我看着继兄勃起的阴茎，忍不住骑上去，直到他射在我体内。

The room is filled with tension as the sight of the Viagra pill ignites an electric pulse in his veins, causing his manhood to throb relentlessly. Unable to quell his aroused state, his body yearns for release. His stepsister, sensing the charged atmosphere, approaches with a mix of curiosity and desire. She kneels before him, her eyes locking onto his pulsating erection. With a playful yet hungry expression, she leans in, taking his throbbing cock into her warm, inviting mouth. She moves with skillful precision, her tongue swirling around the sensitive head, eliciting deep, guttural moans from him. Pulses of pleasure intensify, building towards an explosive climax. Finally, with a powerful thrust, he unleashes his pent-up sperm, feeling unparalleled ecstasy as she takes every last drop.