Caught off guard, I find my sister-in-law, a married woman, on her knees, eagerly engulfing my massive black cock. Her eyes water as she struggles to take it all, her makeup running, leaving her a mess. I let her set the pace, enjoying the sight of her stretching her mouth around my shaft. Once she's primed, I spin her around, lifting her skirt to reveal her naked ass. I tease her pussy first, making her squirm, before slowly pushing into her tight backdoor, claiming her fully, making her mine in the most taboo way.