The bus rumbles through the city, its passengers unaware of the lewd exchange happening in the back. A gay man, hungry and confident, spots a straight guy who catches his eye. He propositions him with cash, and the straight guy, after a moment's hesitation, agrees. He unzips his pants, and the gay man takes his cock out, expertly sucking him off, the straight guy trying to maintain composure as he's pleasured in public.