incest, even mock incest isn't really my thing, but I appreciate the variant in Max's movies where he ups the degradation factor by having his co-stars look into the camera has he defiles them, and say things like, "Look at me Daddy, aren't you proud of your little girl now!" Occasionally the young ladies intimate that they have received some sexual schooling from their fathers prior to the filming, ie "Look at me Daddy, this is how you taught me to do get _______.

I would suspect that not too many family relationships are tight enough to get over a tender moment like that being available on video in perpetuity. Such a scene would surely make a strong man weep and a weak one ....