Robert cupped his hand up under my balls and squeezed them softly. With his other hand he reached behind me and rubbed my butt. I started getting a fu...ny feeling and my breathing quickened. Moving his hand from my balls to my dick, he moved it back and forth on my dick. My heart was pounding as Robert stroked my dick. After a couple of minutes he said, this isn't working, let's try something else. He turned me around and said to bend over. I felt his hands on both sides of my butt. My legs. They got in to a conversation about some middle of nowhere town that he had lived in.I needed to use the bathroom and went back to our Master bathroom. When I had finished and was washing my hands, I saw Linda's panties on the floor next to the laundry basket. I picked them up to put them away and felt how wet they were as I touched them. I lifted them to my nose and could smell her wet horny juices on them. They were soaked. She must be very horny out in the livingroom and I had left her alone. Would you mind finishing up?"I shook my head. "No."Mom gave me an empty smile. "Good girl. Could you start some popcorn in an hour? We'll have a movie night." Uh sure?"Then she kissed my cheek and headed out. She came back just over an hour later looking a little disheveled but with a smile on her face. I asked if everything was okay and she smiled. "Of course it is Honey. Let me change and we can start the movie." She grabbed a handful of popcorn and then headed upstairs. As she left I. I looked and she climbed on top. She pulled my rock hard cock to her pussy lips and asked if she could control the speed. I said sure. She lowered herself a half and inch then stopped. The other two stopped their fun to watch as Lena was taking my cock. She lowered another quarter inch then squeezed her face together as she forced herself the rest of the way down my shaft. She looked at her sisters and said "I am no longer a virgin" I looked and was shocked. I had no clue she was a virgin but I.