In a sordid tale of sibling dominance, a step-sister transforms her bathroom into a BDSM parlor. She's the mistress, her brother the submissive, bound and gagged. She teases him, her pert nipples brushing against his face as she ties him to the pipe. Kneeling, she takes his cock deep into her throat, expertly working him, knowing they could be caught at any moment. She's in control, and he's loving every humiliating second.