The female equivalent of a douche bag. A woman with an overinflated sense of self worth, usually accompanied by a deficiency of intelligence. May also be compounded by excessive negligence towards or ill treatment of others. A douche hag does not typically realize there are others close by of equal or indeed superior intelligence and culture. She often lacks a sense of irony, particularly in the sense that her negative comments about others could be apt descriptors of herself.
Bobby: "Ugh, does she think she is the first to discover NPR or continental philosophy? Who even thinks those things are cool?"
Tommy: "Yeah, she is a total douche hag."
Jason: "Doesn't she know that guys is more likely into dudes? She's such a stupid douchehag"
Todd: "That guy is hot, I like his jeans"
Dean: "What?!? You're a douchebag"