all ears

all eyes and ears

Very attentive.

are your ears burning

Asked of somebody who was not present but was the topic of discussion.

beat someone round the ears

To beat (a person) with blows about the head.

believe one's ears

To believe that something which one hears is truly the case.

box someone's ears

To slap someone on the side of the head, usually as an informal punishment.

burn someone's ears

To cause blushing of someone's ears due to strong embarrassment.

donkey's ears

A long time, years and years.

dry behind the ears

Seasoned or experienced; mature, especially with respect to judgment.