When my father remarried and I started living with my stepmother, I was introduced to my four step-sisters. From the moment we met, they looked at me as if they were judging me. They purposely showed me their panties and breasts, and I couldn't help but get a hard-on, and they enjoyed watching my reaction. My step-sisters, who didn't miss my erection, came over and grabbed my dick when the rest of the family wasn't looking.