We acne-prone people have two kinds of 'bad' appearance-related days: The notorious 'bad hair day' and then the 'bad skin day'.
Although the bad-hair day is common among the masses and pretty much a fact of life, the bad skin day is ours alone and only we understand what it truly means.
The bad-hair day, although annoying, doesn't have connotations of resignation. The bad-skin day, on the other hand, at least for me, just means worse-than-usual. I always have some sort of acne-action going on, but on these days everything is extra-inflamed, extra 3-D, and extra gross.