The steamy gym showers of São Paulo hide more than sweat and soap. A curious sister sneaks a peek at her brother as he washes off, her eyes widening at the sight of his massive cock. She watches, transfixed, as he lathers up, his big dick throbbing in his hand. The temptation is too much for her to resist, and she steps into the shower, her body slick with desire. She drops to her knees, taking his cock into her mouth, eager to taste her brother's salty essence. He groans, thrusting into her warm, wet mouth, their bodies pressed together in the cramped shower stall.