In the sterile confines of a lab, a lonely man finds unexpected pleasure with a sonometer. The cold, clinical environment does little to dampen his desire as he experiments with sound waves, his body responding to the vibrations with a growing erection. He tentatively strokes his length, the cool metal of the sonometer contrasting with the heat of his skin. His breath hitches as he imagines the sounds of pleasure echoing in the empty lab, pushing him closer to the edge.