"Stay still, slut," growls the dominant voice, as the woman braces herself, her ass cheeks clenching in anticipation. The man behind her, his cock throbbing with desire, lines up and thrusts hard, filling her completely. She gasps, her fingers digging into the bedsheets as he begins to pound into her, his hips smacking against her ass, the sound of flesh on flesh echoing in the room. "Keep that ass steady," he commands, his breath ragged, as he fucks her relentlessly, his cock slamming into her, again and again, until they both collapse in a sweaty, panting mess.