Many women do more than that when they're alone with themselves. But the contrived rules do not allow them to relax with a partner. It is not without reason they say, that a smart woman has it in her head, a fool has it in her mouth. I even know men who categorically reject such liberties.
If the stepdaughter is already interested in these pictures and videos, then her pussy is ready to be used for its intended purpose. And the stepfather has more right to her than anyone else. He catches a glimpse of her getting a high from his cock, sucking vigorously and greedily. Twisting her around and putting her upright - the man drives the bolt all the way up to her balls. Such a stepdaughter in the house is a godsend. Let her work hard to strengthen the family.
Black girls sure have juicy lips, but their asses are much more attractive and well developed! It's just sex - a fairy tale to get two juicy assholes in the anus in one go! I wouldn't be able to tear myself away from these broads for 24 hours, except I'd fall down from sheer exhaustion!