Mistress' firm hand guides her submissive's head, pushing him down on her rock-hard cock. His eyes water as he fights to take her length, his throat constricting around her shaft. She groans, loving the feel of his struggle, her pussy pulsing with desire. 'Relax your throat, slut,' she commands, slapping his cheek. He tries, but she's too thick, too deep. She pulls him off, letting him gasp for air before pushing him back down, her hips bucking as she fucks his face, dominating him completely.