"Oh ... uhm, that's not what I meant to say. You are very pretty. If you weren't my sister, I would..." You would what?" she said with a tease in her ...oice. She was in her bra and panties."Stop it Cici ... please?"She put on the red dress, pulling it down over her beautiful midriff. Her bra was showing. I pointed that out."So now, you want me to take off my bra in front of you. Are you some kind of a pervert big brother?"I looked away. "I think you are very pretty, but I have no right to tell. Bobby put his hand on the back of her head. Dad pulled back and then slammed forward driving Sue forward onto Bobbys rod. He felt himself touch the back of her mouth. He was delighted when she did not gag so the next time Dads cock slammed into her, Bobby pulled her head to him and every inch of his prick disappeared into her mouth and he felt his cockhead enter her tight throat. Sue sucked like she was trying to get a thick milkshake thru a straw. You could see her cheeks pull in as she did.. Susan had quickly overcome her jealousy of sharing him with her sister, and had come to enjoying watching the pair make love, together. The more experienced 'Thea had imparted some of her "wisdom" to Susan, on how to get Al even MORE excited, and in turn, doing HER better. They had been engrossed in their "studies" one evening, and had lost track of the time.Susan was on top of Al's naked body, and had his dick in her mouth, sucking him. They heard a voice from the hall. "If you gently knead. . wow i am getting so turned on i am just nodding and mouthing yea baby and licking my lips.. i wash off and he does the same.. then he says i sould get dressed and follow him to his place.. i agree i should just that and off we go with his huge dick bouncing up and down as he walks and him reaching over to grab my ass as he lets me go thru the door first.. we dress and i follow him to his place and as i follow him in he turns and pushes me up against the wall and pushes the door shut and has.