mare's fart

From mare + s + fart. A nickname stemming from the unpleasant smell of the plant's leaves. Primarily used by cattle farmers in North Shropshire and Cheshire.

• "See also: give a damn, give a tinker's damn, give a rat's arse, give a fig"
• "Your lamentation grieves me. See here, in the name of a mare’s fart! If my horse has fallen, why should I be blamed?"
• "Andrew Lark deliberately avoided looking down at Nona, for that might suggest to her that he cared as much as a trotting mare’s fart what he thought of her fears."
• "I had no place to go, no one within twenty leagues who gave a brood mare’s fart if I lived […]"