The opposite of a PatternLanguage.
Things done wrong reinforce each other. You're in trouble and you're not quite sure how you got there.
JoelSpolsky mentions this in http://www.joelonsoftware.com/news/20030125.html , "A week of Murphy's Law gone wild".
Do we need examples? (DeathMarchValues would seem to fit) Horror stories? Tips on diagnosis and cure? (reading about the PatternLanguage seems like a good place to look).
Currently I see a world of BrokenWindows and PrettyAdventuresomeProgramming.