Go in one ear and out the other

Origin

The phrase's journey into the English lexicon begins with a simple, visceral metaphor: the human head as a hollow chamber. In the 16th century, writers like Sir Thomas More depicted advice or information as mere sounds entering one ear and exiting the other, signifying a complete lack of retention or heed. This anatomical image—a direct passage, no stopping, no processing—captured the frustration of those whose words fell on deaf ears. It quickly resonated because it perfectly mirrored the common experience of giving counsel only to watch it vanish, illustrating the effortless dismissal of wisdom with a vivid, unforgettable image that required no further explanation.