Your step-sister is the ultimate brat. She takes your food, has no consideration for your time or feelings and she wants what she wants when she wants it. Today, your step-sister is acting extra bratty. You're watching tv and she sits down next to you and changes the channel, not caring that you were already watching something. So, when she gets up, you decide to take back the television and start playing a video game. When she gets back she is furious at first. But then, she comes up with an idea. Since you want to play video games so much, you can play. Both of you will play. And whoever loses a level first has to do whatever the other step-son tells them to do. You agree, and the two of you begin to game. ...and your step-sister loses. She tries to talk her way out of it, but then admits defeat. So, you get to make her do one thing. Whatever you want. And what you want is a blowjob. After some initial hesitation your step-sister gives in. She starts sucking your cock and can't help but moan while doing so. What can she say? Your step-sister likes sucking nice cocks. And your cock is pretty damn amazing. Soon, she is striking another bargain with you. She gets to touch herself is she takes off her dress, and you agree. Your step-sister continues sucking your dick, but now you want more. You want to be inside of her pussy. Your step-sister wants that too. But now, she gets to be on top, she gets to be in control. So, she gets on top of you and begins riding your cock. Going up and down on your dick. You then begin to give her commands. Slow down, speed up. Your usually defiant, bratty step-sister surprisingly obeys. Your cock is just that good. Soon, you're telling her that you're going to be on top. Your step-sister obeys you again. She waits for you to go back inside of her, but you tell her that she has to beg for it. She has to beg for your cock. And she does. All the bratiness has already been fucked out of her and now she's your submissive little plaything. After she begs enough, you give her what she wants. But, this won't be the last time you're going to make her beg. She has to beg you for it some more. She has to make you know just how desperately she needs your cock. How badly she wants you to cum inside of her. And when she is about to cum, she needs to beg you for permission before doing so.