I teach and occasionally coach in Texas. I've heard the following odd but funny sayings from other coaches - football, whatever. Some are kinda amusing.
It's hotter than two rats in a wool sock.
He'll drop like a one-egg puddin'.
He ain't got enough heart to keep a sparrow alive.
If you're throwing up and taste something fuzzy, swallow it back down; it might be your asshole.
I'll run him until his butt bleeds buttermilk.
These coaches were mostly ex-Okies.
Any other gooduns?