By their very nature, fetishes are challenging to study or learn about. They are a departure from the norm in an area of life that most people are already uneasy discussing. Few studies on fetishes exist and that leads to a lot of misunderstanding. For example, there aren't exactly "common" fetishes. "Unless you get pretty deep into the field, you're going to have this misconception that oh, people are into this or into that. It's much more complex than that," says Tiger Devore, clinical psychologist and certified sex therapist. In most cases, people's fetishes are highly specific and, therefore, a dozen people with leather fetishes might all have very different preferences. Here, we have Devore guide us through some things we should all know about fetishes.