This is from yourDictionary.com/library
Mullet the Mystery
John Algeo
Professor Emeritus of English
University of Georgia
The new uses of mullet are for (1) "a hairstyle with the hair cut short on the sides and in the front, but long and flowing down the back neck" and (2) "someone wearing his (usually its a male) hair in that style." The style is associated with trailer parks, six packs of beer, a package of unfiltered cigarettes tucked in the rolled-up sleeve of a T-shirt, country- western music, chicken-fried steak, pick-up trucks with deer rifles across the rear window, motorcycles, and NASCAR. Those who sport or have sported the mullet include Michael Bolton, Billy Ray Cyrus (singer of the memorable "Achy Breaky Heart"), Larry Fortensky (Liz Taylors husband number 9), Mel Gibson, Hulk Hogan, Brad Pitt, and David Spade, star of the recent movie Joe Dirt, in which the mullet "do" is a plot element.