Cow-lying, a term used for the action of cows lying down before it rains. The cows know the rain is coming, some would say due to falling pressures, but the truth is the cows are psychic and lie down to protect their patch of grass, their terrotory. This is food that they keep dry to eat after the rain has stopped as they think wet grass is yucky. Many people know that when a cow is lying down, they are simply just tired, or rain is coming.
Brian: "Cows are lying down, must be knackered"
Brendra: "No, they're 'cow-lying' its going to rain.."