A person that goes against or is opposed to the social and political order of the day. Someone against the establishment.
After he studied his state representative's beliefs he decided to become an antiestablishmentarianist. My folksaren't happy that I am an antiestablishmentarianist.
Originating from the term 'afterhours.' The party that occurs after the bars close, usually circa 2:00am, usually involving technomusic, fist pumping, and shots.