To go in the right ear and out the left.
More Japanese Proverbs:
Children grow up, with or without parents.Japanese
A man in love mistakes a pimple for a dimple.
Japanese
A country can be conquered from the back of a horse but may not be ruled in the same manner.
Japanese
Even a one-inch insect has a half-inch soul.
Japanese
Fortunes exist among leftovers.
Japanese
Dumplings are better than flowers.
Japanese