I was 20 and on a summer vacation at my friends place. At the same time his whole family went for a long weekend to the South and I was all alone in the house for three days.
My friend had a 24 yr old beautiful sexy sister.
As I was bored alone at home I started a tour of the house and landed in the room of my friends sister.
I saw her bed unmade, and on it I saw a satin black colour baby-doll, also near her bed was lying a black satin-lace g-string which she had discarded before leaving.
The thought of that g-string on her beautiful arse got me excited...
I was curious as I saw this and picked up her undies to smell them and smelt of her perfume. Then I realised that everytime she wore her undies she used her perfume on them, smelling this I was more aroused.
I quickly removed all my clothes and started rubbing her undies on my hard penis. I also put on her baby-doll as well as her undies and lay on her bed and started stroking myself.
Then I entered her shower with only her undies and wet myself. Oh! as I felt her wet undies, it was an out of this world experience, as if she was with me in the shower and my penis was in her sweet pussy...
I could not control myself and I unloaded myself in her wet panties !!!
Wow!!! it felt good !!!
The whole three days of her vacation was a lot of fun for me.
Whenever I think of that moment, I still have a hard-on !!!