This slope was was only about 35° because we were limited in how hard we could pack the dirt. What I planned on doing was using the dirt that we remo...ed from the moat as the dirt we piled against the building.The walls of the building were very close to 31 feet high, so the outer edge of the sloping dirt would be about 43 feet from the base of the wall. That was where we would put the upper edge of the trench.Uh-oh, my idea was not going to work. My dream was much too grandiose! If we made the. Cindy hissed and made oval motions with her pelvis as I filled up her ass and fucked it harder and harder.In no time at all I was orgasming. "Ohhhhh, goddd Cindy, I'm cumming! I'm cumming in your ass!" Me too, unnngggg!" she panted, "I'm cumming too! Awww cum in my ass!" Cindy had two fingers in her twat as she supported herself on one arm. I went rigid and poked my cock deep into her pussy-like ass orifice. Then I was spurting squirt after squirt of sperm into my sister's guts; and she was. ” I said cheerfully, never thinking I was to speak those words.“Okay, good luck.” He said leaving the car, and going upstairs, where the repulsive apartments where. I quickly got out of the car, and climbed up, meeting him in front of one of the apartments. “Are you just going to leave me?” “Umm, yeah I have a life you know.” He barked at me, unlocking the door.“But I don’t know the way.”“So.” He discontinued leaving the door ajar.“I was hoping…” I paused; embarrassed I had to ask if I could. “Well it looks like she was. I’ll be there, and as naked as we are right now. You’ve started something now girl, first you then you and me. Maybe by the end of the week all the girls will be wandering around in the buff.”“I doubt it and I wouldn’t want it. If the place is flooded with naked girls the boys won’t pay as much attention to us.”“Good point, but I would still like to see all the girls on this floor naked at the party, except for Amy and Patricia, they’re both nice girls jeez do they.