The bus lurches through the cityscape, its A/C barely keeping up with the summer heat. A lonely passenger in the rear seat, his face flushed and eyes darting, starts to stroke his cock under the cover of his jacket. The bus's vibrations add to his pleasure, and he begins to pant softly, his hand moving faster. He's careful not to make a sound, but his body language betrays him. A middle-aged woman sitting nearby gives him a disapproving look, but he's too far gone to care. He's close, so close, when the bus screeches to a halt, and the doors open, letting in a gust of hot air and a group of chattering passengers. He quickly tucks himself away, trying to look innocent as they file past him.