Source : Free On-Line Dictionary of Computing

penis war
     
         (Or "Dick Size War", "DSW") Any argument which
        has degenerated into quantitative boasting of the sort "My
        [program|bot|etc.] is [faster|meaner|etc.]  than yours!",
        generally as unconstructive (and with as little emphasis on
        empirical proof) as men debating who has the biggest penis.
     
        The term is often used on {IRC}, {news:alt.sysadmin.recovery},
        and sometimes applied to IRC {botwars}, because of their
        equally pointless nature.
     
        (1999-07-14)