Top definition
A gay man that disappears from the face of the planet as soon as he gets a boyfriend only to reappear one that relationship ends or they are separated for an extended period of time. One love is back in their life they disappear once again.
Jonny is such a Brigadoon fag. He broke up with Joe and he was all like, 'lets go out guys and party'. Two weeks later he meets Frank and he disappears again.
by cancub June 09, 2005