Bob's your uncle - everything is/will be perfect
Hitch in its getalong - broken, malfunctioning
Bless your heart (southern style) - can mean many things (mostly related to GFY) but NEVER means anything good and always said with a fake smile
Six ways to Sunday - every possible avenue of thought or effort has been made
Lagniappe (pronounced lawnyap) - a little something extra
It don't make me no nevermind - it doesn't matter to me
That dog don't hunt - it won't work
cattywampus - crooked
Gussied up - dressed up for church or a night out
gimme some sugar - hugs, air kisses, etc; used when greeting someone familiar to you
,,,as all get out - adds extra oomph to a phrase, ex: "I'm hungry as all get out" means "I'm VERY hungry"
So many more that I use; most are from my mother (Louisiana born, Houston raised) and my grandparents (from a ranch in the Hill Country of Texas)
I got that one from Dad but we use "Hitch in his giddyup" and usually referring to a person.
Our version of cattywampus is "kittywompus". We also say "kitty-corner" for the opposite corner of an intersection.
"A month of Sundays" - a long time past or future.
"A coon's age" - a long time in the past since something happened.
"More nervous than a long tailed cat in a room full of rocking chairs."
"Like a cat on a hot tin roof." - jumpy
"full of piss and vinegar." - gung ho about something; strong and willing.
"Colder than a witch's tit."
"Slicker than snot on a brass door knob." - Something that unexpectedly works really well.
"Slower than molasses in January." - really slow, usually a person.
"To hell in a handbasket." - Something that went irretrievably badly. I will sometimes refer to this when things are starting to go wrong by asking "Where are we going and why are we in this handbasket?"
"Other than that, how was the play, Mrs. Lincoln? - When everything that possibly could go wrong does.
"A fur piece." - A long way, usually in jest.
"The funny farm" - mental institution
"Bubble gum and bailing wire" - precariously cobbled together; a farmer's quick repair to just get the job done; something that has been repaired long past its usable life span.
"As useful as tits on a boar." - a person worthless for the job at hand or worthless altogether; incompetent