Paraphilia is the modern day psychiatric term for sexual perversion. According to the Diagnostic and Statistical Manual of Mental Disorders, Paraphilias refer to intense, repetitive sexual urges, fantasies or behaviors where the sexual goal is an unusual situation, activity or object. Well that conveniently covers most kinks I would think. It is unclear what causes a paraphilia to develop. Psychoanalysts theorize that an individual with a paraphilia is repeating or reverting to a sexual habit that arose early in life.
Behaviourists suggest that paraphilias begin through a process of conditioning.
Nonsexual objects can become sexually arousing if they are repeatedly associated with pleasurable sexual activity. Well I am glad we got that out of the way. I still don't know why I like tying up women's clits. I always thought it was because I wasn't allowed to build a ship in a bottle when I was young. Maybe my parents worried that the bottle would become a sexual arousing object.