My father remarried and suddenly I got an older sister. She's beautiful with a perfect figure, but she walks around in just a tank top and panties every day... It was too stimulating for me at my age, and I immediately got hard... I couldn't resist her bouncy, unguarded peach of an ass, so I went to town on her from behind, pounding away and finishing inside! Even though I knew it was the lowest thing to do, it felt incredibly good. So while she was sleeping, I did it again from behind, finishing inside without even taking off my pants! I thought for sure she'd be mad, but then she said, 'I'm so horny I can't sleep...' She actually came onto me?! My dry older sister had an insane sex drive!!
