Hey, big step-brother, I really need to practice tying knots to get that next badge. Can you please let me practice on you? You're just looking at your phone anyway. Thanks! But as I start tying you up, you begin to suspect that I'm not so inept with rope as I led you to believe. In just a couple of minutes I have you completely immobilized. I ask you to struggle and, when I'm satisfied that you can't get loose, I put your phone out of your reach and start to undo your pants. Oh, you don't want me to play with your cock? Well, that's too bad, because I'm in charge now. I open your jeans and...

Hey, big step-brother, I really need to practice tying knots to get that next badge. Can you please let me practice on you? You're just looking at your phone anyway. Thanks! But as I start tying you up, you begin to suspect that I'm not so inept with rope as I led you to believe. In just a couple of minutes I have you completely immobilized. I ask you to struggle and, when I'm satisfied that you can't get loose, I put your phone out of your reach and start to undo your pants. Oh, you don't want me to play with your cock? Well, that's too bad, because I'm in charge now. I open your jeans and decide to do one more tie--on your cock and balls. I turn out to be a downright little dominatrix. I bind your dick and start to play with it, threatening to tell Step-Mom exactly how we play together as step-brother and step-sister if you don't go along with my plans. I'm so curious about your cock. Does it like to be oiled up and stroked? Does it like to be sucked and slapped against my big tits? Maybe it even likes to cum all over your little step-sister!