The vile, the filthy, and the perverse

The vile, the filthy, and the perverse is a tripartite phrase used in the novel Everyone I Know is Mentally Ill to refer to actions, thoughts, attitudes, persons, and things that are considered impure or morally objectionable. Obsession with the vile, the filthy, and the perverse is indicative of cognitive disorder (especially misvertia).
==Origin of the phrase==
Azaku, one of the primary authors of the Registry, coined the phrase to describe the "socially disturbing thoughts of the lowly ones of society."
==Meaning==
The phrase has different meanings in different contexts, but the general meaning is that which is abominable.
===The vile===
The vile is the set of things that are disgusting to most persons, such as excerement and rodents. It also includes profanity and malicious speech.
===The filthy===
The filthy is the set of things that are considered unclean to consume or touch.
===The perverse===
The perverse is the set of all activities that corrupt what is typically right, such as sodomy (sex), malpractice (medicine), and belligerent and vexatious abuse of justice (law). It carries moral connotations. 
==Use in Terran psychiatry==
In Terran psychiatry, obsession with the vile, the filthy, and the perverse indicates severe non-psychotic mental disorder and must be treated to prevent grave harm to society.
Category:Everyone I Know is Mentally Ill topics
Category:Psychiatry