Idiom Magic﹕Stir one's stumps 行動起來、趕快做

【明報專訊】In this expression, "stumps" refers to one's legs. Stir means to be busy or active. If we put the words together we have this informal British expression meaning to become active, to hurry up, or to walk fast. "It's nearly Halloween (萬聖節前夕)! I've got to stir my stumps and prepare some new and frightening tricks," Agatha said.