BDSM ballbusting lesson from a dominant mistress

The scene opens with a dominant mistress standing in front of her submissive slave. She begins by instructing him on how to properly execute a ballbusting technique. The slave is kneeling on the floor, with his back turned towards the camera, while the mistress takes over his body. She starts by squeezing his balls with her hands, while at the same time, she is using her fingers to stimulate his cock. The slave moans in pleasure and pain as the mistress continues to torture him. She then moves on to use her foot to kick his balls, while at same time, continuing to pleasure him with her fingers. The slave can't take the pain and pleasure anymore and begs for mercy. The mistress then proceeds to use her feet to kick his cock, while continuing to stimulate his balls with both her hands and feet. The slave's body is writhing in pleasure and agony, as the mistress takes control and teaches him a lesson in BDSM domination.