The guy is lucky with his sister - she is a nipple. She's ready to open her mouth for him to stick it in her. Apparently she serves him regularly, because he no longer feels affection for her, but fucks her like a street whore - rough and bold. However, she seems to like this treatment.
Finding a stud for your wife is a tricky and exhilarating task. Making a video of her is doubly enjoyable. And anyone will jump on such a bitch - and her body and breasts are gorgeous. Roasting your wife in front of your husband - cool! She's a little uncomfortable and it turns her on, like you're her first.
I'll let you in on a secret, but all filmed porn is usually staged