In their dimly lit bedroom, the siblings indulge in their forbidden desire. She's sprawled on the bed, legs wide, inviting him in. He kneels between her thighs, his massive cock already leaking pre-cum. She guides him in, gasping as he stretches her tight pussy. He pounds into her, their bodies slapping together, his balls smacking against her ass. She claws at his back, begging for more, her pussy dripping with their combined juices. He pulls out, his cock glistening, and she leans in, licking it clean before taking him back into her mouth, eager for another taste.