I drive my sub crazy stroking his oiled cock. I latch on to his testicles and squeeeeeze! A nice balance between pleasure and pain as I slide my hand up and down his cock bringing him to the edge. While simultaneously clamping down on his vulnerable, sensitive balls. Not once, not twice but 4 times I ruin his orgasm. Even when I decide to let him cum I grasp his balls hard denying him pleasure and continue to stroke his sensitive cock providing some excellent post orgasm .