It seems to me that "slimy underbelly" is just another, less polite phrasing for "disgusting". True, misogyny is "The World's Oldest Prejudice" (Jack Holland, 2006- a recommended "intro") and not limited to Catholicism. However to accept it today with rationales that are lies hiding the virtually insatiable demand that women be "available" to and "usable" for men is disgusting. The fact that its is widely accepted by religions that proclaim that all persons are equal before God in spite of the rationale, can be termed: "the slimy underbelly".  If the sexual abuse of children and youth by trusted authorities, whether of UN Peacekeepers in Africa or by Roman Catholic clergy and their cover-up is a "slimy underbelly", so is the legitimization - by any religion - of and practice of exclusion, diminution and all other forms of abuse of women across the whole spectrum of abuse.