My stepbrother's constant arousal leads to a steamy encounter with his stepsister

My stepbrother's constant arousal led to a steamy encounter with his stepsister. She rode him in cowgirl, revealing her big natural tits and round ass. He climaxed inside her, then on her mouth.

My stepbrother has always had a bit of a problem with his constant arousal. It's not like he's ever tried to hide it, but it's just one of those things that's kind of awkward to deal with. I mean, I don't want to be around him all the time when he's constantly hard. But, as luck would have it, my stepbrother's stepsister is just as beautiful as she is big. And when he catches her in the middle of the night, she's more than willing to help him out. She's not shy about showing off her big, natural tits and her big, juicy pussy. And when she's riding him, it's a sight to behold. With her big, fat ass bouncing up and down, it's enough to drive any man wild. And when he finally cums, it's right in her mouth. It's a close-up view of everything you could ever want in a big cock, big tits, and big ass threesome.