I will bust your ball until they swell up like balloons

In a dimly lit room, a dominant mistress takes control, her eyes gleaming with intensity. She straddles her submissive, her hands deftly circling his pendulum-like balls. With a wicked grin, she tightens her grip, massaging with expert fingers. The submissive’s breath hitches as his sac begins to swell under her relentless caress, growing taut and sensitive. Her hands never relent, manipulating and teasing until his testicles look like engorged balloons. The submissive squirms and moans, his arousal skyrocketing as every nerve ending in his groin ignites. The mistress revels in his discomfort, her touch both torturous and tantalizing, pushing him to his threshold of pleasure and pain.