Horny and alone, the curious teen turns the shower on, hoping for a quick release. As the water heats up, he strokes his hard cock, his mind filled with naughty thoughts. Just as he's about to reach his peak, the bathroom door swings open, revealing his surprised sister. She gasps, taking in his naked form, his cock still in his hand. Embarrassed, he quickly tries to cover up, but she can't help but steal a glance before leaving, her cheeks flushed.