While my parents were out, my gal stepsister came home heartbroken after breaking up with her boyfriend. It was our first reunion in a while, but she started making fun of me as usual, saying, "You're still a virgin!? Get a job already! Gross!" Frustrated, I saw her lying in the living room with her pants off and her T-back completely exposed, and my virgin cock got fully erect! Unable to contain my horniness, my reason collapsed; I slid her panties aside and went straight for it! Ignoring my stepsister who was furious at my abnormal behavior, I exploded inside her pussy because it felt too good! Furthermore, my tireless cock refused to go soft, and I kept swinging my hips, creampieing her continuously! She resisted desperately, but the intensity of the fierce doggy pistoning made her feel too much, and despite her frustration, she kept cumming!