A
poser is any
individual who:
a) attempts to be something he or she could never be
b) imitates
fiction to the point of
vain idolatry
or
c) seems "pretty fly for a white guy."
Under this broad definition, the vast
majority of people are posers, or
wannabes, or
Holden Caulfield's "
phonies." See the
Project Mayhem,
Vanilla Ice, or
King Missile for issues or examples related to poserdom.