I’ve got another one for y’all. Tell me what you think.
“Chafing at the bit.”
Is it wrong?
Nope. It refers to a nervous or impatient horse that chews on the bit by pushing it into its teeth. Apparently it's more frequently given as "champing at the bit," with the same meaning, but I don't think chafing is in any way inappropriate.
Oxford has it as "champ (or chafe) at the bit be restlessly impatient, especially to start doing something. Champ at the bit is used literally of a spirited horse that tugs at the bit in its mouth in its eagerness to move."
Chafing or champing can, in unfortunate circumstances, lead to the horse "taking the bit in its teeth," which renders the rider unable to control it.