The man's thighs wobble and clench as he thrusts into his fist, the lycra leggings stretched taut against his ass. His cock, slick with pre-cum and oil, slams into his palm, the sound of flesh on flesh echoing in the air. The voyeur, now close enough to feel the heat radiating from the man's body, watches as he fucks himself harder, his breath ragged, his body tensing. The man's moans grow louder, drawing more attention, but he's lost in his own world, fucking himself until he cums, his load splattering onto the pavement, a testament to his public, phone-sex indulgence.