眉に唾を塗る まゆにつばをぬる to keep one's wit about one; to be on one's guard; to be wary; to keep on one's toes exp v5r id Advanced ➥
眉に唾をつける まゆにつばをつける to keep one's wits about one; to be on one's guard; to be wary of trickery exp v1 id Advanced ➥