Source : Free On-Line Dictionary of Computing

gang bang
     
        The use of large numbers of loosely coupled programmers in an
        attempt to wedge a great many features into a product in a
        short time.  Though there have been memorable gang bangs
        (e.g. that over-the-weekend assembler port mentioned in
        Steven Levy's "Hackers"), most are perpetrated by large
        companies trying to meet deadlines; the inevitable result is
        enormous buggy masses of code entirely lacking in
        {orthogonal}ity.  When market-driven managers make a list of
        all the features the competition has and assign one programmer
        to implement each, the probability of maintaining a coherent
        (or even functional) design goes infinitesimal.  See also
        {firefighting}, {Mongolian Hordes technique}, {Conway's Law}.
     
        [{Jargon File}]