This is how my first experience of a pussy happened.
I was 15 and had already had enough of being told that my sister was 'growing up' All it meant to me was the she was allowed to get away with anything she did and I was always in the crap for something that my sis had objected too.
Then, one day I was having a long soak in the tub and thinking about stuff. I was aware that sometimes mom would get cross with her for not changing her panties every day. I wondered why this was so important. So I got out of the tub and rummaged around in the laundry hamper. In there I found a pair of Lucy's school panties. Pale green cotton. Nothing special at all. I fingered them and moved them around. Only when I looked in the crotch did I see some white-ish stains there. I thought it was just sweat so I smelled it. I swear to god, my head spun and I nearly fainted. It was so good. Very sweaty, but also a flowery musky scent too. I smelled again and my cock was suddenly so hard. I knew what a girl's pussy looked like and I thought how Lucy's might look and that she had made this mess in her panties. I held them to my face the longest time while I rubbed my cock. Then I felt that something was gonna happen down there and instinctively, I put them over the end of my shaft as it pulsed and pulsed. When I looked again, I had filled Lucy's panties with my own mess. Then, as if a veil was lifted I thought that my cock had been right up against her pussy lips. For the next few months I found her panties a lot. Sometimes there was almost nothing there, other times they were still warm and moist.
Of course, one day I got caught. Lucy just walked into my room and caught me jacking into her panties. She was so angry and made me pay for it. She made me lie on the lawn while she peed on me. She thought I was being punished. In fact, I loved it. One day though, Lucy started grinding against me and I knew she cummed on me. That led to some fooling around together. She got a boyfriend last year and I know they fuck. Lucy still plays with me a little but not much.