You and your step sister Lilly have to not only share a room, but you must also share a bed. It is tight quarters for you two, so she wants to end any awkwardness immediately. Get out that dick and jack it for her. She figures that if you have empty balls, you will easily fall resting. You never have to be asked twice to jack off, so you get right to it. You ask her to show you her titties, and she agrees. Her small titties are nice and perky, though you cannot reach out to touch them. That would be weird. You are happy to see her turn around and show you her ass, but you still want more. What else could you want from Lilly? Keep stroking off, step brother. She asks if you are going to cum soon and she flips over to showcase her ass and pussy. As she wiggles in front of you, your hand moves faster and faster up and down your shaft until you finally shoot your jizz for your step sister.