In a dimly lit dungeon, a seasoned dominatrix, her body a canvas of leather and lace, commands her submissive. She wields an electrostim wand, its hum promising intense sensation. With each touch, sparks dance across her sub's skin, drawing gasps and pleas. She traces his chest, his inner thighs, his hardening cock, each touch a jolt of pleasure-pain. He writhes, begging for more, his body arching towards her. She obliges, her strokes growing bolder, the current stronger, until he's a quivering mess, teetering on the edge of release.