Source : Free On-Line Dictionary of Computing

insanely great
     
        ({Macintosh} community, from {Steve Jobs}; also {BSD Unix}
        people via {Bill Joy}) Something so incredibly {elegant} that
        it is imaginable only to someone possessing the most puissant
        of {hacker}-natures.
     
        [{Jargon File}]
     
        (1994-12-06)