Term used to describe a person/persons who intentionally uses material such as a song beat, quote or look which by pop culture standards is already attached to another person/persons/known Icon. This act is usually performed by someone trying to gain in popularity, and seriously lacking originality.
A prime example is when Vanilla Ice during his one hit wonder "Ice Ice Baby" blatently ripped off the song beat from the classic Queen song "Under Pressure"
A more common every day example is;
Ron: Rob totally stole my sig quote!
Jeremy: He's such a DJ Vanilla!