Meaning of the word "go in one ear and out the other" in English

What does "go in one ear and out the other" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

go in one ear and out the other

US /ɡoʊ ɪn wʌn ɪr ænd aʊt ðə ˈʌðər/
UK /ɡəʊ ɪn wʌn ɪə ænd aʊt ðɪ ˈʌðə/
"go in one ear and out the other" picture

Idiom

to be heard but immediately forgotten or disregarded

Example:
I told him to clean his room, but it just seemed to go in one ear and out the other.
No matter how many times I warn her, it just goes in one ear and out the other.