It's a "Complex" world
A complex is a core pattern of emotions, memories, perceptions, and wishes in the personal unconscious organized around a common theme, such as power or status. Primarily a psychoanalytic term, it is found extensively in the works of Carl Jung and Sigmund Freud.
My best friend has a Height complex. This means that she identifies herself as extremely short. She refuses to date guys who are less than six feet tall, because she doesn't find short guys attractive. She thinks she's too short and loves the look of Victoria's Secret models. I always call her silly because many guys don't care if a girl is short and, in my experience, some even prefer it. I think most complexes are silly, but I find her's particularly silly because she's beautiful and needs not care about how short or tall she is.