Good shit. My apologies if that's a little long but here's a list of words I used to follow when roleplaying one:
ast - ask
bawl - boil
bleeve - believe
cyst - assist
dayum - damn
hep - help
idinit - isn't it
kumpny - company
supper - dinner
law - police
likker - whiskey
ovair - over
pharisin - very cold
plum - completely
saar - sour
whup - beat, strike
bard - borrow
munts - months
ignert - not smart
retard - stop working
tarred - exhausted
unnestand - understand
cudn't - couldn't
woulda - would have
coulda - could have
zat - is that
yo/yer - your
ya/yee - you
muchablige - thank you
we's - we are
you's - you are
wurd - word
sed - said
did - died
git - get
britches - pants
gosh dang/darn/dern it - god damn it
slap yur' granny - very good
gussied up - dresses nicely
a hankerin' for - craving for
honky-tonk - bar
kin - family
mash - press
tater - potato
reckon - guess, suppose
sugar - kiss
tore up - broken
uppity - snobby
yapper - mouth
younguns - young people
you'uns - each of you