A person who you hate A LOT. Worse than calling them a douche bag. This person is majorly annoying and they have somehow pissed you off to the fullest extreme ever possible.
Kevin, my ex, is such a douche bitch! He seriously fucked my sister last weekend!
noun: a Tom Buchanan (The Great Gatsby)
a person who fits the definition of a Douch Bag and a Bitch
Tom Buchanan from "The Great Gatsby" is a douche bitch