v. phr. , informal To be not really listened to or understood; be paid no attention. The teacher's directions to the boy went in one ear and out the other. Mother scolded Martha, but it went in one ear and out the other.
GO IN ONE EAR AND OUT THE OTHER
Meaning of GO IN ONE EAR AND OUT THE OTHER in English
American idioms English vocabulary. Английский словарь американских идиом. 2012