My father remarried and my daughter from a previous marriage, Lara, is usually a very well behaved girl. One day, while my parents were away, Lara caught a cold. I thought I was giving her cold medicine, but I accidentally gave her the "super erection drug" that I had been secretly using!! Then something seemed strange... "My body is hot..." she said, breathing heavily, and came at me!! Could it be that the erection drug was working?! Dripping in sweat, she straddled my dick and shook her hips until she came over and over again!! Lara's rampage was unstoppable!