In this adult role-play, I panic after losing my phone while visiting my best friend’s house. His sister watches with a grin, then lifts her skirt to reveal my phone hidden underneath—along with her panties. As I struggle to understand what she wants, her teasing grows bolder and bolder. I know getting turned on by my best friend’s adult sister is a terrible idea, but I cannot resist. Fully hard, I fall straight into her trap and finally cross the line.