What's wrong with that? Let me add a few from my daily vernacular:
I'm fartin' dust over here! - I'm thirsty and would like refill of my iced tea, please.
Y'all are worthless as hen shit on a pump handle. - You people are not very helpful at all.
Its hotter'n the hinges of Hades. - My, its warm out today.
Colder'n a witch's tit in a brass bra/well digger's ass in the Klondike/Minnesota milk cow's teat in January. - Golly, its chilly.
Windy enough to blow the hay outta a horse. - Gee whiz, its blustery!
Couldn't hit the broad side of a barn/ocean from the beach/lake from the bottom. - That fellow isn't very adept at marksmanship.
Great gobs of goose shit! - Wow!