Drool drips from the corners of her mouth as she struggles to take every inch of her Mistress's thick, veiny cock down her throat. Gagging and choking, she's rewarded with a firm hand spanking her red, stinging ass. The Mistress, her cunt aching with desire, forces her slave's head down, fucking her face mercilessly, leaving the submissive a sloppy, used mess, gasping for breath and begging for more.