My sister, a nurse, worked 10 night shifts in a row! When she came home, she went crazy and forcibly inserted any dick in front of her, even if it was me, her brother! She turned into a wild sex beast! My sister, who is usually kind and serious, didn't care about me at all, pushed me down and dragged me around, losing herself in her intense piston-like movements! Even though I said, "Wait a minute!", she forcefully sucked on my dick! I couldn't stop her anymore. Until she was satisfied with her orgasms.