HOLD YOUR TATER — Slow down, wait a minute. “Just hold your tater.” Tater meaning potato. Maybe little kids were given a roasted potato to stave off hunger until the meal was ready.
FLY MAD – Get angry suddenly. “I didn’t expect her to fly mad over that.” Maybe this expression is related to “madder than a wet hen.” A mad hen tends to fly around and flap her wings.
SPLITTING THE MUD – Running fast.
CUTTING A RUSTY — Getting angry and throwing a fit.