A sister's relentless prodding awakens forbidden desires in her unwitting brother. She begins innocently, asking about his day, but her eyes linger on his crotch, her voice dipping into sultry territory. He shifts uncomfortably, trying to hide his growing erection. She smirks, knowing she's got him. "You're thinking about me, aren't you?" she teases, tracing circles on his arm. His breath hitches as she leans in, her breasts pressing against him, her hand inching towards his throbbing manhood.