In 'Culo,' Casperluna's lens captures the raw, unadulterated passion of two anonymous gay lovers, their bodies intertwined in a dance of primal desire. The camera lingers on the sweaty, naked flesh, zooming in on the taut, hairless ass that seems to be the focus of their intense, almost brutal lovemaking. The moans and grunts fill the air as they rut like animals, their bodies slapping together in a rhythm as old as time itself.