Τραντάζομαι στο κρεβάτι της ετεροθαλούς αδερφής μου

Today my parents went on a trip and the house was empty, just my stepsister's and I. She was walking around in her panties all day inside the house wanting to tease me. While she went to take a shower, I took the opportunity to masturbate very nicely thinking about that huge hot ass.