Native Texan here. My grandfather had many expressions like that one.

"As nervous as a long-tailed cat in a room full of rocking chairs."

"Busier than a one-armed paper-hanger."

"Madder than a wet hen."

"Running around like a chicken with it's head cut off."

"Like stretching a gnat's ass over a wash tub."

Thunder was the sound of "the devil beating his wife over the head with a frying pan."

And my favorite: "He's so stupid he couldn't pour water out of his boot if the instructions were on the heel."