Evil and rude
, but with the additional connotation that the rudeness was due to malice rather than incompetence. Thus, for example: Microsoft
's Windows NT
is evil because it's a competent implementation of a bad design; it's rude because it's gratuitously incompatible with Unix
in places where compatibility would have been as easy and effective to do; but it's evil and rude because the incompatibilities are apparently there not to fix design bugs in Unix
but rather to lock hapless customers and developers into the Microsoft
Hackish evil and rude is close to the mainstream sense of "evil".