http://dictionary.reference.com/browse/bigfoot wrote:noun, plural big·feet, big·foots.
1. a prominent or influential person, especially a journalist or news analyst.
verb (used without object), verb (used with object)
2. to assert one's authority or influence (over): lobbyists bigfooting around the Senate; a reporter bigfooted by a senior correspondent.
New to me, obviously. Used to write of one politician upstaging another in New Hampshire.