He's masturbating in his loft, jerking it, trying desperately to cum when I find him. I stand on the ladder, spying for a minute. Poor step-brother, I bet he could use some assistance. "You should let me help." "No, you're my step-sister, get out!" It take a little convincing, but I know how to make him feel the best, and I want that ass for myself. I put on my strap on and make him suck it, then bend him over and go to town on him. We switch positions, and I pound my step-brother until he busts all over his stomach.