Friend's Sister's Bra

My friend's mom had left a message while we were in his room watching t.v. His mom had called to get him to pick her up at the metro train so he had to leave. I was gonna be alone at his house for about 30 minutes.

After my friend had left, I started to think about his sister. She is not extremely hot, but boy does she have big titties. I went to his bathroom about to beat my dick when an idea struck me. Many times before when I had caught a glimpse of her room, I had seen an occasional bra on he floor. I decided to go in her room and check it out. There, on the floor, was a huge white velvet bra that made my cock stand stiff. My fantasizing was amazing. I sniffed the bra and kissed it and rubbed the voluptuous cups up and down my rigid erect cock. I soon came everywhere, releasing my semen into the air and onto the left bra cup. I decided to leave the mess there for a pleasant surprise when she returned home...