I was 16 at the time, and I had been masturbating for a little while now. My cousin, who was 15, had started to develop her lady parts. My mother, bro, cousin, and I had decided to go on a little vacation into the mountains in a cabin. There was a hot tub outside and we all loved going into it.
One of the days while we were up there, I decided to poke around in Sarah's room. By her bed were the panties she had just changed out of, as everyone else was in the hot tub. My dick was instantly hard with the sight of seeing her little white panties sitting there. It looked like she had just stepped out of them.
I brought them up to my nose and took a wiff of that sweet scent I now know as pussy. I couldn't help but to start jacking it right there, especially with the thought of knowing that at any time she could walk in on me. I came furiously and have been fascinated by her ever since. I hope to one day go a little further with her, but that must wait.