Originally, a fan or follower of the Philadelphia-based professional sports teams who refused to celebrate the two Stanley Cup championships won by the Philadelphia Flyers in 1974 and 1975 on the grounds that hockey should not be considered a "major" sport; today, a Philadelphia sports fan who is either unduly pessimistic about one or more of the local teams' immediate prospects, or one who strenuously disagrees with the policies, player-personnel decisions etc., made by said team or teams.
Many sports fans in Philadelphia regard the local sports-talk radio station, WIP, as nothing more than a vast sounding board for Negadelphians.
by Anthony Brancato August 18, 2005
The Urban Dictionary Mug
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