I was annoyed when sis was late coming home - with the little amount of time we had to fuck before mom and dad get home from work. But she made sure to make it up to me, she dropped her school bag and immediately when down on me. We didn't have much time, but watching my sister ride my cock made me ompletely forget about the circumstances. I pull her body beneath me, and fuck her tight pussy until I feel myself about to burst. Serena gets on her knees like a good sister slut should and swallowed every drop of my cum!