Peter has received the new issue of Penthouse, he is really excited so he sneaks away to the bathroom to enjoy the magazine, once he gets to the centerfold, he cannot believe it, his stepsister Sloan is featuring it, so he decides to confront her, and storms into her bathroom, Sloan is shocked, to make sure their father will never find out she starts sucking Peter's dick, but get caught by their mom Cory, they are speechless, but Cory gets horny with Sloan's centerfold in Penthouse, so she decides to teach them how to do it, they both suck Peter's cock simultaneously, then they take turns to fuck Peter, in every position they know until he cums on both of them.