DubConqueror: I'd go with "Not Functioning Good" but I don't think that's proper English. Should be NFW (Not Functioning Well), shouldn't it?
Anyways, I'd rather have Galaxy NFAA (Not Functioning At All).
I'd say that depends on the concept being shared, or maybe I should say the mood of the context. For example, that might be a form of "not functionally good", implying there might be some other good about it (rather than some other good thing about it). The phrase "it's not functioning good" is perfectly normal American English, much like the
Perfectly Normal Beast.
OTOH, if I'm concerned about fitting in with a certain crowd, then I find the best way is to listen to how those specific people around me speak/write. Though, that won't always be how they want to hear others speak, and it might even depend on the moment. It seems to me there are always many connotations for a word, and that words can only suggest concepts rather than ever dictate them.
I think language is flexible, or else it wouldn't have been what has been and wouldn't be what it will be. I mean, grammar for a language is simply a set of observations of what has happened, grammar isn't what a language should be. Imagination is too wild to have its expression bounded by so few observations recorded in the name of grammar, especially as those observations would be shared without original context (and without opportunity to question the source rather than the observer).
And I'm favoring "Never Fantastically Great" in regards to Galaxy.