The exact opposite of a mullet. Long hair in the front and short in the back. One might use the typical " Party in the front, and business in the back" Good for people who like to party and the wulletee's job entails their clientele to be more focused on the back of their head.
A womans mullet. Similar to that of a regular mullet, but more feminine. Sometimes styled and typically longer than just to the shoulders. Often seen as layered, and tapering as it goes down.
A progression of the nickname Wullie, often the nickname is a natural follow on from wullie to wullster in later years of ones life. Many nicknames find the "ster" tag added as we grow up.
As a boy we called him wullie but at some point around the drinking and shagging part of our lives it changed to wullster.