Jon was saying random things that kept me responding and distracted, not realizing where we were. I had been on the freeway for some time heading west... towards S.F. I wanted to know where I was taking him, so I asked where his house was. He told me we are not going to his house, but I was going to give him a ride. He then says we are going to the city. What the hell was he thinking, I am not going to the city. When I spoke up he placed his hand in my lap and grabbed my still semi hard cock. I. His basic human-sex training provided a rough idea of adult female anatomy and where babies came out from, but nothing prepared him for the idea of re-entry.“Just your fist to start with - here give me your hand”. After inspecting his short, clean fingernails and long thin fingers, she showed him how to bunch them together and pulling aside the panties, slide them into her pussy. Andy was amazed that his entire hand up to the wrist fitted so easily into her warm, wet depths.“OK Andy, now the. I could feel her pussy juices running down my cock as she came.I got her to stand up and bend over the table.As i looked down i could see that her juices had seeped out onto the chair that we had been sitting on.I told her this and she said,"Well what do you expect.You've turned me on big time.Making me horny as fuck.I always come hard when i'm being given a good fucking".At this i rubbed my pussy juice covered cock against her anus before grabbing her butt and thrusting it into her arse.She. She blushed and turned away. then after sometime I suggested that we take dip in the water. She too agreed and I went behind a bush and removed my dress and was in only my undies. my dick at that time was half erect but good enough to show a bulge. I saw my sis take a glance at it and she stood looking into the sea. When I asked her to join me she said” how will I come with this dress on?” I then gave her my white shirt to wear and she came out wearing the shirt on top of her bra and panties. I.