A person who becomes a fan of everything on a social network, simply for the sake of becoming a fan. Even though they may have never done/seen/or eaten any of the things they are becoming fans of. One does this to be popular or "cooler".
Person 1: Did you see mikes page? Hes became a fan of pudding, just because his new girl friend is in love with pudding.
Person 2: Mike doesn't even like pudding man.
Person 1: I know.
Person 2: What a fansy...