What does Bum Rocker mean?

Bum Rocker meaning in Urban Dictionary

A smelly kid in every person's Middle, Junior High, or High School who was simply always had oily locks, smelled from about a block away and ended up being always seen wearing a Metallica, Ozzy, Def Leppard, Pink Floyd, Led Zeppelin, Whitesnake, Poison, Deep Purple or other T-Shirt associated with want. Usually wearing it for starters few days straight at least.