My younger sister is a good girl who wants to try her first dick and can’t wait. Since my parents control her life a lot, she can’t meet a guy, plus the few guys she knows won’t put up with her blowjobs because she’s ugly. I’m her older brother and I help her with her problem. I teach her how to suck my dick in exchange for her tiny tits so that she can gain some experience. Luckily, my huge cock is perfect for sucking, and when she makes noises with her saliva and my cock, it just makes me tremble.