A term used to describe a male who usually identifies as straight or bisexual who is sexually aroused by pre-op transwomen. The scientific term for this–heaven help us–is gynandromorphophilia. Some people in the trans community use the term “tranny chaser” as a way of expressing disgust for the men who do this because rather than being attracted to the entire person, the men are mostly acting out a kink or a fetish. Others consider the term to be derogatory towards people who are transgender.