A greenie bopper is a fan of green day, but only since the release of American Idiot. They are related to the teeny-bopper and greatly remeniscent of the greenie-teenie. Despised by true green day fans who unlike the greenie bopper have enjoyed green days music before the release of American Idoit when green day became complete sell outs. Coined by yours truly
"Billie Joe is so fit! omfg!"
"I fucking hate you you fucking greenie bopper fuck off and die"