In 2015, the streets of São Paulo witnessed an explosive encounter between two anonymous men in a cramped office. One, a lean, hungry top, the other, a muscular bottom eager to satisfy. The scent of sweat and sex filled the air as they grinded against each other, pants discarded, cocks throbbing. The top, a self-proclaimed 'negao,' pounded the bottom relentlessly, the sound of their flesh slapping echoing through the small room.