A person from up north, generally Chicago, who moves or lives in the south and constantly goes on and on about how great everything is in Chicago.
He is a Blackhawks fan even though he lives in Nashville, and has for thirty years. He is a real carpetfagger.
Someone who moves to a new place but goes on and on constantly about how great the place was they just moved from. This is typical of northerners who relocate to the south.
He always roots against the home team because he is a lost local and still thinks he lives in Chicago.