Nice Panties

I was at my house alone, my parents went to the mall, and my sister had her friend at my house but they went to the pool, I was so hard looking at some porn in my computer but I wanted something more, then I started looking up to some stimulating stuff, then I found my sister's friend backpack, I looked inside it and I saw her used panties, I smelled it for 10 minutes, I was so hard that it was hurting, I laid down in my sister's bed and put the panties on my head and stroked slowly, then I used the panties to masturbate and when I come, the panties were all filled up with my sperm, it was so good holding that against my cock!

Of course I had to wash her panties, but I wish I could do this more often.