Stealing my water was her first mistake, but the real sin was her fuck-me-now stare. I'm not her brother, not today. I'm her teacher, her lover, her punisher. She's my young, hot step-sister, and I'm going to fuck her like she's never been fucked before. Her tight teen pussy clenches around my thick cock as I slam into her, making her gasp and moan. She's a good student, taking my full length, her body writhing in pleasure. I fill her up, claiming her, marking her as my fuck toy. She's not just my step-sister anymore - she's my fucking property.