Natasha Nice and her stepbrother Brad Sterling are bored as they hang out on the couch. Eventually, Natasha asks if Brad has heard of the Sis Challenge that's going around online. Brad hasn't, so Natasha explains that they both get naked and if Brad pops a boner then he loses and is a freak. Indeed, his dick is soft even at the sight of his sister's lush curves and massive titties. Natasha is a little bit shy, but she tells Brad that her pussy is wet. She urges Brad to shove it in as she gropes her own bountiful chest. Then she gets down on her knees to suck him off and give him a titty fuck. Brad sits down on the couch and lets his sister ride his hardon, but things are much more fun for both of them when Brad delivers a hard and fast doggy style pussy pounding. His sis is so hot that Brad can't help but blow his load inside her for a creampie that leaves her dripping cum.