I am partial to a number of Texasisms. In fact, being raised mostly in California and Connecticut, I thought these were all just family sayings. However, when we moved to Texas when I was in high school, I discovered our family was actually Texan. Some of the ones we use most are:
He’s lower than a snake’s belly.
He’s as yellow as mustard, but without the bite.
I’m cooking on a front burner today. (Alternatively: Now we’re cooking with gas.)
He’s slicker than owl shit.
It’s so foggy the birds are walking.
He’s as jumpy as spit on a hot skillet.
It’s so hot the hens are laying hard-boiled eggs.
They tried to hang him, but the rope broke.
He’s riding a gravy train with biscuit wheels.
They ate supper before they said grace.
I don’t care what you call me so long as you don’t call me late to supper.
He broke his arm patting himself on the back.
She’s so ugly she’d make a freight train take a dirt road.
He looks like the dogs have been keepin’ him under the porch.
If all her brains were dynamite, she couldn’t blow her nose.
He couldn’t pour piss out of a boot with a hole in the toe and directions on the heel.
The porch light’s on but no one’s home.
He’s missing a few buttons off his shirt.
It’s better than a poke in the eye with a sharp stick.
That’s close enough for government work.
Might as well. Can’t dance, never could sing, and it’s too wet to plow.
If dumb was dirt, he’d cover about an acre.
He’s so dumb that if you moved his plate five inches to the left he’d starve to death.
This ain’t his first rodeo.
If she were an inch taller she’d be round.
He’s like a blister—he doesn’t show up till the work’s all done.
I’m so broke, I can’t pay attention.
I ate so many armadillos when I was young I still roll up into a ball when I hear a dog bark.
We’ve howdyed but we ain’t shook.
There are a whole bunch more here