I had helped my mother-in-law with some yard work the other day. On my drive home I realized that I had forgotten my wallet in her shed. I remember taking it out before starting the work. I turned the car around and headed back. When I got there I figured I would just head out back and grab it. As I get to the backyard I see her on a lounge chair nude. I have never seen her naked before and didn't know how she would react if I suddenly surprised this way. She didn't notice me as I hadn't walked into the yet. I should have been a gentleman and walked away but decided to get a longer look at her as I didn't think I would ever see her this way again. She is 55 years old with a nice body, great breasts and a hairless pussy. I pulled my phone out and probably shouldn't have but took pictures.

I really needed my wallet and thought the best way was to go to her front door and ring the bell as this way she would most likely put something on and would never know I had seen her naked. I rang the bell but she must not have heard it because she never came to the door. I decided to got back around back and call to her to give her the chance to cover up. She heard me and told me she was out back. I walk in and she asked why I was back. I told her I forgot my wallet in the shed and proceeded to get it. She made no effort to cover up and I was staring at her nude body. She asked if I wanted anything before I left again and said she would get us both an iced tea which she did. She came back and sat sideways on the lounge chair with one foot on the ground the other on the chair which exposed her pussy more than it ever should have.

It was around 3:00pm and she suggested I stay for dinner. I told her I better get going. She told me if I stayed I would be able to stare at her pussy longer and told my eyes have been spending most of the time down there. I apologized and she told me she wanted me to stay for dinner and I agreed. She said we would first spend some time out here and came over to me and began pulling my shirt off. I asked what she was doing and she told me helping me off with my clothes so we could enjoy the sun together. I told her my wife wouldn't like me out here naked with her. She said she knows her daughter wouldn't like me seeing her naked and staring at her private parts either and said she wouldn't tell her if I just spent a little time with her now. She then began removing the rest of my clothes until I was naked.

She made the comment it was our first time seeing each other naked and said it was her turn to stare at me. I had an erection which always occurs anytime I see a hairless pussy. She was staring at my cock and it felt awkward especially when she said it looked so big and was getting her insides wet. I thought she was going to try something with me after she said that but she sort of really didn't. She asked if I would be uncomfortable if she masturbated. I wasn't expecting her to say that and told her to go right ahead and she did. Watching her do so was a huge turn on hearing her moan and move as she rubbed herself. I watched as she climaxed and saw squirts as she did so.

When she was done she tells me it was my turn. I was so turned on by what I had just seen instead of thinking I just began doing it. I was stroking myself and it wasn't long before I was cumming. Once I was done I began to realize what I had actually done. I could explain to my wife being naked with her mother and even seeing her masturbate even thought it would be very difficult but it would be impossible explaining I just masturbated for her without being found guilty. We spent another hour outside before it was finally tine for dinner and we went in and had a shower.

She suggested we quickly shower together which may have not been the best idea but we did. We began to shower and helped lather each other which involved touching and soon the touching was of each others private parts and became very sexual which led to full out fucking. I knew we had crossed the line but she was one hell of a fuck. We had dinner and when I was leaving she asked when I would be back to do some more yard work or at least a social visit.