Younger step-brother (18+) has a hard on and needs help from his older step-sister. His step-sister is very awkward at first and doesn't want to be shown her younger step-brothers cock. He begs her to help him out because he doesn't know what to do, and it just won't go away... She finally gives in and starts slowly with a hand job but that isn't working. She puts it in her mouth next and she confesses that it's turning her on. He ends up cumming deep inside her, ending with a HUGE load. She has never seen her step-brother like that before but now she can't help but crave him.