Nah. I was just being a smartass.
Or smart ass, so as not to upset anyone (any one).
Seconded.
Well you’re not correct; not about me being a “she”, any way. 
Irrelevant. The OP insisted that there was no such word. And his obscure was a comment on those dictionaries which recognized it. The OED is not an obscure dictionary.
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Fair enough, although the OP could as easily have been using “obscure” to modify “entries.”
Regardless, you’re right. There most certainly is SUCH A FUCKING WORD as “nevermind.” It doesn’t mean the same thing as “never mind,” is all I’m sayin.
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Actually, American Heritage Dictionary hyphenates it: smart-ass. 
So is anyone going to float us a clue on the cryptic south/settlement thing?
Right! Because at some point it becomes tomorrow, eh?
Philosophically, they are two different concepts.
“Never mind” means, “I don’t wish to talk about this further.”
“Nevermind,” in the Nirvana sense, means, “I no longer think.”
Crude and dismissive, but you have the gist. Make it “I stopped caring long ago, in the least offensive manner that I can hope to convey” instead of “I no longer think” and we might have something. “Southern” strives endlessly to be inoffensive, no matter how stupid the statement responded to may be. 
This is the kind of arrogant pedantry up with which I will notput.
No it wasn’t , I said “obscure dictonary entries”. An entry in a mainstream dictionary can still be obscure.
To all the people bleating about how phrases get compounded into words all the time, so I should lighten up, this is totally different because it is an imperative phrase. Some smartarse is now probably going to come up with another imperative phrase that has in fact been compounded into one word, but fuckthem.
No, because sometimes it’s “everyday” as in “someone’s everyday routine” and sometimes it’s “every day” as in “We’re open every day.”
Or have I just been whooshed? 
Hey! You were supposed to end that with “beenwhooshed”.
We’re trying to start a trendhere.
Ah, no worries, it wasn’t a very funny whoosh. I’ll give it another shot someothertime.
Not exactly imperative (rather, an archaic use of subjunctive), but… “goodbye”
Sorryboutthat.
I prefer smart arse 
How do we feel about “sumbitch” for “sonuvabitch”?
Not that there’s any_thing wrong with that. 