It has almost no moving parts and does not need fine machining. In fact, it would be much easier to make than one of our Sterling engines." If the pul...e jet is so good, why was it never used commercially back on Old Earth?" That's just it, the pulse jet is easy to build, but does not have the efficiency of the more complex engines. As far as I have been able to find out, it was never used in large numbers for anything but the German Buzz Bomb of World War 2. There, they were after the. I was thinking we would masterbate ourselves. That is all I thought would happen. Flo talked about the early years of her marriage with gramps and how they would hang with these swingers. Flo talked about watching gramps fuck other women and she would take other men. Flo mentioned that a couple of times there would be as many as six or eight couples. I could not believe what she was saying and my cock was so hard it hurt. Then without warning, Flo knelt down and took my cock in her mouth. She. Anyhow, Sis was walking around getting ready, and at first she was nude, then after her shower she was in her cute bra & panties set. At one point she came into the hall dancing as she went, and paused to groove to a particularly good part of the song, treating me to a show of her dancing in her hot, sexy undies. That about pushed me over the edge, and I started looking about for the box of tissues Mom keeps stocked up on my bedside table. Shit! The box was empty!Oh, not now… I thought. I was. But let's do a few lessons on birds, bees and flowers so they don't make babies." And Laura said, "Exactly. I don't care if they fuck all day, but I don't want Mimi to pop a kid at age 14."So we got the two of them together and explained how they could easily make babies and how they could avoid it. Mimi started having periods at age 14, and she opted to go on the pill. By that time, she had turned out to be a very pretty girl with a very shapely ass and beautiful tits, and long dirty blonde.