"Phat" is both a idea and a thing. In its conceptual form, it is something that is very cool. In its manifestational form, it is a word which is used to describe that which is very cool. The word "phat" is most often found in the vocabulary of persons who are immersed in the hiphop culture, Drum n Bass or Jungle culture, or most anybody who wears Snug clothing because they understand it (not because it is trendy).