It also describes a
person who is just
openly and
willingly violating the
gender boundary by
combining a number of things that are
decidedly masculine and
feminine at the same time.
The classic example would be seeing someone walking down the street with a beard, unshaven legs, and long hair, while wearing a dress and high heels and carrying a purse.
It has to be clear it is not an accident, but quite intentional, and can really throw off people who are not prepared and/or used to it. And it doesn't really count when done for comedic purposes.