A douchebanger is a girl who repeatedly has sex or hooks up with complete douchebags. She may be slightly aware or completely in denial. She does it on a regular basis, and has not been well exposed to other types of men... normal guys who have manners, normal taste in clothing, and know how to treat a lady
"Wow she's such a douchebanger, I can't believe she's going home with that douche-sack." Girls who usually have low sel-esteem or think they know what is "cool" sleep withdouchebags. Therefore, she is a douchebanger.
Species indigenous to New York City nightlife. Usually, he is (always a he) unmarried with oodles of disposable income, which he spends on expensive bottles in order to attract golddiggers.