First of all, I love this site, especially stories involving panties.
Martha was the ex-girlfriend of my roommate. She lived about a mile from us. During a bad snow storm on year I walked to her house after a few days of being stranded. She is a petite blonde with a very nice ass.
Getting a phone call from her neighbor, she left for a few minutes to give them a hand. This gave me the chance I was waiting for. I went directly into her bedroom to her panty drawer. She had an assortment of silk panties all with lace. Not knowing how much time I had, I grabbed a white pair and stuck them in my pants.
After leaving, I couldn't wait to get home and jack off with them. I got home and stripped naked and layed on my bed. I ran the silk panties all over my 7 inch cock and balls. They felt so good.
I was getting worked up and dripping a little pre-cum which I licked from my fingers when the phone rang. It was Martha. Just as she started talking, I shot a huge load into her panties. It was her sexy voice that sent me over the edge. That was the best masterbation session I have ever had.