You walk in and catch your sister IN THE ACT! She's got her legs spread and is taking the doggy's big knotted cock, moaning and showing off what a whore she is! You can't help but watch! She notices you but that doesn't stop her!! She seems to like having you in the audience ! She keeps fucking him, taking his big knotted dig, bragging about his big balls and how he's going to leave her dripping in cum! You keep watching closely as he fucks your sister in different positions until busting a huge load that leaks out of her as she laughs and smiles! She wants you to watch the doggy fuck you ever single night !!