratefully accepted. It seems she had been there almost two weeks already, and was bored to death. She had not left the base since the bus dropped her off.So we headed into town, and had a great time. We looked in some stores, and Linda and I checked out some of the motels in town. We had already decided. I could see the tip of the cock was beginning to peek above the top of my shorts dripping with pre-cum. At this point I just did not care because it was throbbing so much. And feeling my mother work her hands around my legs and inner thigh area felt so crazy good. She turned to me and said, “It’s just way too hot.” She then pulled off her pj shirt and both her tits were now on full naked display. I could not say anything but just stare at them. She returned to rubber my legs. She rubbed. Inside they'd changed it from a loo, the unit had been swapped for a sturdy looking chair wide enough for just about two people to fit, and they'd cut gloryholes with small sliding shutters into both sides. In front of me is a guy, maybe a tad younger than me trousers and pants around his ankles a hardcore porn magazine in one hand, cock in the other jacking off. He's bent right over ass in the air facing me, he's looking through the gloryhole watching the guy getting sucked off, when i open.