(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.