I have one older sister. She is 19. We are pretty close. During the summer time we have the house to ourselves all of the time. One day we were hanging out at our pool. My sister was in a very hot bikini which just barely covered her nipples. I tried not to notice but I couldn't help it so finally I told her I was going to the bathroom and that I would be right back. But I was really going inside to jack off.
I passed by her room going inside and saw her used panties on the floor. I couldn't resist. I knew it was risky but I went into her room and took her panties to my room. I pulled down my bathing suit and put her panties on my cock. Then I smelt her panties which you could tell she was wearing before she put on her bikini. It still smelled like pussy so much and it was a little bit wet. I started stroking my cock just smelling her panties.
I was so interested in the panties that I didn't even notice that she had walked in on me. I looked up and she was standing there just staring. She asked me what I was doing. I didn't know what to say to that. I could tell she was horny. She sat down on the bed. She took off her top revealing her very nice breasts. Then she pulled down her bottoms and exposed her shaven pussy. I couldn't believe it, it was the real thing. She started to masturbate and I started to stroke some more. My eyes were locked on her pussy the whole time.
I finally came about five minutes later. It was the best orgasm that I have ever had. I shot five loads of cum all over my stomach. She came about a minute later and she screamed so loud and she even squirted all over my bed and ME.
We continued to do this almost every day that summer.