That’s isn’t, doesn’t, wasn’t as I’ve heard them pronounced by people from Kansas, Arkansas, and Wyoming. The “s” is missing. Actually, they sound more like idden, dudden, and wudden now that I think about it.
Is this sort of pronunciation common to those states or to a larger region? Just curious.
You mean ain’t, don’t and weren’t" 
Yeah, I’m from Arkansas, and I talk like that if I don’t watch myself. I think it’s definitely something that’s not necessarily just a southern/midwestern/great plains accent, but perhaps just kind of American Informal, for lack of a better term. My WAG is that it’s rooted in the Scotch-Irish Appalachian thing that migrated westward, but I could easily be wrong about that.
We’s fixing, to get ready, to go to the house. It’s a fur piece down the road. You’ins stop by if’n you can.
I can vouch for the same version(s) in Alabama and Tennessee.
Also, “business” is either “bidness” or “binness.”
How many know about a Far Tar?
Shit, there should not be a ‘g’ on the end of fixin.
Yankee.
In New York we miss a few ‘s’ too. I-nt (ain’t works in a pinch), don’t (as in "no it don’t) and wa’-int. Funny, New Yorkers don’t have the time to enunciate all the letters but have plenty of time to insert extra syllables.
I learned talking in Alabama, and I say idn’t, dudn’t, wudn’t about half the time.
Since we’re on the Dope, and it’s a welcome place for being pedantic, Dictionary.com tells me that it’s the substitution of a stop consonant for a sibilant in anticipation of the ‘articulatory posture of the tongue for the ‘n’ sound.’ In other words, we’re lazy.
Shouldn’t that be fitsin’? Or is that a different region?
Do any people but native Chicagoans go ‘by’ somebody’s house when they visit them? As in, “I’m going by Mary’s”, or “I went by Mary’s yesterday.”
or “finna”
Sure, absolutely. I hear that out West (Oregon) all the time. Not exclusively, of course, but I use it myself, I hear other people use it, and it sounds normal enough to me.
I wonder if it’s one of those things like ‘soda’ and ‘pop’. It threw me off when I first heard it. I pictured him going past the house, but then talked about going home from there later. I was very confused for a bit.
I’m from Pennsylvania and while it wasn’t (wudn’t) the norm to talk that way, I’ve heard it a few times and probably done it a few times myself. Usually in very casual speech where I’m not making any particular effort to pronounce my words correctly.
Now that I live near Warshington, I don’t do it any more :D.
Well, both my parents came from NW Arkansas, then moved to Oregon. So I got the best of both worlds. 
What?
I once saw a sign for a furniture store that said “Goinging out of Busines Sale” in Alma, AR.
Regions should always be sure to have regular vowel movements, otherwise they get consonated.
Sign in the Detroit Bus Terminal (years ago) over the rack of books and magazines: “No Loitering! This is NOT a liberry!”
Fire tower.
Idn’t, dudn’t and wudn’t are common in Texas as well.