Awaiting her stern mistress, the bound submissive squirms in anticipation. Her mistress enters, a towering figure with a raging hard-on. She grabs the eager girl's hair, forcing her to stare at the massive cock inches from her face. "You know what to do, slut," she growls. The girl nods, opening her mouth wide, inviting the thick shaft inside. Her mistress pushes in, roughly fucking her mouth, enjoying the sounds of her choking and gagging.