One day in a Tulsa University gay and lesbian studies class two young queens were learning about the Berdache, not particularly paying attention to their incorrect pronunciation (Bur'Da'Chee). Being two lazy queens at that, they eventually began to refer to all transgendered individuals as Daches. Short, convenient and cute, without alerting ignorant others to the controversial nature of what they really meant.
Dache has been evolving ever since. It provides a badly needed alternative language in which to refer to not only the transgender phenomenon, but all aspects of physical queerness that set one apart as different from the get-go. In other words... we are able to move beyond a very moronic and limiting gender binary (you are either male or female, nothing else) in a way that both redefines gender AND queerness. Dache is tha bomb.