"It's the most ill-conceived pile of stupidity by the biggest bunch of cretins that I've ever seen in my life, " says Ross Wheeler, CEO of Albury.net.au, a regional ISP, referring to the web-filtering plan. "Every ISP that I know of has either publicly or privately said it's technically and practically impossible." The leak was further black icing on the cake. This is from an article in TIME and the article is about Australia government's web-filtering plan. I know "icing on the cake" means something good that is added to another good thing. Then does "black icing on the cake" mean something bad that is added to another bad thing?